s3: Attempt to fix auth problems #5468

Revert "s3: remove WebIdentityRoleProvider to fix crash on auth #5255" This reverts commit e618ea83dd.
2025-12-24 04:04:37 +00:00 · 2021-08-11 11:47:24 +01:00
1113 changed files with 44179 additions and 73233 deletions
--- a/.github/ISSUE_TEMPLATE/Bug.md
+++ b/.github/ISSUE_TEMPLATE/Bug.md
@@ -9,7 +9,7 @@ We understand you are having a problem with rclone; we want to help you with tha

 **STOP and READ**
 **YOUR POST WILL BE REMOVED IF IT IS LOW QUALITY**:
-Please show the effort you've put into solving the problem and please be specific.
+Please show the effort you've put in to solving the problem and please be specific.
 People are volunteering their time to help! Low effort posts are not likely to get good answers!

 If you think you might have found a bug, try to replicate it with the latest beta (or stable).
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -22,7 +22,7 @@ Link issues and relevant forum posts here.

 #### Checklist

- [ ] I have read the [contribution guidelines](https://github.com/rclone/rclone/blob/master/CONTRIBUTING.md#submitting-a-new-feature-or-bug-fix).
+- [ ] I have read the [contribution guidelines](https://github.com/rclone/rclone/blob/master/CONTRIBUTING.md#submitting-a-pull-request).
 - [ ] I have added tests for all changes in this PR if appropriate.
 - [ ] I have added documentation for the changes if appropriate.
 - [ ] All commit messages are in [house style](https://github.com/rclone/rclone/blob/master/CONTRIBUTING.md#commit-messages).
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,23 +25,23 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        job_name: ['mac_amd64', 'mac_arm64']
+        job_name: ['linux', 'mac_amd64', 'mac_arm64', 'windows_amd64', 'windows_386', 'other_os', 'go1.13', 'go1.14', 'go1.15']

        include:
-          # - job_name: linux
-          #   os: ubuntu-latest
-          #   go: '1.17.x'
-          #   gotags: cmount
-          #   build_flags: '-include "^linux/"'
-          #   check: true
-          #   quicktest: true
-          #   racequicktest: true
-          #   librclonetest: true
-          #   deploy: true
+          - job_name: linux
+            os: ubuntu-latest
+            go: '1.16.x'
+            gotags: cmount
+            build_flags: '-include "^linux/"'
+            check: true
+            quicktest: true
+            racequicktest: true
+            librclonetest: true
+            deploy: true

          - job_name: mac_amd64
-            os: macos-11
-            go: '1.17.x'
+            os: macOS-latest
+            go: '1.16.x'
            gotags: 'cmount'
            build_flags: '-include "^darwin/amd64" -cgo'
            quicktest: true
@@ -49,51 +49,56 @@ jobs:
            deploy: true

          - job_name: mac_arm64
-            os: macos-11
-            go: '1.17.x'
+            os: macOS-latest
+            go: '1.16.x'
            gotags: 'cmount'
-            build_flags: '-include "^darwin/arm64" -cgo -macos-arch arm64 -cgo-cflags=-I/usr/local/include -cgo-ldflags=-L/usr/local/lib'
+            build_flags: '-include "^darwin/arm64" -cgo -macos-arch arm64 -macos-sdk macosx11.1 -cgo-cflags=-I/usr/local/include -cgo-ldflags=-L/usr/local/lib'
            deploy: true

-          # - job_name: windows_amd64
-          #   os: windows-latest
-          #   go: '1.17.x'
-          #   gotags: cmount
-          #   build_flags: '-include "^windows/amd64" -cgo'
-          #   build_args: '-buildmode exe'
-          #   quicktest: true
-          #   racequicktest: true
-          #   deploy: true
+          - job_name: windows_amd64
+            os: windows-latest
+            go: '1.16.x'
+            gotags: cmount
+            build_flags: '-include "^windows/amd64" -cgo'
+            build_args: '-buildmode exe'
+            quicktest: true
+            racequicktest: true
+            deploy: true

-          # - job_name: windows_386
-          #   os: windows-latest
-          #   go: '1.17.x'
-          #   gotags: cmount
-          #   goarch: '386'
-          #   cgo: '1'
-          #   build_flags: '-include "^windows/386" -cgo'
-          #   build_args: '-buildmode exe'
-          #   quicktest: true
-          #   deploy: true
+          - job_name: windows_386
+            os: windows-latest
+            go: '1.16.x'
+            gotags: cmount
+            goarch: '386'
+            cgo: '1'
+            build_flags: '-include "^windows/386" -cgo'
+            build_args: '-buildmode exe'
+            quicktest: true
+            deploy: true

-          # - job_name: other_os
-          #   os: ubuntu-latest
-          #   go: '1.17.x'
-          #   build_flags: '-exclude "^(windows/|darwin/|linux/)"'
-          #   compile_all: true
-          #   deploy: true
+          - job_name: other_os
+            os: ubuntu-latest
+            go: '1.16.x'
+            build_flags: '-exclude "^(windows/|darwin/|linux/)"'
+            compile_all: true
+            deploy: true

-          # - job_name: go1.15
-          #   os: ubuntu-latest
-          #   go: '1.15.x'
-          #   quicktest: true
-          #   racequicktest: true
+          - job_name: go1.13
+            os: ubuntu-latest
+            go: '1.13.x'
+            quicktest: true

-          # - job_name: go1.16
-          #   os: ubuntu-latest
-          #   go: '1.16.x'
-          #   quicktest: true
-          #   racequicktest: true
+          - job_name: go1.14
+            os: ubuntu-latest
+            go: '1.14.x'
+            quicktest: true
+            racequicktest: true
+
+          - job_name: go1.15
+            os: ubuntu-latest
+            go: '1.15.x'
+            quicktest: true
+            racequicktest: true

    name: ${{ matrix.job_name }}

@@ -134,7 +139,7 @@ jobs:
        run: |
          brew update
          brew install --cask macfuse
-        if: matrix.os == 'macos-11'
+        if: matrix.os == 'macOS-latest'

      - name: Install Libraries on Windows
        shell: powershell
@@ -197,6 +202,13 @@ jobs:
          librclone/python/test_rclone.py
        if: matrix.librclonetest

+      - name: Code quality test
+        shell: bash
+        run: |
+          make build_dep
+          make check
+        if: matrix.check
+
      - name: Compile all architectures test
        shell: bash
        run: |
@@ -216,126 +228,110 @@ jobs:
        # Deploy binaries if enabled in config && not a PR && not a fork
        if: matrix.deploy && github.head_ref == '' && github.repository == 'rclone/rclone'

-  lint:
-    if: ${{ github.repository == 'rclone/rclone' || github.event.inputs.manual }}
-    timeout-minutes: 30
-    name: "lint"
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Code quality test
-        uses: golangci/golangci-lint-action@v2
-        with:
-          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
-          version: latest
-
  android:
-    if: ${{ github.repository == 'rclone/rclone' || github.event.inputs.manual }}
-    timeout-minutes: 30
-    name: "android-all"
-    runs-on: ubuntu-latest
+     if: ${{ github.repository == 'rclone/rclone' || github.event.inputs.manual }}
+     timeout-minutes: 30
+     name: "android-all"
+     runs-on: ubuntu-latest
+     
+     steps:
+       - name: Checkout
+         uses: actions/checkout@v2
+         with:
+           fetch-depth: 0

-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
+       # Upgrade together with NDK version
+       - name: Set up Go 1.14
+         uses: actions/setup-go@v1
+         with:
+           go-version: 1.14

-      # Upgrade together with NDK version
-      - name: Set up Go 1.16
-        uses: actions/setup-go@v1
-        with:
-          go-version: 1.16
+       # Upgrade together with Go version. Using a GitHub-provided version saves around 2 minutes.
+       - name: Force NDK version
+         run: echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;21.4.7075529" | grep -v = || true

-      # Upgrade together with Go version. Using a GitHub-provided version saves around 2 minutes.
-      - name: Force NDK version
-        run: echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;22.1.7171670" | grep -v = || true
+       - name: Go module cache
+         uses: actions/cache@v2
+         with:
+           path: ~/go/pkg/mod
+           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+           restore-keys: |
+             ${{ runner.os }}-go-

-      - name: Go module cache
-        uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
+       - name: Set global environment variables
+         shell: bash
+         run: |
+           echo "VERSION=$(make version)" >> $GITHUB_ENV

-      - name: Set global environment variables
-        shell: bash
-        run: |
-          echo "VERSION=$(make version)" >> $GITHUB_ENV
+       - name: build native rclone
+         run: |
+           make

-      - name: build native rclone
-        run: |
-          make
+       - name: install gomobile
+         run: |
+           go get golang.org/x/mobile/cmd/gobind
+           go get golang.org/x/mobile/cmd/gomobile
+           env PATH=$PATH:~/go/bin gomobile init
+           
+       - name: arm-v7a gomobile build
+         run: env PATH=$PATH:~/go/bin gomobile bind -v -target=android/arm -javapkg=org.rclone -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} github.com/rclone/rclone/librclone/gomobile 
+           
+       - name: arm-v7a Set environment variables
+         shell: bash
+         run: |
+           echo "CC=$(echo $ANDROID_HOME/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi16-clang)" >> $GITHUB_ENV
+           echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
+           echo 'GOOS=android' >> $GITHUB_ENV
+           echo 'GOARCH=arm' >> $GITHUB_ENV
+           echo 'GOARM=7' >> $GITHUB_ENV
+           echo 'CGO_ENABLED=1' >> $GITHUB_ENV
+           echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV
+       - name: arm-v7a build
+         run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-16-armv7a .

-      - name: install gomobile
-        run: |
-          go get golang.org/x/mobile/cmd/gobind
-          go get golang.org/x/mobile/cmd/gomobile
-          env PATH=$PATH:~/go/bin gomobile init
+       - name: arm64-v8a Set environment variables
+         shell: bash
+         run: |
+           echo "CC=$(echo $ANDROID_HOME/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang)" >> $GITHUB_ENV
+           echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
+           echo 'GOOS=android' >> $GITHUB_ENV
+           echo 'GOARCH=arm64' >> $GITHUB_ENV
+           echo 'CGO_ENABLED=1' >> $GITHUB_ENV
+           echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV

-      - name: arm-v7a gomobile build
-        run: env PATH=$PATH:~/go/bin gomobile bind -v -target=android/arm -javapkg=org.rclone -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} github.com/rclone/rclone/librclone/gomobile
+       - name: arm64-v8a build
+         run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-21-armv8a .

-      - name: arm-v7a Set environment variables
-        shell: bash
-        run: |
-          echo "CC=$(echo $ANDROID_HOME/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi16-clang)" >> $GITHUB_ENV
-          echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
-          echo 'GOOS=android' >> $GITHUB_ENV
-          echo 'GOARCH=arm' >> $GITHUB_ENV
-          echo 'GOARM=7' >> $GITHUB_ENV
-          echo 'CGO_ENABLED=1' >> $GITHUB_ENV
-          echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV
-      - name: arm-v7a build
-        run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-16-armv7a .
+       - name: x86 Set environment variables
+         shell: bash
+         run: |
+           echo "CC=$(echo $ANDROID_HOME/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/bin/i686-linux-android16-clang)" >> $GITHUB_ENV
+           echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
+           echo 'GOOS=android' >> $GITHUB_ENV
+           echo 'GOARCH=386' >> $GITHUB_ENV
+           echo 'CGO_ENABLED=1' >> $GITHUB_ENV
+           echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV

-      - name: arm64-v8a Set environment variables
-        shell: bash
-        run: |
-          echo "CC=$(echo $ANDROID_HOME/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang)" >> $GITHUB_ENV
-          echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
-          echo 'GOOS=android' >> $GITHUB_ENV
-          echo 'GOARCH=arm64' >> $GITHUB_ENV
-          echo 'CGO_ENABLED=1' >> $GITHUB_ENV
-          echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV
+       - name: x86 build
+         run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-16-x86 .

-      - name: arm64-v8a build
-        run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-21-armv8a .
+       - name: x64 Set environment variables
+         shell: bash
+         run: |
+           echo "CC=$(echo $ANDROID_HOME/ndk/21.4.7075529/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android21-clang)" >> $GITHUB_ENV
+           echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
+           echo 'GOOS=android' >> $GITHUB_ENV
+           echo 'GOARCH=amd64' >> $GITHUB_ENV
+           echo 'CGO_ENABLED=1' >> $GITHUB_ENV
+           echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV

-      - name: x86 Set environment variables
-        shell: bash
-        run: |
-          echo "CC=$(echo $ANDROID_HOME/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/bin/i686-linux-android16-clang)" >> $GITHUB_ENV
-          echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
-          echo 'GOOS=android' >> $GITHUB_ENV
-          echo 'GOARCH=386' >> $GITHUB_ENV
-          echo 'CGO_ENABLED=1' >> $GITHUB_ENV
-          echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV
+       - name: x64 build
+         run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-21-x64 .

-      - name: x86 build
-        run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-16-x86 .
-
-      - name: x64 Set environment variables
-        shell: bash
-        run: |
-          echo "CC=$(echo $ANDROID_HOME/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android21-clang)" >> $GITHUB_ENV
-          echo "CC_FOR_TARGET=$CC" >> $GITHUB_ENV
-          echo 'GOOS=android' >> $GITHUB_ENV
-          echo 'GOARCH=amd64' >> $GITHUB_ENV
-          echo 'CGO_ENABLED=1' >> $GITHUB_ENV
-          echo 'CGO_LDFLAGS=-fuse-ld=lld -s -w' >> $GITHUB_ENV
-
-      - name: x64 build
-        run: go build -v -tags android -trimpath -ldflags '-s -X github.com/rclone/rclone/fs.Version='${VERSION} -o build/rclone-android-21-x64 .
-
-      - name: Upload artifacts
-        run: |
-          make ci_upload
-        env:
-          RCLONE_CONFIG_PASS: ${{ secrets.RCLONE_CONFIG_PASS }}
-        # Upload artifacts if not a PR && not a fork
-        if: github.head_ref == '' && github.repository == 'rclone/rclone'
+       - name: Upload artifacts
+         run: |
+           make ci_upload
+         env:
+           RCLONE_CONFIG_PASS: ${{ secrets.RCLONE_CONFIG_PASS }}
+         # Upload artifacts if not a PR && not a fork
+         if: github.head_ref == '' && github.repository == 'rclone/rclone'
--- a/.github/workflows/build_publish_release_docker_image.yml
+++ b/.github/workflows/build_publish_release_docker_image.yml
@@ -37,23 +37,35 @@ jobs:
        if: github.repository == 'rclone/rclone'
        needs: build
        runs-on: ubuntu-latest
-        name: Build docker plugin job
+        name: Build and publish docker volume plugin
        steps:
            - name: Checkout master
              uses: actions/checkout@v2
              with:
                fetch-depth: 0
-            - name: Build and publish docker plugin
+            - name: Set plugin parameters
              shell: bash
              run: |
-                VER=${GITHUB_REF#refs/tags/}
-                PLUGIN_USER=rclone
-                docker login --username ${{ secrets.DOCKER_HUB_USER }} \
-                             --password-stdin <<< "${{ secrets.DOCKER_HUB_PASSWORD }}"
-                for PLUGIN_ARCH in amd64 arm64 arm/v7 ;do
-                    export PLUGIN_USER PLUGIN_ARCH
-                    make docker-plugin PLUGIN_TAG=${PLUGIN_ARCH/\//-}
-                    make docker-plugin PLUGIN_TAG=${PLUGIN_ARCH/\//-}-${VER#v}
-                done
-                make docker-plugin PLUGIN_ARCH=amd64 PLUGIN_TAG=latest
-                make docker-plugin PLUGIN_ARCH=amd64 PLUGIN_TAG=${VER#v}
+                GITHUB_REF=${{ github.ref }}
+
+                PLUGIN_IMAGE_USER=rclone
+                PLUGIN_IMAGE_NAME=docker-volume-rclone
+                PLUGIN_IMAGE_TAG=${GITHUB_REF#refs/tags/}
+                PLUGIN_IMAGE=${PLUGIN_IMAGE_USER}/${PLUGIN_IMAGE_NAME}:${PLUGIN_IMAGE_TAG}
+                PLUGIN_IMAGE_LATEST=${PLUGIN_IMAGE_USER}/${PLUGIN_IMAGE_NAME}:latest
+
+                echo "PLUGIN_IMAGE_USER=${PLUGIN_IMAGE_USER}" >> $GITHUB_ENV
+                echo "PLUGIN_IMAGE_NAME=${PLUGIN_IMAGE_NAME}" >> $GITHUB_ENV
+                echo "PLUGIN_IMAGE_TAG=${PLUGIN_IMAGE_TAG}" >> $GITHUB_ENV
+                echo "PLUGIN_IMAGE=${PLUGIN_IMAGE}" >> $GITHUB_ENV
+                echo "PLUGIN_IMAGE_LATEST=${PLUGIN_IMAGE_LATEST}" >> $GITHUB_ENV
+            - name: Build image
+              shell: bash
+              run: |
+                make docker-plugin
+            - name: Push image
+              shell: bash
+              run: |
+                docker login -u ${{ secrets.DOCKER_HUB_USER }} -p ${{ secrets.DOCKER_HUB_PASSWORD }}
+                make docker-plugin-push PLUGIN_IMAGE=${PLUGIN_IMAGE}
+                make docker-plugin-push PLUGIN_IMAGE=${PLUGIN_IMAGE_LATEST}
--- a/.gitignore
+++ b/.gitignore
@@ -14,4 +14,3 @@ fuzz-build.zip
 *.orig
 *.rej
 Thumbs.db
-__pycache__
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -5,7 +5,7 @@ linters:
    - deadcode
    - errcheck
    - goimports
-    - revive
+    - golint
    - ineffassign
    - structcheck
    - varcheck
@@ -24,7 +24,3 @@ issues:

  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
  max-same-issues: 0
-
-run:
-  # timeout for analysis, e.g. 30s, 5m, default is 1m
-  timeout: 10m
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -48,12 +48,10 @@ Now [install Go](https://golang.org/doc/install) and verify your installation:

 Great, you can now compile and execute your own version of rclone:

-    go build
+    go build                              
    ./rclone version

-(Note that you can also replace `go build` with `make`, which will include a
-more accurate version number in the executable as well as enable you to specify
-more build options.) Finally make a branch to add your new feature
+Finally make a branch to add your new feature

    git checkout -b my-new-feature

@@ -223,7 +221,7 @@ find the results at https://pub.rclone.org/integration-tests/
 Rclone code is organised into a small number of top level directories
 with modules beneath.

-  * backend - the rclone backends for interfacing to cloud providers -
+  * backend - the rclone backends for interfacing to cloud providers - 
    * all - import this to load all the cloud providers
    * ...providers
  * bin - scripts for use while building or maintaining rclone
@@ -233,7 +231,7 @@ with modules beneath.
  * cmdtest - end-to-end tests of commands, flags, environment variables,...
  * docs - the documentation and website
    * content - adjust these docs only - everything else is autogenerated
-      * command - these are auto-generated - edit the corresponding .go file
+      * command - these are auto generated - edit the corresponding .go file
  * fs - main rclone definitions - minimal amount of code
    * accounting - bandwidth limiting and statistics
    * asyncreader - an io.Reader which reads ahead
@@ -275,39 +273,18 @@ If you add a new general flag (not for a backend), then document it in
 alphabetical order.

 If you add a new backend option/flag, then it should be documented in
-the source file in the `Help:` field.
-
-  * Start with the most important information about the option,
-    as a single sentence on a single line.
-    * This text will be used for the command-line flag help.
-    * It will be combined with other information, such as any default value,
-      and the result will look odd if not written as a single sentence.
-    * It should end with a period/full stop character, which will be shown
-      in docs but automatically removed when producing the flag help.
-    * Try to keep it below 80 characters, to reduce text wrapping in the terminal.
-  * More details can be added in a new paragraph, after an empty line (`"\n\n"`).
-    * Like with docs generated from Markdown, a single line break is ignored
-      and two line breaks creates a new paragraph.
-    * This text will be shown to the user in `rclone config`
-      and in the docs (where it will be added by `make backenddocs`,
-      normally run some time before next release).
-  * To create options of enumeration type use the `Examples:` field.
-    * Each example value have their own `Help:` field, but they are treated
-      a bit different than the main option help text. They will be shown
-      as an unordered list, therefore a single line break is enough to
-      create a new list item. Also, for enumeration texts like name of
-      countries, it looks better without an ending period/full stop character.
+the source file in the `Help:` field.  The first line of this is used
+for the flag help, the remainder is shown to the user in `rclone
+config` and is added to the docs with `make backenddocs`.

 The only documentation you need to edit are the `docs/content/*.md`
-files.  The `MANUAL.*`, `rclone.1`, website, etc. are all auto-generated
+files.  The `MANUAL.*`, `rclone.1`, web site, etc. are all auto generated
 from those during the release process.  See the `make doc` and `make
 website` targets in the Makefile if you are interested in how.  You
 don't need to run these when adding a feature.

 Documentation for rclone sub commands is with their code, e.g.
-`cmd/ls/ls.go`. Write flag help strings as a single sentence on a single
-line, without a period/full stop character at the end, as it will be
-combined unmodified with other information (such as any default value).
+`cmd/ls/ls.go`.

 Note that you can use [GitHub's online editor](https://help.github.com/en/github/managing-files-in-a-repository/editing-files-in-another-users-repository)
 for small changes in the docs which makes it very easy.
@@ -350,7 +327,7 @@ And here is an example of a longer one:
 ```
 mount: fix hang on errored upload

-In certain circumstances, if an upload failed then the mount could hang
+In certain circumstances if an upload failed then the mount could hang
 indefinitely. This was fixed by closing the read pipe after the Put
 completed.  This will cause the write side to return a pipe closed
 error fixing the hang.
@@ -382,7 +359,7 @@ and `go.sum` in the same commit as your other changes.

 If you need to update a dependency then run

-    GO111MODULE=on go get -u golang.org/x/crypto
+    GO111MODULE=on go get -u github.com/pkg/errors

 Check in a single commit as above.

@@ -425,8 +402,8 @@ Research
 Getting going

  * Create `backend/remote/remote.go` (copy this from a similar remote)
-    * box is a good one to start from if you have a directory-based remote
-    * b2 is a good one to start from if you have a bucket-based remote
+    * box is a good one to start from if you have a directory based remote
+    * b2 is a good one to start from if you have a bucket based remote
  * Add your remote to the imports in `backend/all/all.go`
  * HTTP based remotes are easiest to maintain if they use rclone's rest module, but if there is a really good go SDK then use that instead.
  * Try to implement as many optional methods as possible as it makes the remote more usable.
--- a/MAINTAINERS.md
+++ b/MAINTAINERS.md
@@ -19,7 +19,7 @@ Current active maintainers of rclone are:

 **This is a work in progress Draft**

-This is a guide for how to be an rclone maintainer.  This is mostly a write-up of what I (@ncw) attempt to do.
+This is a guide for how to be an rclone maintainer.  This is mostly a writeup of what I (@ncw) attempt to do.

 ## Triaging Tickets ##

@@ -27,15 +27,15 @@ When a ticket comes in it should be triaged.  This means it should be classified

 Rclone uses the labels like this:

-* `bug` - a definitely verified bug
+* `bug` - a definite verified bug
 * `can't reproduce` - a problem which we can't reproduce
 * `doc fix` - a bug in the documentation - if users need help understanding the docs add this label
 * `duplicate` - normally close these and ask the user to subscribe to the original
 * `enhancement: new remote` - a new rclone backend
 * `enhancement` - a new feature
 * `FUSE` - to do with `rclone mount` command
-* `good first issue` - mark these if you find a small self-contained issue - these get shown to new visitors to the project
-* `help` wanted - mark these if you find a self-contained issue - these get shown to new visitors to the project
+* `good first issue` - mark these if you find a small self contained issue - these get shown to new visitors to the project
+* `help` wanted - mark these if you find a self contained issue - these get shown to new visitors to the project
 * `IMPORTANT` - note to maintainers not to forget to fix this for the release
 * `maintenance` - internal enhancement, code re-organisation, etc.
 * `Needs Go 1.XX` - waiting for that version of Go to be released
@@ -51,7 +51,7 @@ The milestones have these meanings:

 * v1.XX - stuff we would like to fit into this release
 * v1.XX+1 - stuff we are leaving until the next release
-* Soon - stuff we think is a good idea - waiting to be scheduled for a release
+* Soon - stuff we think is a good idea - waiting to be scheduled to a release
 * Help wanted - blue sky stuff that might get moved up, or someone could help with
 * Known bugs - bugs waiting on external factors or we aren't going to fix for the moment

@@ -65,7 +65,7 @@ Close tickets as soon as you can - make sure they are tagged with a release.  Po

 Try to process pull requests promptly!

-Merging pull requests on GitHub itself works quite well nowadays so you can squash and rebase or rebase pull requests.  rclone doesn't use merge commits.  Use the squash and rebase option if you need to edit the commit message.
+Merging pull requests on GitHub itself works quite well now-a-days so you can squash and rebase or rebase pull requests.  rclone doesn't use merge commits.  Use the squash and rebase option if you need to edit the commit message.

 After merging the commit, in your local master branch, do `git pull` then run `bin/update-authors.py` to update the authors file then `git push`.

@@ -81,15 +81,15 @@ Rclone aims for a 6-8 week release cycle.  Sometimes release cycles take longer

 High impact regressions should be fixed before the next release.

-Near the start of the release cycle, the dependencies should be updated with `make update` to give time for bugs to surface.
+Near the start of the release cycle the dependencies should be updated with `make update` to give time for bugs to surface.

 Towards the end of the release cycle try not to merge anything too big so let things settle down.

-Follow the instructions in RELEASE.md for making the release. Note that the testing part is the most time-consuming often needing several rounds of test and fix depending on exactly how many new features rclone has gained.
+Follow the instructions in RELEASE.md for making the release. Note that the testing part is the most time consuming often needing several rounds of test and fix depending on exactly how many new features rclone has gained.

 ## Mailing list ##

-There is now an invite-only mailing list for rclone developers `rclone-dev` on google groups.
+There is now an invite only mailing list for rclone developers `rclone-dev` on google groups.

 ## TODO ##

--- a/MANUAL.html
+++ b/MANUAL.html
--- a/MANUAL.md
+++ b/MANUAL.md
--- a/MANUAL.txt
+++ b/MANUAL.txt
--- a/53
+++ b/53
@@ -104,14 +104,10 @@ showupdates:
 	@echo "*** Direct dependencies that could be updated ***"
 	@GO111MODULE=on go list -u -f '{{if (and (not (or .Main .Indirect)) .Update)}}{{.Path}}: {{.Version}} -> {{.Update.Version}}{{end}}' -m all 2> /dev/null

-# Update direct dependencies only
-updatedirect:
-	GO111MODULE=on go get -d $$(go list -m -f '{{if not (or .Main .Indirect)}}{{.Path}}{{end}}' all)
-	GO111MODULE=on go mod tidy
-
 # Update direct and indirect dependencies and test dependencies
 update:
-	GO111MODULE=on go get -d -u -t ./...
+	GO111MODULE=on go get -u -t ./...
+	-#GO111MODULE=on go get -d $(go list -m -f '{{if not (or .Main .Indirect)}}{{.Path}}{{end}}' all)
 	GO111MODULE=on go mod tidy

 # Tidy the module dependencies
@@ -262,31 +258,34 @@ winzip:
 	zip -9 rclone-$(TAG).zip rclone.exe

 # docker volume plugin
-PLUGIN_USER ?= rclone
-PLUGIN_TAG ?= latest
-PLUGIN_BASE_TAG ?= latest
-PLUGIN_ARCH ?= amd64
-PLUGIN_IMAGE := $(PLUGIN_USER)/docker-volume-rclone:$(PLUGIN_TAG)
-PLUGIN_BASE := $(PLUGIN_USER)/rclone:$(PLUGIN_BASE_TAG)
+PLUGIN_IMAGE_USER ?= rclone
+PLUGIN_IMAGE_TAG ?= latest
+PLUGIN_IMAGE_NAME ?= docker-volume-rclone
+PLUGIN_IMAGE ?= $(PLUGIN_IMAGE_USER)/$(PLUGIN_IMAGE_NAME):$(PLUGIN_IMAGE_TAG)
+
+PLUGIN_BASE_IMAGE := rclone/rclone:latest
 PLUGIN_BUILD_DIR := ./build/docker-plugin
-PLUGIN_CONTRIB_DIR := ./contrib/docker-plugin/managed
+PLUGIN_CONTRIB_DIR := ./cmd/serve/docker/contrib/plugin
+PLUGIN_CONFIG := $(PLUGIN_CONTRIB_DIR)/config.json
+PLUGIN_DOCKERFILE := $(PLUGIN_CONTRIB_DIR)/Dockerfile
+PLUGIN_CONTAINER := docker-volume-rclone-dev-$(shell date +'%Y%m%d-%H%M%S')
+
+docker-plugin: docker-plugin-rootfs docker-plugin-create
+
+docker-plugin-image: rclone
+	docker build --no-cache --pull --build-arg BASE_IMAGE=${PLUGIN_BASE_IMAGE} -t ${PLUGIN_IMAGE} -f ${PLUGIN_DOCKERFILE} .
+
+docker-plugin-rootfs: docker-plugin-image
+	mkdir -p ${PLUGIN_BUILD_DIR}/rootfs
+	docker create --name ${PLUGIN_CONTAINER} ${PLUGIN_IMAGE}
+	docker export ${PLUGIN_CONTAINER} | tar -x -C ${PLUGIN_BUILD_DIR}/rootfs
+	docker rm -vf ${PLUGIN_CONTAINER}
+	cp ${PLUGIN_CONFIG} ${PLUGIN_BUILD_DIR}/config.json

 docker-plugin-create:
-	docker buildx inspect |grep -q /${PLUGIN_ARCH} || \
-	docker run --rm --privileged tonistiigi/binfmt --install all
-	rm -rf ${PLUGIN_BUILD_DIR}
-	docker buildx build \
-		--no-cache --pull \
-		--build-arg BASE_IMAGE=${PLUGIN_BASE} \
-		--platform linux/${PLUGIN_ARCH} \
-		--output ${PLUGIN_BUILD_DIR}/rootfs \
-		${PLUGIN_CONTRIB_DIR}
-	cp ${PLUGIN_CONTRIB_DIR}/config.json ${PLUGIN_BUILD_DIR}
-	docker plugin rm --force ${PLUGIN_IMAGE} 2>/dev/null || true
+	docker plugin rm -f ${PLUGIN_IMAGE} 2>/dev/null || true
 	docker plugin create ${PLUGIN_IMAGE} ${PLUGIN_BUILD_DIR}

-docker-plugin-push:
+docker-plugin-push: docker-plugin-create
 	docker plugin push ${PLUGIN_IMAGE}
 	docker plugin rm ${PLUGIN_IMAGE}
-
-docker-plugin: docker-plugin-create docker-plugin-push
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@

 [Website](https://rclone.org) |
 [Documentation](https://rclone.org/docs/) |
-[Download](https://rclone.org/downloads/) |
+[Download](https://rclone.org/downloads/) | 
 [Contributing](CONTRIBUTING.md) |
 [Changelog](https://rclone.org/changelog/) |
 [Installation](https://rclone.org/install/) |
@@ -10,12 +10,12 @@

 [![Build Status](https://github.com/rclone/rclone/workflows/build/badge.svg)](https://github.com/rclone/rclone/actions?query=workflow%3Abuild)
 [![Go Report Card](https://goreportcard.com/badge/github.com/rclone/rclone)](https://goreportcard.com/report/github.com/rclone/rclone)
-[![GoDoc](https://godoc.org/github.com/rclone/rclone?status.svg)](https://godoc.org/github.com/rclone/rclone)
+[![GoDoc](https://godoc.org/github.com/rclone/rclone?status.svg)](https://godoc.org/github.com/rclone/rclone) 
 [![Docker Pulls](https://img.shields.io/docker/pulls/rclone/rclone)](https://hub.docker.com/r/rclone/rclone)

 # Rclone

-Rclone *("rsync for cloud storage")* is a command-line program to sync files and directories to and from different cloud storage providers.
+Rclone *("rsync for cloud storage")* is a command line program to sync files and directories to and from different cloud storage providers.

 ## Storage providers

@@ -32,6 +32,7 @@ Rclone *("rsync for cloud storage")* is a command-line program to sync files and
  * Dropbox [:page_facing_up:](https://rclone.org/dropbox/)
  * Enterprise File Fabric [:page_facing_up:](https://rclone.org/filefabric/)
  * FTP [:page_facing_up:](https://rclone.org/ftp/)
+  * GetSky [:page_facing_up:](https://rclone.org/jottacloud/)
  * Google Cloud Storage [:page_facing_up:](https://rclone.org/googlecloudstorage/)
  * Google Drive [:page_facing_up:](https://rclone.org/drive/)
  * Google Photos [:page_facing_up:](https://rclone.org/googlephotos/)
@@ -59,7 +60,6 @@ Rclone *("rsync for cloud storage")* is a command-line program to sync files and
  * put.io [:page_facing_up:](https://rclone.org/putio/)
  * QingStor [:page_facing_up:](https://rclone.org/qingstor/)
  * Rackspace Cloud Files [:page_facing_up:](https://rclone.org/swift/)
-  * RackCorp Object Storage [:page_facing_up:](https://rclone.org/s3/#RackCorp)
  * Scaleway [:page_facing_up:](https://rclone.org/s3/#scaleway)
  * Seafile [:page_facing_up:](https://rclone.org/seafile/)
  * SeaweedFS [:page_facing_up:](https://rclone.org/s3/#seaweedfs)
@@ -73,7 +73,7 @@ Rclone *("rsync for cloud storage")* is a command-line program to sync files and
  * Yandex Disk [:page_facing_up:](https://rclone.org/yandex/)
  * Zoho WorkDrive [:page_facing_up:](https://rclone.org/zoho/)
  * The local filesystem [:page_facing_up:](https://rclone.org/local/)
-
+  
 Please see [the full list of all storage providers and their features](https://rclone.org/overview/)

 ## Features
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -34,24 +34,13 @@ This file describes how to make the various kinds of releases
  * make startdev # make startstable for stable branch
  * # announce with forum post, twitter post, patreon post

-## Update dependencies
-
 Early in the next release cycle update the dependencies

  * Review any pinned packages in go.mod and remove if possible
-  * make updatedirect
-  * make
-  * git commit -a -v
  * make update
-  * make
-  * roll back any updates which didn't compile
-  * git commit -a -v --amend
-
-Note that `make update` updates all direct and indirect dependencies
-and there can occasionally be forwards compatibility problems with
-doing that so it may be necessary to roll back dependencies to the
-version specified by `make updatedirect` in order to get rclone to
-build.
+  * git status
+  * git add new files
+  * git commit -a -v

 ## Making a point release

--- a/2
+++ b/2
@@ -1 +1 @@
-v1.58.0
+v1.57.0
--- a/backend/alias/alias.go
+++ b/backend/alias/alias.go
@@ -20,7 +20,7 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "remote",
-			Help:     "Remote or path to alias.\n\nCan be \"myremote:path/to/dir\", \"myremote:bucket\", \"myremote:\" or \"/local/path\".",
+			Help:     "Remote or path to alias.\nCan be \"myremote:path/to/dir\", \"myremote:bucket\", \"myremote:\" or \"/local/path\".",
 			Required: true,
 		}},
 	}
--- a/backend/all/all.go
+++ b/backend/all/all.go
@@ -18,7 +18,6 @@ import (
 	_ "github.com/rclone/rclone/backend/ftp"
 	_ "github.com/rclone/rclone/backend/googlecloudstorage"
 	_ "github.com/rclone/rclone/backend/googlephotos"
-	_ "github.com/rclone/rclone/backend/hasher"
 	_ "github.com/rclone/rclone/backend/hdfs"
 	_ "github.com/rclone/rclone/backend/http"
 	_ "github.com/rclone/rclone/backend/hubic"
@@ -38,7 +37,6 @@ import (
 	_ "github.com/rclone/rclone/backend/seafile"
 	_ "github.com/rclone/rclone/backend/sftp"
 	_ "github.com/rclone/rclone/backend/sharefile"
-	_ "github.com/rclone/rclone/backend/sia"
 	_ "github.com/rclone/rclone/backend/sugarsync"
 	_ "github.com/rclone/rclone/backend/swift"
 	_ "github.com/rclone/rclone/backend/tardigrade"
--- a/backend/amazonclouddrive/amazonclouddrive.go
+++ b/backend/amazonclouddrive/amazonclouddrive.go
@@ -14,7 +14,6 @@ we ignore assets completely!
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -23,6 +22,7 @@ import (
 	"time"

 	acd "github.com/ncw/go-acd"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
@@ -259,7 +259,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 	oAuthClient, ts, err := oauthutil.NewClientWithBaseClient(ctx, name, m, acdConfig, baseClient)
 	if err != nil {
-		return nil, fmt.Errorf("failed to configure Amazon Drive: %w", err)
+		return nil, errors.Wrap(err, "failed to configure Amazon Drive")
 	}

 	c := acd.NewClient(oAuthClient)
@@ -292,13 +292,13 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		return f.shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to get endpoints: %w", err)
+		return nil, errors.Wrap(err, "failed to get endpoints")
 	}

 	// Get rootID
 	rootInfo, err := f.getRootInfo(ctx)
 	if err != nil || rootInfo.Id == nil {
-		return nil, fmt.Errorf("failed to get root: %w", err)
+		return nil, errors.Wrap(err, "failed to get root")
 	}
 	f.trueRootID = *rootInfo.Id

--- a/backend/amazonclouddrive/amazonclouddrive_test.go
+++ b/backend/amazonclouddrive/amazonclouddrive_test.go
@@ -1,6 +1,5 @@
 // Test AmazonCloudDrive filesystem interface

-//go:build acd
 // +build acd

 package amazonclouddrive_test
--- a/backend/azureblob/azureblob.go
+++ b/backend/azureblob/azureblob.go
@@ -1,7 +1,6 @@
 // Package azureblob provides an interface to the Microsoft Azure blob object storage system

-//go:build !plan9 && !solaris && !js
-// +build !plan9,!solaris,!js
+// +build !plan9,!solaris,!js,go1.14

 package azureblob

@@ -10,14 +9,12 @@ import (
 	"encoding/base64"
 	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
 	"net/http"
 	"net/url"
 	"path"
-	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -25,6 +22,7 @@ import (
 	"github.com/Azure/azure-pipeline-go/pipeline"
 	"github.com/Azure/azure-storage-blob-go/azblob"
 	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
@@ -50,6 +48,8 @@ const (
 	timeFormatOut         = "2006-01-02T15:04:05.000000000Z07:00"
 	storageDefaultBaseURL = "blob.core.windows.net"
 	defaultChunkSize      = 4 * fs.Mebi
+	maxChunkSize          = 100 * fs.Mebi
+	uploadConcurrency     = 4
 	defaultAccessTier     = azblob.AccessTierNone
 	maxTryTimeout         = time.Hour * 24 * 365 //max time of an azure web request response window (whether or not data is flowing)
 	// Default storage account, key and blob endpoint for emulator support,
@@ -73,7 +73,7 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name: "account",
-			Help: "Storage Account Name.\n\nLeave blank to use SAS URL or Emulator.",
+			Help: "Storage Account Name (leave blank to use SAS URL or Emulator)",
 		}, {
 			Name: "service_principal_file",
 			Help: `Path to file containing credentials for use with a service principal.
@@ -89,13 +89,13 @@ See ["Create an Azure service principal"](https://docs.microsoft.com/en-us/cli/a
 `,
 		}, {
 			Name: "key",
-			Help: "Storage Account Key.\n\nLeave blank to use SAS URL or Emulator.",
+			Help: "Storage Account Key (leave blank to use SAS URL or Emulator)",
 		}, {
 			Name: "sas_url",
-			Help: "SAS URL for container level access only.\n\nLeave blank if using account/key or Emulator.",
+			Help: "SAS URL for container level access only\n(leave blank if using account/key or Emulator)",
 		}, {
 			Name: "use_msi",
-			Help: `Use a managed service identity to authenticate (only works in Azure).
+			Help: `Use a managed service identity to authenticate (only works in Azure)

 When true, use a [managed service identity](https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/)
 to authenticate to Azure Storage instead of a SAS token or account key.
@@ -108,57 +108,36 @@ msi_client_id, or msi_mi_res_id parameters.`,
 			Default: false,
 		}, {
 			Name:     "msi_object_id",
-			Help:     "Object ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_client_id or msi_mi_res_id specified.",
+			Help:     "Object ID of the user-assigned MSI to use, if any. Leave blank if msi_client_id or msi_mi_res_id specified.",
 			Advanced: true,
 		}, {
 			Name:     "msi_client_id",
-			Help:     "Object ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_object_id or msi_mi_res_id specified.",
+			Help:     "Object ID of the user-assigned MSI to use, if any. Leave blank if msi_object_id or msi_mi_res_id specified.",
 			Advanced: true,
 		}, {
 			Name:     "msi_mi_res_id",
-			Help:     "Azure resource ID of the user-assigned MSI to use, if any.\n\nLeave blank if msi_client_id or msi_object_id specified.",
+			Help:     "Azure resource ID of the user-assigned MSI to use, if any. Leave blank if msi_client_id or msi_object_id specified.",
 			Advanced: true,
 		}, {
 			Name:    "use_emulator",
-			Help:    "Uses local storage emulator if provided as 'true'.\n\nLeave blank if using real azure storage endpoint.",
+			Help:    "Uses local storage emulator if provided as 'true' (leave blank if using real azure storage endpoint)",
 			Default: false,
 		}, {
 			Name:     "endpoint",
-			Help:     "Endpoint for the service.\n\nLeave blank normally.",
+			Help:     "Endpoint for the service\nLeave blank normally.",
 			Advanced: true,
 		}, {
 			Name:     "upload_cutoff",
-			Help:     "Cutoff for switching to chunked upload (<= 256 MiB) (deprecated).",
+			Help:     "Cutoff for switching to chunked upload (<= 256 MiB). (Deprecated)",
 			Advanced: true,
 		}, {
 			Name: "chunk_size",
-			Help: `Upload chunk size.
+			Help: `Upload chunk size (<= 100 MiB).

 Note that this is stored in memory and there may be up to
-"--transfers" * "--azureblob-upload-concurrency" chunks stored at once
-in memory.`,
+"--transfers" chunks stored at once in memory.`,
 			Default:  defaultChunkSize,
 			Advanced: true,
-		}, {
-			Name: "upload_concurrency",
-			Help: `Concurrency for multipart uploads.
-
-This is the number of chunks of the same file that are uploaded
-concurrently.
-
-If you are uploading small numbers of large files over high-speed
-links and these uploads do not fully utilize your bandwidth, then
-increasing this may help to speed up the transfers.
-
-In tests, upload speed increases almost linearly with upload
-concurrency. For example to fill a gigabit pipe it may be necessary to
-raise this to 64. Note that this will use more memory.
-
-Note that chunks are stored in memory and there may be up to
-"--transfers" * "--azureblob-upload-concurrency" chunks stored at once
-in memory.`,
-			Default:  16,
-			Advanced: true,
 		}, {
 			Name: "list_chunk",
 			Help: `Size of blob list.
@@ -220,7 +199,6 @@ to start uploading.`,
 			Default:  memoryPoolFlushTime,
 			Advanced: true,
 			Help: `How often internal memory buffer pools will be flushed.
-
 Uploads which requires additional buffers (f.e multipart) will use memory pool for allocations.
 This option controls how often unused buffers will be removed from the pool.`,
 		}, {
@@ -240,12 +218,12 @@ This option controls how often unused buffers will be removed from the pool.`,
 				encoder.EncodeRightPeriod),
 		}, {
 			Name:    "public_access",
-			Help:    "Public access level of a container: blob or container.",
+			Help:    "Public access level of a container: blob, container.",
 			Default: string(azblob.PublicAccessNone),
 			Examples: []fs.OptionExample{
 				{
 					Value: string(azblob.PublicAccessNone),
-					Help:  "The container and its blobs can be accessed only with an authorized request.\nIt's a default value.",
+					Help:  "The container and its blobs can be accessed only with an authorized request. It's a default value",
 				}, {
 					Value: string(azblob.PublicAccessBlob),
 					Help:  "Blob data within this container can be read via anonymous request.",
@@ -255,11 +233,6 @@ This option controls how often unused buffers will be removed from the pool.`,
 				},
 			},
 			Advanced: true,
-		}, {
-			Name:     "no_head_object",
-			Help:     `If set, do not do HEAD before GET when getting objects.`,
-			Default:  false,
-			Advanced: true,
 		}},
 	})
 }
@@ -276,7 +249,6 @@ type Options struct {
 	Endpoint             string               `config:"endpoint"`
 	SASURL               string               `config:"sas_url"`
 	ChunkSize            fs.SizeSuffix        `config:"chunk_size"`
-	UploadConcurrency    int                  `config:"upload_concurrency"`
 	ListChunkSize        uint                 `config:"list_chunk"`
 	AccessTier           string               `config:"access_tier"`
 	ArchiveTierDelete    bool                 `config:"archive_tier_delete"`
@@ -286,7 +258,6 @@ type Options struct {
 	MemoryPoolUseMmap    bool                 `config:"memory_pool_use_mmap"`
 	Enc                  encoder.MultiEncoder `config:"encoding"`
 	PublicAccess         string               `config:"public_access"`
-	NoHeadObject         bool                 `config:"no_head_object"`
 }

 // Fs represents a remote azure server
@@ -434,7 +405,10 @@ func (f *Fs) shouldRetry(ctx context.Context, err error) (bool, error) {
 func checkUploadChunkSize(cs fs.SizeSuffix) error {
 	const minChunkSize = fs.SizeSuffixBase
 	if cs < minChunkSize {
-		return fmt.Errorf("%s is less than %s", cs, minChunkSize)
+		return errors.Errorf("%s is less than %s", cs, minChunkSize)
+	}
+	if cs > maxChunkSize {
+		return errors.Errorf("%s is greater than %s", cs, maxChunkSize)
 	}
 	return nil
 }
@@ -476,11 +450,11 @@ const azureStorageEndpoint = "https://storage.azure.com/"
 func newServicePrincipalTokenRefresher(ctx context.Context, credentialsData []byte) (azblob.TokenRefresher, error) {
 	var spCredentials servicePrincipalCredentials
 	if err := json.Unmarshal(credentialsData, &spCredentials); err != nil {
-		return nil, fmt.Errorf("error parsing credentials from JSON file: %w", err)
+		return nil, errors.Wrap(err, "error parsing credentials from JSON file")
 	}
 	oauthConfig, err := adal.NewOAuthConfig(azureActiveDirectoryEndpoint, spCredentials.Tenant)
 	if err != nil {
-		return nil, fmt.Errorf("error creating oauth config: %w", err)
+		return nil, errors.Wrap(err, "error creating oauth config")
 	}

 	// Create service principal token for Azure Storage.
@@ -490,7 +464,7 @@ func newServicePrincipalTokenRefresher(ctx context.Context, credentialsData []by
 		spCredentials.Password,
 		azureStorageEndpoint)
 	if err != nil {
-		return nil, fmt.Errorf("error creating service principal token: %w", err)
+		return nil, errors.Wrap(err, "error creating service principal token")
 	}

 	// Wrap token inside a refresher closure.
@@ -543,10 +517,10 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e

 	err = checkUploadChunkSize(opt.ChunkSize)
 	if err != nil {
-		return nil, fmt.Errorf("azure: chunk size: %w", err)
+		return nil, errors.Wrap(err, "azure: chunk size")
 	}
 	if opt.ListChunkSize > maxListChunkSize {
-		return nil, fmt.Errorf("azure: blob list size can't be greater than %v - was %v", maxListChunkSize, opt.ListChunkSize)
+		return nil, errors.Errorf("azure: blob list size can't be greater than %v - was %v", maxListChunkSize, opt.ListChunkSize)
 	}
 	if opt.Endpoint == "" {
 		opt.Endpoint = storageDefaultBaseURL
@@ -555,12 +529,12 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	if opt.AccessTier == "" {
 		opt.AccessTier = string(defaultAccessTier)
 	} else if !validateAccessTier(opt.AccessTier) {
-		return nil, fmt.Errorf("Azure Blob: Supported access tiers are %s, %s and %s",
+		return nil, errors.Errorf("Azure Blob: Supported access tiers are %s, %s and %s",
 			string(azblob.AccessTierHot), string(azblob.AccessTierCool), string(azblob.AccessTierArchive))
 	}

 	if !validatePublicAccess((opt.PublicAccess)) {
-		return nil, fmt.Errorf("Azure Blob: Supported public access level are %s and %s",
+		return nil, errors.Errorf("Azure Blob: Supported public access level are %s and %s",
 			string(azblob.PublicAccessBlob), string(azblob.PublicAccessContainer))
 	}

@@ -602,11 +576,11 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	case opt.UseEmulator:
 		credential, err := azblob.NewSharedKeyCredential(emulatorAccount, emulatorAccountKey)
 		if err != nil {
-			return nil, fmt.Errorf("Failed to parse credentials: %w", err)
+			return nil, errors.Wrapf(err, "Failed to parse credentials")
 		}
 		u, err = url.Parse(emulatorBlobEndpoint)
 		if err != nil {
-			return nil, fmt.Errorf("failed to make azure storage url from account and endpoint: %w", err)
+			return nil, errors.Wrap(err, "failed to make azure storage url from account and endpoint")
 		}
 		pipeline := f.newPipeline(credential, azblob.PipelineOptions{Retry: azblob.RetryOptions{TryTimeout: maxTryTimeout}})
 		serviceURL = azblob.NewServiceURL(*u, pipeline)
@@ -648,12 +622,12 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		})

 		if err != nil {
-			return nil, fmt.Errorf("Failed to acquire MSI token: %w", err)
+			return nil, errors.Wrapf(err, "Failed to acquire MSI token")
 		}

 		u, err = url.Parse(fmt.Sprintf("https://%s.%s", opt.Account, opt.Endpoint))
 		if err != nil {
-			return nil, fmt.Errorf("failed to make azure storage url from account and endpoint: %w", err)
+			return nil, errors.Wrap(err, "failed to make azure storage url from account and endpoint")
 		}
 		credential := azblob.NewTokenCredential(token.AccessToken, func(credential azblob.TokenCredential) time.Duration {
 			fs.Debugf(f, "Token refresher called.")
@@ -683,19 +657,19 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	case opt.Account != "" && opt.Key != "":
 		credential, err := azblob.NewSharedKeyCredential(opt.Account, opt.Key)
 		if err != nil {
-			return nil, fmt.Errorf("Failed to parse credentials: %w", err)
+			return nil, errors.Wrapf(err, "Failed to parse credentials")
 		}

 		u, err = url.Parse(fmt.Sprintf("https://%s.%s", opt.Account, opt.Endpoint))
 		if err != nil {
-			return nil, fmt.Errorf("failed to make azure storage url from account and endpoint: %w", err)
+			return nil, errors.Wrap(err, "failed to make azure storage url from account and endpoint")
 		}
 		pipeline := f.newPipeline(credential, azblob.PipelineOptions{Retry: azblob.RetryOptions{TryTimeout: maxTryTimeout}})
 		serviceURL = azblob.NewServiceURL(*u, pipeline)
 	case opt.SASURL != "":
 		u, err = url.Parse(opt.SASURL)
 		if err != nil {
-			return nil, fmt.Errorf("failed to parse SAS URL: %w", err)
+			return nil, errors.Wrapf(err, "failed to parse SAS URL")
 		}
 		// use anonymous credentials in case of sas url
 		pipeline := f.newPipeline(azblob.NewAnonymousCredential(), azblob.PipelineOptions{Retry: azblob.RetryOptions{TryTimeout: maxTryTimeout}})
@@ -715,17 +689,17 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		// Create a standard URL.
 		u, err = url.Parse(fmt.Sprintf("https://%s.%s", opt.Account, opt.Endpoint))
 		if err != nil {
-			return nil, fmt.Errorf("failed to make azure storage url from account and endpoint: %w", err)
+			return nil, errors.Wrap(err, "failed to make azure storage url from account and endpoint")
 		}
 		// Try loading service principal credentials from file.
 		loadedCreds, err := ioutil.ReadFile(env.ShellExpand(opt.ServicePrincipalFile))
 		if err != nil {
-			return nil, fmt.Errorf("error opening service principal credentials file: %w", err)
+			return nil, errors.Wrap(err, "error opening service principal credentials file")
 		}
 		// Create a token refresher from service principal credentials.
 		tokenRefresher, err := newServicePrincipalTokenRefresher(ctx, loadedCreds)
 		if err != nil {
-			return nil, fmt.Errorf("failed to create a service principal token: %w", err)
+			return nil, errors.Wrap(err, "failed to create a service principal token")
 		}
 		options := azblob.PipelineOptions{Retry: azblob.RetryOptions{TryTimeout: maxTryTimeout}}
 		pipe := f.newPipeline(azblob.NewTokenCredential("", tokenRefresher), options)
@@ -782,7 +756,7 @@ func (f *Fs) newObjectWithInfo(remote string, info *azblob.BlobItemInternal) (fs
 		if err != nil {
 			return nil, err
 		}
-	} else if !o.fs.opt.NoHeadObject {
+	} else {
 		err := o.readMetaData() // reads info and headers, returning an error
 		if err != nil {
 			return nil, err
@@ -1341,7 +1315,7 @@ func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
 	}
 	data, err := base64.StdEncoding.DecodeString(o.md5)
 	if err != nil {
-		return "", fmt.Errorf("Failed to decode Content-MD5: %q: %w", o.md5, err)
+		return "", errors.Wrapf(err, "Failed to decode Content-MD5: %q", o.md5)
 	}
 	return hex.EncodeToString(data), nil
 }
@@ -1392,39 +1366,6 @@ func (o *Object) decodeMetaDataFromPropertiesResponse(info *azblob.BlobGetProper
 	return nil
 }

-func (o *Object) decodeMetaDataFromDownloadResponse(info *azblob.DownloadResponse) (err error) {
-	metadata := info.NewMetadata()
-	size := info.ContentLength()
-	if isDirectoryMarker(size, metadata, o.remote) {
-		return fs.ErrorNotAFile
-	}
-	// NOTE - Client library always returns MD5 as base64 decoded string, Object needs to maintain
-	// this as base64 encoded string.
-	o.md5 = base64.StdEncoding.EncodeToString(info.ContentMD5())
-	o.mimeType = info.ContentType()
-	o.size = size
-	o.modTime = info.LastModified()
-	o.accessTier = o.AccessTier()
-	o.setMetadata(metadata)
-
-	// If it was a Range request, the size is wrong, so correct it
-	if contentRange := info.ContentRange(); contentRange != "" {
-		slash := strings.IndexRune(contentRange, '/')
-		if slash >= 0 {
-			i, err := strconv.ParseInt(contentRange[slash+1:], 10, 64)
-			if err == nil {
-				o.size = i
-			} else {
-				fs.Debugf(o, "Failed to find parse integer from in %q: %v", contentRange, err)
-			}
-		} else {
-			fs.Debugf(o, "Failed to find length in %q", contentRange)
-		}
-	}
-
-	return nil
-}
-
 func (o *Object) decodeMetaDataFromBlob(info *azblob.BlobItemInternal) (err error) {
 	metadata := info.Metadata
 	size := *info.Properties.ContentLength
@@ -1461,10 +1402,6 @@ func (o *Object) clearMetaData() {
 //  o.size
 //  o.md5
 func (o *Object) readMetaData() (err error) {
-	container, _ := o.split()
-	if !o.fs.containerOK(container) {
-		return fs.ErrorObjectNotFound
-	}
 	if !o.modTime.IsZero() {
 		return nil
 	}
@@ -1531,7 +1468,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 	var offset int64
 	var count int64
 	if o.AccessTier() == azblob.AccessTierArchive {
-		return nil, fmt.Errorf("Blob in archive tier, you need to set tier to hot or cool first")
+		return nil, errors.Errorf("Blob in archive tier, you need to set tier to hot or cool first")
 	}
 	fs.FixRangeOption(options, o.size)
 	for _, option := range options {
@@ -1557,11 +1494,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 		return o.fs.shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to open for download: %w", err)
-	}
-	err = o.decodeMetaDataFromDownloadResponse(downloadResponse)
-	if err != nil {
-		return nil, fmt.Errorf("failed to decode metadata for download: %w", err)
+		return nil, errors.Wrap(err, "failed to open for download")
 	}
 	in = downloadResponse.Body(azblob.RetryReaderOptions{})
 	return in, nil
@@ -1651,16 +1584,13 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 			fs.Debugf(o, "deleting archive tier blob before updating")
 			err = o.Remove(ctx)
 			if err != nil {
-				return fmt.Errorf("failed to delete archive blob before updating: %w", err)
+				return errors.Wrap(err, "failed to delete archive blob before updating")
 			}
 		} else {
 			return errCantUpdateArchiveTierBlobs
 		}
 	}
-	container, containerPath := o.split()
-	if container == "" || containerPath == "" {
-		return fmt.Errorf("can't upload to root - need a container")
-	}
+	container, _ := o.split()
 	err = o.fs.makeContainer(ctx, container)
 	if err != nil {
 		return err
@@ -1691,10 +1621,10 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op

 	putBlobOptions := azblob.UploadStreamToBlockBlobOptions{
 		BufferSize:      int(o.fs.opt.ChunkSize),
-		MaxBuffers:      o.fs.opt.UploadConcurrency,
+		MaxBuffers:      uploadConcurrency,
 		Metadata:        o.meta,
 		BlobHTTPHeaders: httpHeaders,
-		TransferManager: o.fs.newPoolWrapper(o.fs.opt.UploadConcurrency),
+		TransferManager: o.fs.newPoolWrapper(uploadConcurrency),
 	}

 	// Don't retry, return a retry error instead
@@ -1747,7 +1677,7 @@ func (o *Object) AccessTier() azblob.AccessTierType {
 // SetTier performs changing object tier
 func (o *Object) SetTier(tier string) error {
 	if !validateAccessTier(tier) {
-		return fmt.Errorf("Tier %s not supported by Azure Blob Storage", tier)
+		return errors.Errorf("Tier %s not supported by Azure Blob Storage", tier)
 	}

 	// Check if current tier already matches with desired tier
@@ -1763,7 +1693,7 @@ func (o *Object) SetTier(tier string) error {
 	})

 	if err != nil {
-		return fmt.Errorf("Failed to set Blob Tier: %w", err)
+		return errors.Wrap(err, "Failed to set Blob Tier")
 	}

 	// Set access tier on local object also, this typically
--- a/backend/azureblob/azureblob_internal_test.go
+++ b/backend/azureblob/azureblob_internal_test.go
@@ -1,5 +1,4 @@
-//go:build !plan9 && !solaris && !js
-// +build !plan9,!solaris,!js
+// +build !plan9,!solaris,!js,go1.14

 package azureblob

--- a/backend/azureblob/azureblob_test.go
+++ b/backend/azureblob/azureblob_test.go
@@ -1,7 +1,6 @@
 // Test AzureBlob filesystem interface

-//go:build !plan9 && !solaris && !js
-// +build !plan9,!solaris,!js
+// +build !plan9,!solaris,!js,go1.14

 package azureblob

@@ -17,10 +16,12 @@ import (
 // TestIntegration runs integration tests against the remote
 func TestIntegration(t *testing.T) {
 	fstests.Run(t, &fstests.Opt{
-		RemoteName:    "TestAzureBlob:",
-		NilObject:     (*Object)(nil),
-		TiersToTest:   []string{"Hot", "Cool"},
-		ChunkedUpload: fstests.ChunkedUploadConfig{},
+		RemoteName:  "TestAzureBlob:",
+		NilObject:   (*Object)(nil),
+		TiersToTest: []string{"Hot", "Cool"},
+		ChunkedUpload: fstests.ChunkedUploadConfig{
+			MaxChunkSize: maxChunkSize,
+		},
 	})
 }

--- a/backend/azureblob/azureblob_unsupported.go
+++ b/backend/azureblob/azureblob_unsupported.go
@@ -1,7 +1,6 @@
 // Build for azureblob for unsupported platforms to stop go complaining
 // about "no buildable Go source files "

-//go:build plan9 || solaris || js
-// +build plan9 solaris js
+// +build plan9 solaris js !go1.14

 package azureblob
--- a/backend/azureblob/imds.go
+++ b/backend/azureblob/imds.go
@@ -1,5 +1,4 @@
-//go:build !plan9 && !solaris && !js
-// +build !plan9,!solaris,!js
+// +build !plan9,!solaris,!js,go1.14

 package azureblob

@@ -13,6 +12,7 @@ import (
 	"net/http"

 	"github.com/Azure/go-autorest/autorest/adal"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/fshttp"
 )
@@ -94,7 +94,7 @@ func GetMSIToken(ctx context.Context, identity *userMSI) (adal.Token, error) {
 	httpClient := fshttp.NewClient(ctx)
 	resp, err := httpClient.Do(req)
 	if err != nil {
-		return result, fmt.Errorf("MSI is not enabled on this VM: %w", err)
+		return result, errors.Wrap(err, "MSI is not enabled on this VM")
 	}
 	defer func() { // resp and Body should not be nil
 		_, err = io.Copy(ioutil.Discard, resp.Body)
@@ -119,7 +119,7 @@ func GetMSIToken(ctx context.Context, identity *userMSI) (adal.Token, error) {

 	b, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
-		return result, fmt.Errorf("Couldn't read IMDS response: %w", err)
+		return result, errors.Wrap(err, "Couldn't read IMDS response")
 	}
 	// Remove BOM, if any. azcopy does this so I'm following along.
 	b = bytes.TrimPrefix(b, []byte("\xef\xbb\xbf"))
@@ -130,7 +130,7 @@ func GetMSIToken(ctx context.Context, identity *userMSI) (adal.Token, error) {
 	// storage API call.
 	err = json.Unmarshal(b, &result)
 	if err != nil {
-		return result, fmt.Errorf("Couldn't unmarshal IMDS response: %w", err)
+		return result, errors.Wrap(err, "Couldn't unmarshal IMDS response")
 	}

 	return result, nil
--- a/backend/azureblob/imds_test.go
+++ b/backend/azureblob/imds_test.go
@@ -1,5 +1,4 @@
-//go:build !plan9 && !solaris && !js
-// +build !plan9,!solaris,!js
+// +build !plan9,!solaris,!js,go1.14

 package azureblob

--- a/backend/b2/b2.go
+++ b/backend/b2/b2.go
@@ -9,7 +9,6 @@ import (
 	"bytes"
 	"context"
 	"crypto/sha1"
-	"errors"
 	"fmt"
 	gohash "hash"
 	"io"
@@ -20,6 +19,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/b2/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
@@ -75,15 +75,15 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "account",
-			Help:     "Account ID or Application Key ID.",
+			Help:     "Account ID or Application Key ID",
 			Required: true,
 		}, {
 			Name:     "key",
-			Help:     "Application Key.",
+			Help:     "Application Key",
 			Required: true,
 		}, {
 			Name:     "endpoint",
-			Help:     "Endpoint for the service.\n\nLeave blank normally.",
+			Help:     "Endpoint for the service.\nLeave blank normally.",
 			Advanced: true,
 		}, {
 			Name: "test_mode",
@@ -103,7 +103,7 @@ in the [b2 integrations checklist](https://www.backblaze.com/b2/docs/integration
 			Advanced: true,
 		}, {
 			Name:     "versions",
-			Help:     "Include old versions in directory listings.\n\nNote that when using this no file write operations are permitted,\nso you can't upload files or delete them.",
+			Help:     "Include old versions in directory listings.\nNote that when using this no file write operations are permitted,\nso you can't upload files or delete them.",
 			Default:  false,
 			Advanced: true,
 		}, {
@@ -121,7 +121,7 @@ This value should be set no larger than 4.657 GiB (== 5 GB).`,
 			Advanced: true,
 		}, {
 			Name: "copy_cutoff",
-			Help: `Cutoff for switching to multipart copy.
+			Help: `Cutoff for switching to multipart copy

 Any files larger than this that need to be server-side copied will be
 copied in chunks of this size.
@@ -131,19 +131,17 @@ The minimum is 0 and the maximum is 4.6 GiB.`,
 			Advanced: true,
 		}, {
 			Name: "chunk_size",
-			Help: `Upload chunk size.
+			Help: `Upload chunk size. Must fit in memory.

-When uploading large files, chunk the file into this size.
-
-Must fit in memory. These chunks are buffered in memory and there
-might a maximum of "--transfers" chunks in progress at once.
-
-5,000,000 Bytes is the minimum size.`,
+When uploading large files, chunk the file into this size.  Note that
+these chunks are buffered in memory and there might a maximum of
+"--transfers" chunks in progress at once.  5,000,000 Bytes is the
+minimum size.`,
 			Default:  defaultChunkSize,
 			Advanced: true,
 		}, {
 			Name: "disable_checksum",
-			Help: `Disable checksums for large (> upload cutoff) files.
+			Help: `Disable checksums for large (> upload cutoff) files

 Normally rclone will calculate the SHA1 checksum of the input before
 uploading it so it can add it to metadata on the object. This is great
@@ -160,15 +158,7 @@ free egress for data downloaded through the Cloudflare network.
 Rclone works with private buckets by sending an "Authorization" header.
 If the custom endpoint rewrites the requests for authentication,
 e.g., in Cloudflare Workers, this header needs to be handled properly.
-Leave blank if you want to use the endpoint provided by Backblaze.
-
-The URL provided here SHOULD have the protocol and SHOULD NOT have
-a trailing slash or specify the /file/bucket subpath as rclone will
-request files with "{download_url}/file/{bucket_name}/{path}".
-
-Example:
-> https://mysubdomain.mydomain.tld
-(No trailing "/", "file" or "bucket")`,
+Leave blank if you want to use the endpoint provided by Backblaze.`,
 			Advanced: true,
 		}, {
 			Name: "download_auth_duration",
@@ -374,7 +364,7 @@ func errorHandler(resp *http.Response) error {

 func checkUploadChunkSize(cs fs.SizeSuffix) error {
 	if cs < minChunkSize {
-		return fmt.Errorf("%s is less than %s", cs, minChunkSize)
+		return errors.Errorf("%s is less than %s", cs, minChunkSize)
 	}
 	return nil
 }
@@ -389,7 +379,7 @@ func (f *Fs) setUploadChunkSize(cs fs.SizeSuffix) (old fs.SizeSuffix, err error)

 func checkUploadCutoff(opt *Options, cs fs.SizeSuffix) error {
 	if cs < opt.ChunkSize {
-		return fmt.Errorf("%v is less than chunk size %v", cs, opt.ChunkSize)
+		return errors.Errorf("%v is less than chunk size %v", cs, opt.ChunkSize)
 	}
 	return nil
 }
@@ -422,11 +412,11 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 	err = checkUploadCutoff(opt, opt.UploadCutoff)
 	if err != nil {
-		return nil, fmt.Errorf("b2: upload cutoff: %w", err)
+		return nil, errors.Wrap(err, "b2: upload cutoff")
 	}
 	err = checkUploadChunkSize(opt.ChunkSize)
 	if err != nil {
-		return nil, fmt.Errorf("b2: chunk size: %w", err)
+		return nil, errors.Wrap(err, "b2: chunk size")
 	}
 	if opt.Account == "" {
 		return nil, errors.New("account not found")
@@ -471,7 +461,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 	err = f.authorizeAccount(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("failed to authorize account: %w", err)
+		return nil, errors.Wrap(err, "failed to authorize account")
 	}
 	// If this is a key limited to a single bucket, it must exist already
 	if f.rootBucket != "" && f.info.Allowed.BucketID != "" {
@@ -480,7 +470,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 			return nil, errors.New("bucket that application key is restricted to no longer exists")
 		}
 		if allowedBucket != f.rootBucket {
-			return nil, fmt.Errorf("you must use bucket %q with this application key", allowedBucket)
+			return nil, errors.Errorf("you must use bucket %q with this application key", allowedBucket)
 		}
 		f.cache.MarkOK(f.rootBucket)
 		f.setBucketID(f.rootBucket, f.info.Allowed.BucketID)
@@ -520,7 +510,7 @@ func (f *Fs) authorizeAccount(ctx context.Context) error {
 		return f.shouldRetryNoReauth(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("failed to authenticate: %w", err)
+		return errors.Wrap(err, "failed to authenticate")
 	}
 	f.srv.SetRoot(f.info.APIURL+"/b2api/v1").SetHeader("Authorization", f.info.AuthorizationToken)
 	return nil
@@ -566,7 +556,7 @@ func (f *Fs) getUploadURL(ctx context.Context, bucket string) (upload *api.GetUp
 		return f.shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to get upload URL: %w", err)
+		return nil, errors.Wrap(err, "failed to get upload URL")
 	}
 	return upload, nil
 }
@@ -1056,7 +1046,7 @@ func (f *Fs) makeBucket(ctx context.Context, bucket string) error {
 					}
 				}
 			}
-			return fmt.Errorf("failed to create bucket: %w", err)
+			return errors.Wrap(err, "failed to create bucket")
 		}
 		f.setBucketID(bucket, response.ID)
 		f.setBucketType(bucket, response.Type)
@@ -1091,7 +1081,7 @@ func (f *Fs) Rmdir(ctx context.Context, dir string) error {
 			return f.shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return fmt.Errorf("failed to delete bucket: %w", err)
+			return errors.Wrap(err, "failed to delete bucket")
 		}
 		f.clearBucketID(bucket)
 		f.clearBucketType(bucket)
@@ -1132,7 +1122,7 @@ func (f *Fs) hide(ctx context.Context, bucket, bucketPath string) error {
 				return nil
 			}
 		}
-		return fmt.Errorf("failed to hide %q: %w", bucketPath, err)
+		return errors.Wrapf(err, "failed to hide %q", bucketPath)
 	}
 	return nil
 }
@@ -1153,7 +1143,7 @@ func (f *Fs) deleteByID(ctx context.Context, ID, Name string) error {
 		return f.shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("failed to delete %q: %w", Name, err)
+		return errors.Wrapf(err, "failed to delete %q", Name)
 	}
 	return nil
 }
@@ -1372,7 +1362,7 @@ func (f *Fs) getDownloadAuthorization(ctx context.Context, bucket, remote string
 		return f.shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return "", fmt.Errorf("failed to get download authorization: %w", err)
+		return "", errors.Wrap(err, "failed to get download authorization")
 	}
 	return response.AuthorizationToken, nil
 }
@@ -1677,14 +1667,14 @@ func (file *openFile) Close() (err error) {

 	// Check to see we read the correct number of bytes
 	if file.o.Size() != file.bytes {
-		return fmt.Errorf("object corrupted on transfer - length mismatch (want %d got %d)", file.o.Size(), file.bytes)
+		return errors.Errorf("object corrupted on transfer - length mismatch (want %d got %d)", file.o.Size(), file.bytes)
 	}

 	// Check the SHA1
 	receivedSHA1 := file.o.sha1
 	calculatedSHA1 := fmt.Sprintf("%x", file.hash.Sum(nil))
 	if receivedSHA1 != "" && receivedSHA1 != calculatedSHA1 {
-		return fmt.Errorf("object corrupted on transfer - SHA1 mismatch (want %q got %q)", receivedSHA1, calculatedSHA1)
+		return errors.Errorf("object corrupted on transfer - SHA1 mismatch (want %q got %q)", receivedSHA1, calculatedSHA1)
 	}

 	return nil
@@ -1724,7 +1714,7 @@ func (o *Object) getOrHead(ctx context.Context, method string, options []fs.Open
 		if resp != nil && (resp.StatusCode == http.StatusNotFound || resp.StatusCode == http.StatusBadRequest) {
 			return nil, nil, fs.ErrorObjectNotFound
 		}
-		return nil, nil, fmt.Errorf("failed to %s for download: %w", method, err)
+		return nil, nil, errors.Wrapf(err, "failed to %s for download", method)
 	}

 	// NB resp may be Open here - don't return err != nil without closing
--- a/backend/b2/upload.go
+++ b/backend/b2/upload.go
@@ -15,6 +15,7 @@ import (
 	"strings"
 	"sync"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/b2/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
@@ -101,7 +102,7 @@ func (f *Fs) newLargeUpload(ctx context.Context, o *Object, in io.Reader, src fs
 			parts++
 		}
 		if parts > maxParts {
-			return nil, fmt.Errorf("%q too big (%d bytes) makes too many parts %d > %d - increase --b2-chunk-size", remote, size, parts, maxParts)
+			return nil, errors.Errorf("%q too big (%d bytes) makes too many parts %d > %d - increase --b2-chunk-size", remote, size, parts, maxParts)
 		}
 		sha1SliceSize = parts
 	}
@@ -184,7 +185,7 @@ func (up *largeUpload) getUploadURL(ctx context.Context) (upload *api.GetUploadP
 			return up.f.shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return nil, fmt.Errorf("failed to get upload URL: %w", err)
+			return nil, errors.Wrap(err, "failed to get upload URL")
 		}
 	} else {
 		upload, up.uploads = up.uploads[0], up.uploads[1:]
@@ -405,7 +406,7 @@ func (up *largeUpload) Stream(ctx context.Context, initialUploadBlock []byte) (e
 			up.size += int64(n)
 			if part > maxParts {
 				up.f.putBuf(buf, false)
-				return fmt.Errorf("%q too big (%d bytes so far) makes too many parts %d > %d - increase --b2-chunk-size", up.o, up.size, up.parts, maxParts)
+				return errors.Errorf("%q too big (%d bytes so far) makes too many parts %d > %d - increase --b2-chunk-size", up.o, up.size, up.parts, maxParts)
 			}

 			part := part // for the closure
--- a/backend/box/api/types.go
+++ b/backend/box/api/types.go
@@ -61,7 +61,7 @@ func (e *Error) Error() string {
 var _ error = (*Error)(nil)

 // ItemFields are the fields needed for FileInfo
-var ItemFields = "type,id,sequence_id,etag,sha1,name,size,created_at,modified_at,content_created_at,content_modified_at,item_status,shared_link,owned_by"
+var ItemFields = "type,id,sequence_id,etag,sha1,name,size,created_at,modified_at,content_created_at,content_modified_at,item_status,shared_link"

 // Types of things in Item
 const (
@@ -90,12 +90,6 @@ type Item struct {
 		URL    string `json:"url,omitempty"`
 		Access string `json:"access,omitempty"`
 	} `json:"shared_link"`
-	OwnedBy struct {
-		Type  string `json:"type"`
-		ID    string `json:"id"`
-		Name  string `json:"name"`
-		Login string `json:"login"`
-	} `json:"owned_by"`
 }

 // ModTime returns the modification time of the item
@@ -109,11 +103,10 @@ func (i *Item) ModTime() (t time.Time) {

 // FolderItems is returned from the GetFolderItems call
 type FolderItems struct {
-	TotalCount int     `json:"total_count"`
-	Entries    []Item  `json:"entries"`
-	Offset     int     `json:"offset"`
-	Limit      int     `json:"limit"`
-	NextMarker *string `json:"next_marker,omitempty"`
+	TotalCount int    `json:"total_count"`
+	Entries    []Item `json:"entries"`
+	Offset     int    `json:"offset"`
+	Limit      int    `json:"limit"`
 	Order      []struct {
 		By        string `json:"by"`
 		Direction string `json:"direction"`
--- a/backend/box/box.go
+++ b/backend/box/box.go
@@ -14,7 +14,6 @@ import (
 	"crypto/rsa"
 	"encoding/json"
 	"encoding/pem"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -23,10 +22,15 @@ import (
 	"path"
 	"strconv"
 	"strings"
-	"sync"
-	"sync/atomic"
 	"time"

+	"github.com/rclone/rclone/lib/encoder"
+	"github.com/rclone/rclone/lib/env"
+	"github.com/rclone/rclone/lib/jwtutil"
+
+	"github.com/youmark/pkcs8"
+
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/box/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
@@ -37,13 +41,9 @@ import (
 	"github.com/rclone/rclone/fs/fshttp"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/lib/dircache"
-	"github.com/rclone/rclone/lib/encoder"
-	"github.com/rclone/rclone/lib/env"
-	"github.com/rclone/rclone/lib/jwtutil"
 	"github.com/rclone/rclone/lib/oauthutil"
 	"github.com/rclone/rclone/lib/pacer"
 	"github.com/rclone/rclone/lib/rest"
-	"github.com/youmark/pkcs8"
 	"golang.org/x/oauth2"
 	"golang.org/x/oauth2/jws"
 )
@@ -56,6 +56,7 @@ const (
 	decayConstant               = 2 // bigger for slower decay, exponential
 	rootURL                     = "https://api.box.com/2.0"
 	uploadURL                   = "https://upload.box.com/api/2.0"
+	listChunks                  = 1000     // chunk size to read directory listings
 	minUploadCutoff             = 50000000 // upload cutoff can be no lower than this
 	defaultUploadCutoff         = 50 * 1024 * 1024
 	tokenURL                    = "https://api.box.com/oauth2/token"
@@ -91,7 +92,7 @@ func init() {
 			if ok && boxSubTypeOk && jsonFile != "" && boxSubType != "" {
 				err = refreshJWTToken(ctx, jsonFile, boxSubType, name, m)
 				if err != nil {
-					return nil, fmt.Errorf("failed to configure token with jwt authentication: %w", err)
+					return nil, errors.Wrap(err, "failed to configure token with jwt authentication")
 				}
 				// Else, if not using an access token, use oauth2
 			} else if boxAccessToken == "" || !boxAccessTokenOk {
@@ -108,19 +109,19 @@ func init() {
 			Advanced: true,
 		}, {
 			Name: "box_config_file",
-			Help: "Box App config.json location\n\nLeave blank normally." + env.ShellExpandHelp,
+			Help: "Box App config.json location\nLeave blank normally." + env.ShellExpandHelp,
 		}, {
 			Name: "access_token",
-			Help: "Box App Primary Access Token\n\nLeave blank normally.",
+			Help: "Box App Primary Access Token\nLeave blank normally.",
 		}, {
 			Name:    "box_sub_type",
 			Default: "user",
 			Examples: []fs.OptionExample{{
 				Value: "user",
-				Help:  "Rclone should act on behalf of a user.",
+				Help:  "Rclone should act on behalf of a user",
 			}, {
 				Value: "enterprise",
-				Help:  "Rclone should act on behalf of a service account.",
+				Help:  "Rclone should act on behalf of a service account",
 			}},
 		}, {
 			Name:     "upload_cutoff",
@@ -132,16 +133,6 @@ func init() {
 			Help:     "Max number of times to try committing a multipart file.",
 			Default:  100,
 			Advanced: true,
-		}, {
-			Name:     "list_chunk",
-			Default:  1000,
-			Help:     "Size of listing chunk 1-1000.",
-			Advanced: true,
-		}, {
-			Name:     "owned_by",
-			Default:  "",
-			Help:     "Only show items owned by the login (email address) passed in.",
-			Advanced: true,
 		}, {
 			Name:     config.ConfigEncoding,
 			Help:     config.ConfigEncodingHelp,
@@ -165,15 +156,15 @@ func refreshJWTToken(ctx context.Context, jsonFile string, boxSubType string, na
 	jsonFile = env.ShellExpand(jsonFile)
 	boxConfig, err := getBoxConfig(jsonFile)
 	if err != nil {
-		return fmt.Errorf("get box config: %w", err)
+		return errors.Wrap(err, "get box config")
 	}
 	privateKey, err := getDecryptedPrivateKey(boxConfig)
 	if err != nil {
-		return fmt.Errorf("get decrypted private key: %w", err)
+		return errors.Wrap(err, "get decrypted private key")
 	}
 	claims, err := getClaims(boxConfig, boxSubType)
 	if err != nil {
-		return fmt.Errorf("get claims: %w", err)
+		return errors.Wrap(err, "get claims")
 	}
 	signingHeaders := getSigningHeaders(boxConfig)
 	queryParams := getQueryParams(boxConfig)
@@ -185,11 +176,11 @@ func refreshJWTToken(ctx context.Context, jsonFile string, boxSubType string, na
 func getBoxConfig(configFile string) (boxConfig *api.ConfigJSON, err error) {
 	file, err := ioutil.ReadFile(configFile)
 	if err != nil {
-		return nil, fmt.Errorf("box: failed to read Box config: %w", err)
+		return nil, errors.Wrap(err, "box: failed to read Box config")
 	}
 	err = json.Unmarshal(file, &boxConfig)
 	if err != nil {
-		return nil, fmt.Errorf("box: failed to parse Box config: %w", err)
+		return nil, errors.Wrap(err, "box: failed to parse Box config")
 	}
 	return boxConfig, nil
 }
@@ -197,7 +188,7 @@ func getBoxConfig(configFile string) (boxConfig *api.ConfigJSON, err error) {
 func getClaims(boxConfig *api.ConfigJSON, boxSubType string) (claims *jws.ClaimSet, err error) {
 	val, err := jwtutil.RandomHex(20)
 	if err != nil {
-		return nil, fmt.Errorf("box: failed to generate random string for jti: %w", err)
+		return nil, errors.Wrap(err, "box: failed to generate random string for jti")
 	}

 	claims = &jws.ClaimSet{
@@ -238,12 +229,12 @@ func getDecryptedPrivateKey(boxConfig *api.ConfigJSON) (key *rsa.PrivateKey, err

 	block, rest := pem.Decode([]byte(boxConfig.BoxAppSettings.AppAuth.PrivateKey))
 	if len(rest) > 0 {
-		return nil, fmt.Errorf("box: extra data included in private key: %w", err)
+		return nil, errors.Wrap(err, "box: extra data included in private key")
 	}

 	rsaKey, err := pkcs8.ParsePKCS8PrivateKey(block.Bytes, []byte(boxConfig.BoxAppSettings.AppAuth.Passphrase))
 	if err != nil {
-		return nil, fmt.Errorf("box: failed to decrypt private key: %w", err)
+		return nil, errors.Wrap(err, "box: failed to decrypt private key")
 	}

 	return rsaKey.(*rsa.PrivateKey), nil
@@ -256,8 +247,6 @@ type Options struct {
 	Enc           encoder.MultiEncoder `config:"encoding"`
 	RootFolderID  string               `config:"root_folder_id"`
 	AccessToken   string               `config:"access_token"`
-	ListChunk     int                  `config:"list_chunk"`
-	OwnedBy       string               `config:"owned_by"`
 }

 // Fs represents a remote box
@@ -337,13 +326,6 @@ func shouldRetry(ctx context.Context, resp *http.Response, err error) (bool, err
 		authRetry = true
 		fs.Debugf(nil, "Should retry: %v", err)
 	}
-
-	// Box API errors which should be retries
-	if apiErr, ok := err.(*api.Error); ok && apiErr.Code == "operation_blocked_temporary" {
-		fs.Debugf(nil, "Retrying API error %v", err)
-		return true, err
-	}
-
 	return authRetry || fserrors.ShouldRetry(err) || fserrors.ShouldRetryHTTP(resp, retryErrorCodes), err
 }

@@ -358,7 +340,7 @@ func (f *Fs) readMetaDataForPath(ctx context.Context, path string) (info *api.It
 		return nil, err
 	}

-	found, err := f.listAll(ctx, directoryID, false, true, true, func(item *api.Item) bool {
+	found, err := f.listAll(ctx, directoryID, false, true, func(item *api.Item) bool {
 		if strings.EqualFold(item.Name, leaf) {
 			info = item
 			return true
@@ -401,7 +383,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}

 	if opt.UploadCutoff < minUploadCutoff {
-		return nil, fmt.Errorf("box: upload cutoff (%v) must be greater than equal to %v", opt.UploadCutoff, fs.SizeSuffix(minUploadCutoff))
+		return nil, errors.Errorf("box: upload cutoff (%v) must be greater than equal to %v", opt.UploadCutoff, fs.SizeSuffix(minUploadCutoff))
 	}

 	root = parsePath(root)
@@ -412,7 +394,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	if opt.AccessToken == "" {
 		client, ts, err = oauthutil.NewClient(ctx, name, m, oauthConfig)
 		if err != nil {
-			return nil, fmt.Errorf("failed to configure Box: %w", err)
+			return nil, errors.Wrap(err, "failed to configure Box")
 		}
 	}

@@ -533,7 +515,7 @@ func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
 // FindLeaf finds a directory of name leaf in the folder with ID pathID
 func (f *Fs) FindLeaf(ctx context.Context, pathID, leaf string) (pathIDOut string, found bool, err error) {
 	// Find the leaf in pathID
-	found, err = f.listAll(ctx, pathID, true, false, true, func(item *api.Item) bool {
+	found, err = f.listAll(ctx, pathID, true, false, func(item *api.Item) bool {
 		if strings.EqualFold(item.Name, leaf) {
 			pathIDOut = item.ID
 			return true
@@ -589,20 +571,17 @@ type listAllFn func(*api.Item) bool
 // Lists the directory required calling the user function on each item found
 //
 // If the user fn ever returns true then it early exits with found = true
-func (f *Fs) listAll(ctx context.Context, dirID string, directoriesOnly bool, filesOnly bool, activeOnly bool, fn listAllFn) (found bool, err error) {
+func (f *Fs) listAll(ctx context.Context, dirID string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) {
 	opts := rest.Opts{
 		Method:     "GET",
 		Path:       "/folders/" + dirID + "/items",
 		Parameters: fieldsValue(),
 	}
-	opts.Parameters.Set("limit", strconv.Itoa(f.opt.ListChunk))
-	opts.Parameters.Set("usemarker", "true")
-	var marker *string
+	opts.Parameters.Set("limit", strconv.Itoa(listChunks))
+	offset := 0
 OUTER:
 	for {
-		if marker != nil {
-			opts.Parameters.Set("marker", *marker)
-		}
+		opts.Parameters.Set("offset", strconv.Itoa(offset))

 		var result api.FolderItems
 		var resp *http.Response
@@ -611,7 +590,7 @@ OUTER:
 			return shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return found, fmt.Errorf("couldn't list files: %w", err)
+			return found, errors.Wrap(err, "couldn't list files")
 		}
 		for i := range result.Entries {
 			item := &result.Entries[i]
@@ -627,10 +606,7 @@ OUTER:
 				fs.Debugf(f, "Ignoring %q - unknown type %q", item.Name, item.Type)
 				continue
 			}
-			if activeOnly && item.ItemStatus != api.ItemStatusActive {
-				continue
-			}
-			if f.opt.OwnedBy != "" && f.opt.OwnedBy != item.OwnedBy.Login {
+			if item.ItemStatus != api.ItemStatusActive {
 				continue
 			}
 			item.Name = f.opt.Enc.ToStandardName(item.Name)
@@ -639,8 +615,8 @@ OUTER:
 				break OUTER
 			}
 		}
-		marker = result.NextMarker
-		if marker == nil {
+		offset += result.Limit
+		if offset >= result.TotalCount {
 			break
 		}
 	}
@@ -662,7 +638,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 		return nil, err
 	}
 	var iErr error
-	_, err = f.listAll(ctx, directoryID, false, false, true, func(info *api.Item) bool {
+	_, err = f.listAll(ctx, directoryID, false, false, func(info *api.Item) bool {
 		remote := path.Join(dir, info.Name)
 		if info.Type == api.ItemTypeFolder {
 			// cache the directory ID for later lookups
@@ -738,14 +714,14 @@ func (f *Fs) preUploadCheck(ctx context.Context, leaf, directoryID string, size
 			var conflict api.PreUploadCheckConflict
 			err = json.Unmarshal(apiErr.ContextInfo, &conflict)
 			if err != nil {
-				return "", fmt.Errorf("pre-upload check: JSON decode failed: %w", err)
+				return "", errors.Wrap(err, "pre-upload check: JSON decode failed")
 			}
 			if conflict.Conflicts.Type != api.ItemTypeFile {
-				return "", fmt.Errorf("pre-upload check: can't overwrite non file with file: %w", err)
+				return "", errors.Wrap(err, "pre-upload check: can't overwrite non file with file")
 			}
 			return conflict.Conflicts.ID, nil
 		}
-		return "", fmt.Errorf("pre-upload check: %w", err)
+		return "", errors.Wrap(err, "pre-upload check")
 	}
 	return "", nil
 }
@@ -854,7 +830,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("rmdir failed: %w", err)
+		return errors.Wrap(err, "rmdir failed")
 	}
 	f.dirCache.FlushDir(dir)
 	if err != nil {
@@ -898,7 +874,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	srcPath := srcObj.fs.rootSlash() + srcObj.remote
 	dstPath := f.rootSlash() + remote
 	if strings.ToLower(srcPath) == strings.ToLower(dstPath) {
-		return nil, fmt.Errorf("can't copy %q -> %q as are same name when lowercase", srcPath, dstPath)
+		return nil, errors.Errorf("can't copy %q -> %q as are same name when lowercase", srcPath, dstPath)
 	}

 	// Create temporary object
@@ -982,7 +958,7 @@ func (f *Fs) About(ctx context.Context) (usage *fs.Usage, err error) {
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to read user info: %w", err)
+		return nil, errors.Wrap(err, "failed to read user info")
 	}
 	// FIXME max upload size would be useful to use in Update
 	usage = &fs.Usage{
@@ -1116,36 +1092,45 @@ func (f *Fs) deletePermanently(ctx context.Context, itemType, id string) error {

 // CleanUp empties the trash
 func (f *Fs) CleanUp(ctx context.Context) (err error) {
-	var (
-		deleteErrors       = int64(0)
-		concurrencyControl = make(chan struct{}, fs.GetConfig(ctx).Checkers)
-		wg                 sync.WaitGroup
-	)
-	_, err = f.listAll(ctx, "trash", false, false, false, func(item *api.Item) bool {
-		if item.Type == api.ItemTypeFolder || item.Type == api.ItemTypeFile {
-			wg.Add(1)
-			concurrencyControl <- struct{}{}
-			go func() {
-				defer func() {
-					<-concurrencyControl
-					wg.Done()
-				}()
+	opts := rest.Opts{
+		Method: "GET",
+		Path:   "/folders/trash/items",
+		Parameters: url.Values{
+			"fields": []string{"type", "id"},
+		},
+	}
+	opts.Parameters.Set("limit", strconv.Itoa(listChunks))
+	offset := 0
+	for {
+		opts.Parameters.Set("offset", strconv.Itoa(offset))
+
+		var result api.FolderItems
+		var resp *http.Response
+		err = f.pacer.Call(func() (bool, error) {
+			resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
+			return shouldRetry(ctx, resp, err)
+		})
+		if err != nil {
+			return errors.Wrap(err, "couldn't list trash")
+		}
+		for i := range result.Entries {
+			item := &result.Entries[i]
+			if item.Type == api.ItemTypeFolder || item.Type == api.ItemTypeFile {
 				err := f.deletePermanently(ctx, item.Type, item.ID)
 				if err != nil {
-					fs.Errorf(f, "failed to delete trash item %q (%q): %v", item.Name, item.ID, err)
-					atomic.AddInt64(&deleteErrors, 1)
+					return errors.Wrap(err, "failed to delete file")
 				}
-			}()
-		} else {
-			fs.Debugf(f, "Ignoring %q - unknown type %q", item.Name, item.Type)
+			} else {
+				fs.Debugf(f, "Ignoring %q - unknown type %q", item.Name, item.Type)
+				continue
+			}
+		}
+		offset += result.Limit
+		if offset >= result.TotalCount {
+			break
 		}
-		return false
-	})
-	wg.Wait()
-	if deleteErrors != 0 {
-		return fmt.Errorf("failed to delete %d trash items", deleteErrors)
 	}
-	return err
+	return
 }

 // DirCacheFlush resets the directory cache - used in testing as an
@@ -1199,11 +1184,8 @@ func (o *Object) Size() int64 {

 // setMetaData sets the metadata from info
 func (o *Object) setMetaData(info *api.Item) (err error) {
-	if info.Type == api.ItemTypeFolder {
-		return fs.ErrorIsDir
-	}
 	if info.Type != api.ItemTypeFile {
-		return fmt.Errorf("%q is %q: %w", o.remote, info.Type, fs.ErrorNotAFile)
+		return errors.Wrapf(fs.ErrorNotAFile, "%q is %q", o.remote, info.Type)
 	}
 	o.hasMetaData = true
 	o.size = int64(info.Size)
@@ -1339,7 +1321,7 @@ func (o *Object) upload(ctx context.Context, in io.Reader, leaf, directoryID str
 		return err
 	}
 	if result.TotalCount != 1 || len(result.Entries) != 1 {
-		return fmt.Errorf("failed to upload %v - not sure why", o)
+		return errors.Errorf("failed to upload %v - not sure why", o)
 	}
 	return o.setMetaData(&result.Entries[0])
 }
--- a/backend/box/upload.go
+++ b/backend/box/upload.go
@@ -8,7 +8,6 @@ import (
 	"crypto/sha1"
 	"encoding/base64"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -16,6 +15,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/box/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
@@ -140,7 +140,7 @@ outer:
 					}
 				}
 			default:
-				return nil, fmt.Errorf("unknown HTTP status return %q (%d)", resp.Status, resp.StatusCode)
+				return nil, errors.Errorf("unknown HTTP status return %q (%d)", resp.Status, resp.StatusCode)
 			}
 		}
 		fs.Debugf(o, "commit multipart upload failed %d/%d - trying again in %d seconds (%s)", tries+1, maxTries, delay, why)
@@ -151,7 +151,7 @@ outer:
 	}
 	err = json.Unmarshal(body, &result)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't decode commit response: %q: %w", body, err)
+		return nil, errors.Wrapf(err, "couldn't decode commit response: %q", body)
 	}
 	return result, nil
 }
@@ -177,7 +177,7 @@ func (o *Object) uploadMultipart(ctx context.Context, in io.Reader, leaf, direct
 	// Create upload session
 	session, err := o.createUploadSession(ctx, leaf, directoryID, size)
 	if err != nil {
-		return fmt.Errorf("multipart upload create session failed: %w", err)
+		return errors.Wrap(err, "multipart upload create session failed")
 	}
 	chunkSize := session.PartSize
 	fs.Debugf(o, "Multipart upload session started for %d parts of size %v", session.TotalParts, fs.SizeSuffix(chunkSize))
@@ -222,7 +222,7 @@ outer:
 		// Read the chunk
 		_, err = io.ReadFull(in, buf)
 		if err != nil {
-			err = fmt.Errorf("multipart upload failed to read source: %w", err)
+			err = errors.Wrap(err, "multipart upload failed to read source")
 			break outer
 		}

@@ -238,7 +238,7 @@ outer:
 			fs.Debugf(o, "Uploading part %d/%d offset %v/%v part size %v", part+1, session.TotalParts, fs.SizeSuffix(position), fs.SizeSuffix(size), fs.SizeSuffix(chunkSize))
 			partResponse, err := o.uploadPart(ctx, session.ID, position, size, buf, wrap, options...)
 			if err != nil {
-				err = fmt.Errorf("multipart upload failed to upload part: %w", err)
+				err = errors.Wrap(err, "multipart upload failed to upload part")
 				select {
 				case errs <- err:
 				default:
@@ -266,11 +266,11 @@ outer:
 	// Finalise the upload session
 	result, err := o.commitUpload(ctx, session.ID, parts, modTime, hash.Sum(nil))
 	if err != nil {
-		return fmt.Errorf("multipart upload failed to finalize: %w", err)
+		return errors.Wrap(err, "multipart upload failed to finalize")
 	}

 	if result.TotalCount != 1 || len(result.Entries) != 1 {
-		return fmt.Errorf("multipart upload failed %v - not sure why", o)
+		return errors.Errorf("multipart upload failed %v - not sure why", o)
 	}
 	return o.setMetaData(&result.Entries[0])
 }
--- a/backend/cache/cache.go
+++ b/backend/cache/cache.go
@@ -1,11 +1,9 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache

 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"math"
@@ -20,6 +18,7 @@ import (
 	"syscall"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/crypt"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/cache"
@@ -69,26 +68,26 @@ func init() {
 		CommandHelp: commandHelp,
 		Options: []fs.Option{{
 			Name:     "remote",
-			Help:     "Remote to cache.\n\nNormally should contain a ':' and a path, e.g. \"myremote:path/to/dir\",\n\"myremote:bucket\" or maybe \"myremote:\" (not recommended).",
+			Help:     "Remote to cache.\nNormally should contain a ':' and a path, e.g. \"myremote:path/to/dir\",\n\"myremote:bucket\" or maybe \"myremote:\" (not recommended).",
 			Required: true,
 		}, {
 			Name: "plex_url",
-			Help: "The URL of the Plex server.",
+			Help: "The URL of the Plex server",
 		}, {
 			Name: "plex_username",
-			Help: "The username of the Plex user.",
+			Help: "The username of the Plex user",
 		}, {
 			Name:       "plex_password",
-			Help:       "The password of the Plex user.",
+			Help:       "The password of the Plex user",
 			IsPassword: true,
 		}, {
 			Name:     "plex_token",
-			Help:     "The plex token for authentication - auto set normally.",
+			Help:     "The plex token for authentication - auto set normally",
 			Hide:     fs.OptionHideBoth,
 			Advanced: true,
 		}, {
 			Name:     "plex_insecure",
-			Help:     "Skip all certificate verification when connecting to the Plex server.",
+			Help:     "Skip all certificate verification when connecting to the Plex server",
 			Advanced: true,
 		}, {
 			Name: "chunk_size",
@@ -143,12 +142,12 @@ oldest chunks until it goes under this value.`,
 			}},
 		}, {
 			Name:     "db_path",
-			Default:  filepath.Join(config.GetCacheDir(), "cache-backend"),
-			Help:     "Directory to store file structure metadata DB.\n\nThe remote name is used as the DB file name.",
+			Default:  filepath.Join(config.CacheDir, "cache-backend"),
+			Help:     "Directory to store file structure metadata DB.\nThe remote name is used as the DB file name.",
 			Advanced: true,
 		}, {
 			Name:    "chunk_path",
-			Default: filepath.Join(config.GetCacheDir(), "cache-backend"),
+			Default: filepath.Join(config.CacheDir, "cache-backend"),
 			Help: `Directory to cache chunk files.

 Path to where partial file data (chunks) are stored locally. The remote
@@ -168,7 +167,6 @@ then "--cache-chunk-path" will use the same path as "--cache-db-path".`,
 			Name:    "chunk_clean_interval",
 			Default: DefCacheChunkCleanInterval,
 			Help: `How often should the cache perform cleanups of the chunk storage.
-
 The default value should be ok for most people. If you find that the
 cache goes over "cache-chunk-total-size" too often then try to lower
 this value to force it to perform cleanups more often.`,
@@ -222,7 +220,7 @@ available on the local machine.`,
 		}, {
 			Name:    "rps",
 			Default: int(DefCacheRps),
-			Help: `Limits the number of requests per second to the source FS (-1 to disable).
+			Help: `Limits the number of requests per second to the source FS (-1 to disable)

 This setting places a hard limit on the number of requests per second
 that cache will be doing to the cloud provider remote and try to
@@ -243,7 +241,7 @@ still pass.`,
 		}, {
 			Name:    "writes",
 			Default: DefCacheWrites,
-			Help: `Cache file data on writes through the FS.
+			Help: `Cache file data on writes through the FS

 If you need to read files immediately after you upload them through
 cache you can enable this flag to have their data stored in the
@@ -264,7 +262,7 @@ provider`,
 		}, {
 			Name:    "tmp_wait_time",
 			Default: DefCacheTmpWaitTime,
-			Help: `How long should files be stored in local cache before being uploaded.
+			Help: `How long should files be stored in local cache before being uploaded

 This is the duration that a file must wait in the temporary location
 _cache-tmp-upload-path_ before it is selected for upload.
@@ -275,7 +273,7 @@ to start the upload if a queue formed for this purpose.`,
 		}, {
 			Name:    "db_wait_time",
 			Default: DefCacheDbWaitTime,
-			Help: `How long to wait for the DB to be available - 0 is unlimited.
+			Help: `How long to wait for the DB to be available - 0 is unlimited

 Only one process can have the DB open at any one time, so rclone waits
 for this duration for the DB to become available before it gives an
@@ -356,7 +354,7 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 		return nil, err
 	}
 	if opt.ChunkTotalSize < opt.ChunkSize*fs.SizeSuffix(opt.TotalWorkers) {
-		return nil, fmt.Errorf("don't set cache-chunk-total-size(%v) less than cache-chunk-size(%v) * cache-workers(%v)",
+		return nil, errors.Errorf("don't set cache-chunk-total-size(%v) less than cache-chunk-size(%v) * cache-workers(%v)",
 			opt.ChunkTotalSize, opt.ChunkSize, opt.TotalWorkers)
 	}

@@ -366,13 +364,13 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F

 	rpath, err := parseRootPath(rootPath)
 	if err != nil {
-		return nil, fmt.Errorf("failed to clean root path %q: %w", rootPath, err)
+		return nil, errors.Wrapf(err, "failed to clean root path %q", rootPath)
 	}

 	remotePath := fspath.JoinRootPath(opt.Remote, rootPath)
 	wrappedFs, wrapErr := cache.Get(ctx, remotePath)
 	if wrapErr != nil && wrapErr != fs.ErrorIsFile {
-		return nil, fmt.Errorf("failed to make remote %q to wrap: %w", remotePath, wrapErr)
+		return nil, errors.Wrapf(wrapErr, "failed to make remote %q to wrap", remotePath)
 	}
 	var fsErr error
 	fs.Debugf(name, "wrapped %v:%v at root %v", wrappedFs.Name(), wrappedFs.Root(), rpath)
@@ -401,7 +399,7 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 		if opt.PlexToken != "" {
 			f.plexConnector, err = newPlexConnectorWithToken(f, opt.PlexURL, opt.PlexToken, opt.PlexInsecure)
 			if err != nil {
-				return nil, fmt.Errorf("failed to connect to the Plex API %v: %w", opt.PlexURL, err)
+				return nil, errors.Wrapf(err, "failed to connect to the Plex API %v", opt.PlexURL)
 			}
 		} else {
 			if opt.PlexPassword != "" && opt.PlexUsername != "" {
@@ -413,7 +411,7 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 					m.Set("plex_token", token)
 				})
 				if err != nil {
-					return nil, fmt.Errorf("failed to connect to the Plex API %v: %w", opt.PlexURL, err)
+					return nil, errors.Wrapf(err, "failed to connect to the Plex API %v", opt.PlexURL)
 				}
 			}
 		}
@@ -422,8 +420,8 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 	dbPath := f.opt.DbPath
 	chunkPath := f.opt.ChunkPath
 	// if the dbPath is non default but the chunk path is default, we overwrite the last to follow the same one as dbPath
-	if dbPath != filepath.Join(config.GetCacheDir(), "cache-backend") &&
-		chunkPath == filepath.Join(config.GetCacheDir(), "cache-backend") {
+	if dbPath != filepath.Join(config.CacheDir, "cache-backend") &&
+		chunkPath == filepath.Join(config.CacheDir, "cache-backend") {
 		chunkPath = dbPath
 	}
 	if filepath.Ext(dbPath) != "" {
@@ -434,11 +432,11 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 	}
 	err = os.MkdirAll(dbPath, os.ModePerm)
 	if err != nil {
-		return nil, fmt.Errorf("failed to create cache directory %v: %w", dbPath, err)
+		return nil, errors.Wrapf(err, "failed to create cache directory %v", dbPath)
 	}
 	err = os.MkdirAll(chunkPath, os.ModePerm)
 	if err != nil {
-		return nil, fmt.Errorf("failed to create cache directory %v: %w", chunkPath, err)
+		return nil, errors.Wrapf(err, "failed to create cache directory %v", chunkPath)
 	}

 	dbPath = filepath.Join(dbPath, name+".db")
@@ -450,7 +448,7 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 		DbWaitTime: time.Duration(opt.DbWaitTime),
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to start cache db: %w", err)
+		return nil, errors.Wrapf(err, "failed to start cache db")
 	}
 	// Trap SIGINT and SIGTERM to close the DB handle gracefully
 	c := make(chan os.Signal, 1)
@@ -484,12 +482,12 @@ func NewFs(ctx context.Context, name, rootPath string, m configmap.Mapper) (fs.F
 	if f.opt.TempWritePath != "" {
 		err = os.MkdirAll(f.opt.TempWritePath, os.ModePerm)
 		if err != nil {
-			return nil, fmt.Errorf("failed to create cache directory %v: %w", f.opt.TempWritePath, err)
+			return nil, errors.Wrapf(err, "failed to create cache directory %v", f.opt.TempWritePath)
 		}
 		f.opt.TempWritePath = filepath.ToSlash(f.opt.TempWritePath)
 		f.tempFs, err = cache.Get(ctx, f.opt.TempWritePath)
 		if err != nil {
-			return nil, fmt.Errorf("failed to create temp fs: %w", err)
+			return nil, errors.Wrapf(err, "failed to create temp fs: %v", err)
 		}
 		fs.Infof(name, "Upload Temp Rest Time: %v", f.opt.TempWaitTime)
 		fs.Infof(name, "Upload Temp FS: %v", f.opt.TempWritePath)
@@ -606,7 +604,7 @@ func (f *Fs) httpStats(ctx context.Context, in rc.Params) (out rc.Params, err er
 	out = make(rc.Params)
 	m, err := f.Stats()
 	if err != nil {
-		return out, fmt.Errorf("error while getting cache stats")
+		return out, errors.Errorf("error while getting cache stats")
 	}
 	out["status"] = "ok"
 	out["stats"] = m
@@ -633,7 +631,7 @@ func (f *Fs) httpExpireRemote(ctx context.Context, in rc.Params) (out rc.Params,
 	out = make(rc.Params)
 	remoteInt, ok := in["remote"]
 	if !ok {
-		return out, fmt.Errorf("remote is needed")
+		return out, errors.Errorf("remote is needed")
 	}
 	remote := remoteInt.(string)
 	withData := false
@@ -644,7 +642,7 @@ func (f *Fs) httpExpireRemote(ctx context.Context, in rc.Params) (out rc.Params,

 	remote = f.unwrapRemote(remote)
 	if !f.cache.HasEntry(path.Join(f.Root(), remote)) {
-		return out, fmt.Errorf("%s doesn't exist in cache", remote)
+		return out, errors.Errorf("%s doesn't exist in cache", remote)
 	}

 	co := NewObject(f, remote)
@@ -653,7 +651,7 @@ func (f *Fs) httpExpireRemote(ctx context.Context, in rc.Params) (out rc.Params,
 		cd := NewDirectory(f, remote)
 		err := f.cache.ExpireDir(cd)
 		if err != nil {
-			return out, fmt.Errorf("error expiring directory: %w", err)
+			return out, errors.WithMessage(err, "error expiring directory")
 		}
 		// notify vfs too
 		f.notifyChangeUpstream(cd.Remote(), fs.EntryDirectory)
@@ -664,7 +662,7 @@ func (f *Fs) httpExpireRemote(ctx context.Context, in rc.Params) (out rc.Params,
 	// expire the entry
 	err = f.cache.ExpireObject(co, withData)
 	if err != nil {
-		return out, fmt.Errorf("error expiring file: %w", err)
+		return out, errors.WithMessage(err, "error expiring file")
 	}
 	// notify vfs too
 	f.notifyChangeUpstream(co.Remote(), fs.EntryObject)
@@ -685,24 +683,24 @@ func (f *Fs) rcFetch(ctx context.Context, in rc.Params) (rc.Params, error) {
 			case 1:
 				start, err = strconv.ParseInt(ints[0], 10, 64)
 				if err != nil {
-					return nil, fmt.Errorf("invalid range: %q", part)
+					return nil, errors.Errorf("invalid range: %q", part)
 				}
 				end = start + 1
 			case 2:
 				if ints[0] != "" {
 					start, err = strconv.ParseInt(ints[0], 10, 64)
 					if err != nil {
-						return nil, fmt.Errorf("invalid range: %q", part)
+						return nil, errors.Errorf("invalid range: %q", part)
 					}
 				}
 				if ints[1] != "" {
 					end, err = strconv.ParseInt(ints[1], 10, 64)
 					if err != nil {
-						return nil, fmt.Errorf("invalid range: %q", part)
+						return nil, errors.Errorf("invalid range: %q", part)
 					}
 				}
 			default:
-				return nil, fmt.Errorf("invalid range: %q", part)
+				return nil, errors.Errorf("invalid range: %q", part)
 			}
 			crs = append(crs, chunkRange{start: start, end: end})
 		}
@@ -757,18 +755,18 @@ func (f *Fs) rcFetch(ctx context.Context, in rc.Params) (rc.Params, error) {
 	delete(in, "chunks")
 	crs, err := parseChunks(s)
 	if err != nil {
-		return nil, fmt.Errorf("invalid chunks parameter: %w", err)
+		return nil, errors.Wrap(err, "invalid chunks parameter")
 	}
 	var files [][2]string
 	for k, v := range in {
 		if !strings.HasPrefix(k, "file") {
-			return nil, fmt.Errorf("invalid parameter %s=%s", k, v)
+			return nil, errors.Errorf("invalid parameter %s=%s", k, v)
 		}
 		switch v := v.(type) {
 		case string:
 			files = append(files, [2]string{v, f.unwrapRemote(v)})
 		default:
-			return nil, fmt.Errorf("invalid parameter %s=%s", k, v)
+			return nil, errors.Errorf("invalid parameter %s=%s", k, v)
 		}
 	}
 	type fileStatus struct {
@@ -1124,7 +1122,7 @@ func (f *Fs) ListR(ctx context.Context, dir string, callback fs.ListRCallback) (
 				case fs.Directory:
 					_ = f.cache.AddDir(DirectoryFromOriginal(ctx, f, o))
 				default:
-					return fmt.Errorf("Unknown object type %T", entry)
+					return errors.Errorf("Unknown object type %T", entry)
 				}
 			}

--- a/backend/cache/cache_internal_test.go
+++ b/backend/cache/cache_internal_test.go
@@ -1,5 +1,5 @@
-//go:build !plan9 && !js && !race
-// +build !plan9,!js,!race
+// +build !plan9,!js
+// +build !race

 package cache_test

@@ -7,7 +7,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/base64"
-	"errors"
 	goflag "flag"
 	"fmt"
 	"io"
@@ -17,12 +16,12 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"runtime"
 	"runtime/debug"
 	"strings"
 	"testing"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/cache"
 	"github.com/rclone/rclone/backend/crypt"
 	_ "github.com/rclone/rclone/backend/drive"
@@ -294,9 +293,6 @@ func TestInternalCachedWrittenContentMatches(t *testing.T) {
 }

 func TestInternalDoubleWrittenContentMatches(t *testing.T) {
-	if runtime.GOOS == "windows" && runtime.GOARCH == "386" {
-		t.Skip("Skip test on windows/386")
-	}
 	id := fmt.Sprintf("tidwcm%v", time.Now().Unix())
 	rootFs, boltDb := runInstance.newCacheFs(t, remoteName, id, false, true, nil, nil)
 	defer runInstance.cleanupFs(t, rootFs, boltDb)
@@ -446,7 +442,7 @@ func TestInternalWrappedFsChangeNotSeen(t *testing.T) {
 				return err
 			}
 			if coSize != expectedSize {
-				return fmt.Errorf("%v <> %v", coSize, expectedSize)
+				return errors.Errorf("%v <> %v", coSize, expectedSize)
 			}
 			return nil
 		}, 12, time.Second*10)
@@ -502,7 +498,7 @@ func TestInternalMoveWithNotify(t *testing.T) {
 		}
 		if len(li) != 2 {
 			log.Printf("not expected listing /test: %v", li)
-			return fmt.Errorf("not expected listing /test: %v", li)
+			return errors.Errorf("not expected listing /test: %v", li)
 		}

 		li, err = runInstance.list(t, rootFs, "test/one")
@@ -512,7 +508,7 @@ func TestInternalMoveWithNotify(t *testing.T) {
 		}
 		if len(li) != 0 {
 			log.Printf("not expected listing /test/one: %v", li)
-			return fmt.Errorf("not expected listing /test/one: %v", li)
+			return errors.Errorf("not expected listing /test/one: %v", li)
 		}

 		li, err = runInstance.list(t, rootFs, "test/second")
@@ -522,21 +518,21 @@ func TestInternalMoveWithNotify(t *testing.T) {
 		}
 		if len(li) != 1 {
 			log.Printf("not expected listing /test/second: %v", li)
-			return fmt.Errorf("not expected listing /test/second: %v", li)
+			return errors.Errorf("not expected listing /test/second: %v", li)
 		}
 		if fi, ok := li[0].(os.FileInfo); ok {
 			if fi.Name() != "data.bin" {
 				log.Printf("not expected name: %v", fi.Name())
-				return fmt.Errorf("not expected name: %v", fi.Name())
+				return errors.Errorf("not expected name: %v", fi.Name())
 			}
 		} else if di, ok := li[0].(fs.DirEntry); ok {
 			if di.Remote() != "test/second/data.bin" {
 				log.Printf("not expected remote: %v", di.Remote())
-				return fmt.Errorf("not expected remote: %v", di.Remote())
+				return errors.Errorf("not expected remote: %v", di.Remote())
 			}
 		} else {
 			log.Printf("unexpected listing: %v", li)
-			return fmt.Errorf("unexpected listing: %v", li)
+			return errors.Errorf("unexpected listing: %v", li)
 		}

 		log.Printf("complete listing: %v", li)
@@ -591,17 +587,17 @@ func TestInternalNotifyCreatesEmptyParts(t *testing.T) {
 		found = boltDb.HasEntry(path.Join(cfs.Root(), runInstance.encryptRemoteIfNeeded(t, "test")))
 		if !found {
 			log.Printf("not found /test")
-			return fmt.Errorf("not found /test")
+			return errors.Errorf("not found /test")
 		}
 		found = boltDb.HasEntry(path.Join(cfs.Root(), runInstance.encryptRemoteIfNeeded(t, "test"), runInstance.encryptRemoteIfNeeded(t, "one")))
 		if !found {
 			log.Printf("not found /test/one")
-			return fmt.Errorf("not found /test/one")
+			return errors.Errorf("not found /test/one")
 		}
 		found = boltDb.HasEntry(path.Join(cfs.Root(), runInstance.encryptRemoteIfNeeded(t, "test"), runInstance.encryptRemoteIfNeeded(t, "one"), runInstance.encryptRemoteIfNeeded(t, "test2")))
 		if !found {
 			log.Printf("not found /test/one/test2")
-			return fmt.Errorf("not found /test/one/test2")
+			return errors.Errorf("not found /test/one/test2")
 		}
 		li, err := runInstance.list(t, rootFs, "test/one")
 		if err != nil {
@@ -610,21 +606,21 @@ func TestInternalNotifyCreatesEmptyParts(t *testing.T) {
 		}
 		if len(li) != 1 {
 			log.Printf("not expected listing /test/one: %v", li)
-			return fmt.Errorf("not expected listing /test/one: %v", li)
+			return errors.Errorf("not expected listing /test/one: %v", li)
 		}
 		if fi, ok := li[0].(os.FileInfo); ok {
 			if fi.Name() != "test2" {
 				log.Printf("not expected name: %v", fi.Name())
-				return fmt.Errorf("not expected name: %v", fi.Name())
+				return errors.Errorf("not expected name: %v", fi.Name())
 			}
 		} else if di, ok := li[0].(fs.DirEntry); ok {
 			if di.Remote() != "test/one/test2" {
 				log.Printf("not expected remote: %v", di.Remote())
-				return fmt.Errorf("not expected remote: %v", di.Remote())
+				return errors.Errorf("not expected remote: %v", di.Remote())
 			}
 		} else {
 			log.Printf("unexpected listing: %v", li)
-			return fmt.Errorf("unexpected listing: %v", li)
+			return errors.Errorf("unexpected listing: %v", li)
 		}
 		log.Printf("complete listing /test/one/test2")
 		return nil
@@ -685,9 +681,6 @@ func TestInternalCacheWrites(t *testing.T) {
 }

 func TestInternalMaxChunkSizeRespected(t *testing.T) {
-	if runtime.GOOS == "windows" && runtime.GOARCH == "386" {
-		t.Skip("Skip test on windows/386")
-	}
 	id := fmt.Sprintf("timcsr%v", time.Now().Unix())
 	rootFs, boltDb := runInstance.newCacheFs(t, remoteName, id, false, true, nil, map[string]string{"workers": "1"})
 	defer runInstance.cleanupFs(t, rootFs, boltDb)
@@ -926,9 +919,9 @@ func (r *run) newCacheFs(t *testing.T, remote, id string, needRemote, purge bool
 		}
 	}
 	runInstance.rootIsCrypt = rootIsCrypt
-	runInstance.dbPath = filepath.Join(config.GetCacheDir(), "cache-backend", cacheRemote+".db")
-	runInstance.chunkPath = filepath.Join(config.GetCacheDir(), "cache-backend", cacheRemote)
-	runInstance.vfsCachePath = filepath.Join(config.GetCacheDir(), "vfs", remote)
+	runInstance.dbPath = filepath.Join(config.CacheDir, "cache-backend", cacheRemote+".db")
+	runInstance.chunkPath = filepath.Join(config.CacheDir, "cache-backend", cacheRemote)
+	runInstance.vfsCachePath = filepath.Join(config.CacheDir, "vfs", remote)
 	boltDb, err := cache.GetPersistent(runInstance.dbPath, runInstance.chunkPath, &cache.Features{PurgeDb: true})
 	require.NoError(t, err)

@@ -1062,7 +1055,7 @@ func (r *run) readDataFromRemote(t *testing.T, f fs.Fs, remote string, offset, e
 	checkSample = r.readDataFromObj(t, co, offset, end, noLengthCheck)

 	if !noLengthCheck && size != int64(len(checkSample)) {
-		return checkSample, fmt.Errorf("read size doesn't match expected: %v <> %v", len(checkSample), size)
+		return checkSample, errors.Errorf("read size doesn't match expected: %v <> %v", len(checkSample), size)
 	}
 	return checkSample, nil
 }
@@ -1257,7 +1250,7 @@ func (r *run) listenForBackgroundUpload(t *testing.T, f fs.Fs, remote string) ch
 			case state = <-buCh:
 				// continue
 			case <-time.After(maxDuration):
-				waitCh <- fmt.Errorf("Timed out waiting for background upload: %v", remote)
+				waitCh <- errors.Errorf("Timed out waiting for background upload: %v", remote)
 				return
 			}
 			checkRemote := state.Remote
@@ -1274,7 +1267,7 @@ func (r *run) listenForBackgroundUpload(t *testing.T, f fs.Fs, remote string) ch
 				return
 			}
 		}
-		waitCh <- fmt.Errorf("Too many attempts to wait for the background upload: %v", remote)
+		waitCh <- errors.Errorf("Too many attempts to wait for the background upload: %v", remote)
 	}()
 	return waitCh
 }
--- a/backend/cache/cache_test.go
+++ b/backend/cache/cache_test.go
@@ -1,7 +1,7 @@
 // Test Cache filesystem interface

-//go:build !plan9 && !js && !race
-// +build !plan9,!js,!race
+// +build !plan9,!js
+// +build !race

 package cache_test

--- a/backend/cache/cache_unsupported.go
+++ b/backend/cache/cache_unsupported.go
@@ -1,7 +1,6 @@
 // Build for cache for unsupported platforms to stop go complaining
 // about "no buildable Go source files "

-//go:build plan9 || js
 // +build plan9 js

 package cache
--- a/backend/cache/cache_upload_test.go
+++ b/backend/cache/cache_upload_test.go
@@ -1,5 +1,5 @@
-//go:build !plan9 && !js && !race
-// +build !plan9,!js,!race
+// +build !plan9,!js
+// +build !race

 package cache_test

--- a/backend/cache/directory.go
+++ b/backend/cache/directory.go
@@ -1,4 +1,3 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache
--- a/backend/cache/handle.go
+++ b/backend/cache/handle.go
@@ -1,11 +1,9 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache

 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"path"
@@ -14,6 +12,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/operations"
 )
@@ -243,7 +242,7 @@ func (r *Handle) getChunk(chunkStart int64) ([]byte, error) {
 			return nil, io.ErrUnexpectedEOF
 		}

-		return nil, fmt.Errorf("chunk not found %v", chunkStart)
+		return nil, errors.Errorf("chunk not found %v", chunkStart)
 	}

 	// first chunk will be aligned with the start
@@ -323,7 +322,7 @@ func (r *Handle) Seek(offset int64, whence int) (int64, error) {
 		fs.Debugf(r, "moving offset end (%v) from %v to %v", r.cachedObject.Size(), r.offset, r.cachedObject.Size()+offset)
 		r.offset = r.cachedObject.Size() + offset
 	default:
-		err = fmt.Errorf("cache: unimplemented seek whence %v", whence)
+		err = errors.Errorf("cache: unimplemented seek whence %v", whence)
 	}

 	chunkStart := r.offset - (r.offset % int64(r.cacheFs().opt.ChunkSize))
--- a/backend/cache/object.go
+++ b/backend/cache/object.go
@@ -1,16 +1,15 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache

 import (
 	"context"
-	"fmt"
 	"io"
 	"path"
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/lib/readers"
@@ -178,14 +177,10 @@ func (o *Object) refreshFromSource(ctx context.Context, force bool) error {
 	}
 	if o.isTempFile() {
 		liveObject, err = o.ParentFs.NewObject(ctx, o.Remote())
-		if err != nil {
-			err = fmt.Errorf("in parent fs %v: %w", o.ParentFs, err)
-		}
+		err = errors.Wrapf(err, "in parent fs %v", o.ParentFs)
 	} else {
 		liveObject, err = o.CacheFs.Fs.NewObject(ctx, o.Remote())
-		if err != nil {
-			err = fmt.Errorf("in cache fs %v: %w", o.CacheFs.Fs, err)
-		}
+		err = errors.Wrapf(err, "in cache fs %v", o.CacheFs.Fs)
 	}
 	if err != nil {
 		fs.Errorf(o, "error refreshing object in : %v", err)
@@ -257,7 +252,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		defer o.CacheFs.backgroundRunner.play()
 		// don't allow started uploads
 		if o.isTempFile() && o.tempFileStartedUpload() {
-			return fmt.Errorf("%v is currently uploading, can't update", o)
+			return errors.Errorf("%v is currently uploading, can't update", o)
 		}
 	}
 	fs.Debugf(o, "updating object contents with size %v", src.Size())
@@ -296,7 +291,7 @@ func (o *Object) Remove(ctx context.Context) error {
 		defer o.CacheFs.backgroundRunner.play()
 		// don't allow started uploads
 		if o.isTempFile() && o.tempFileStartedUpload() {
-			return fmt.Errorf("%v is currently uploading, can't delete", o)
+			return errors.Errorf("%v is currently uploading, can't delete", o)
 		}
 	}
 	err := o.Object.Remove(ctx)
--- a/backend/cache/plex.go
+++ b/backend/cache/plex.go
@@ -1,4 +1,3 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache
--- a/backend/cache/storage_memory.go
+++ b/backend/cache/storage_memory.go
@@ -1,15 +1,14 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache

 import (
-	"fmt"
 	"strconv"
 	"strings"
 	"time"

 	cache "github.com/patrickmn/go-cache"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 )

@@ -53,7 +52,7 @@ func (m *Memory) GetChunk(cachedObject *Object, offset int64) ([]byte, error) {
 		return data, nil
 	}

-	return nil, fmt.Errorf("couldn't get cached object data at offset %v", offset)
+	return nil, errors.Errorf("couldn't get cached object data at offset %v", offset)
 }

 // AddChunk adds a new chunk of a cached object
--- a/backend/cache/storage_persistent.go
+++ b/backend/cache/storage_persistent.go
@@ -1,4 +1,3 @@
-//go:build !plan9 && !js
 // +build !plan9,!js

 package cache
@@ -17,6 +16,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/walk"
 	bolt "go.etcd.io/bbolt"
@@ -119,11 +119,11 @@ func (b *Persistent) connect() error {

 	err = os.MkdirAll(b.dataPath, os.ModePerm)
 	if err != nil {
-		return fmt.Errorf("failed to create a data directory %q: %w", b.dataPath, err)
+		return errors.Wrapf(err, "failed to create a data directory %q", b.dataPath)
 	}
 	b.db, err = bolt.Open(b.dbPath, 0644, &bolt.Options{Timeout: b.features.DbWaitTime})
 	if err != nil {
-		return fmt.Errorf("failed to open a cache connection to %q: %w", b.dbPath, err)
+		return errors.Wrapf(err, "failed to open a cache connection to %q", b.dbPath)
 	}
 	if b.features.PurgeDb {
 		b.Purge()
@@ -175,7 +175,7 @@ func (b *Persistent) GetDir(remote string) (*Directory, error) {
 	err := b.db.View(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(remote, false, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open bucket (%v)", remote)
+			return errors.Errorf("couldn't open bucket (%v)", remote)
 		}

 		data := bucket.Get([]byte("."))
@@ -183,7 +183,7 @@ func (b *Persistent) GetDir(remote string) (*Directory, error) {
 			return json.Unmarshal(data, cd)
 		}

-		return fmt.Errorf("%v not found", remote)
+		return errors.Errorf("%v not found", remote)
 	})

 	return cd, err
@@ -208,7 +208,7 @@ func (b *Persistent) AddBatchDir(cachedDirs []*Directory) error {
 			bucket = b.getBucket(cachedDirs[0].Dir, true, tx)
 		}
 		if bucket == nil {
-			return fmt.Errorf("couldn't open bucket (%v)", cachedDirs[0].Dir)
+			return errors.Errorf("couldn't open bucket (%v)", cachedDirs[0].Dir)
 		}

 		for _, cachedDir := range cachedDirs {
@@ -225,7 +225,7 @@ func (b *Persistent) AddBatchDir(cachedDirs []*Directory) error {

 			encoded, err := json.Marshal(cachedDir)
 			if err != nil {
-				return fmt.Errorf("couldn't marshal object (%v): %v", cachedDir, err)
+				return errors.Errorf("couldn't marshal object (%v): %v", cachedDir, err)
 			}
 			err = b.Put([]byte("."), encoded)
 			if err != nil {
@@ -243,17 +243,17 @@ func (b *Persistent) GetDirEntries(cachedDir *Directory) (fs.DirEntries, error)
 	err := b.db.View(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(cachedDir.abs(), false, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open bucket (%v)", cachedDir.abs())
+			return errors.Errorf("couldn't open bucket (%v)", cachedDir.abs())
 		}

 		val := bucket.Get([]byte("."))
 		if val != nil {
 			err := json.Unmarshal(val, cachedDir)
 			if err != nil {
-				return fmt.Errorf("error during unmarshalling obj: %v", err)
+				return errors.Errorf("error during unmarshalling obj: %v", err)
 			}
 		} else {
-			return fmt.Errorf("missing cached dir: %v", cachedDir)
+			return errors.Errorf("missing cached dir: %v", cachedDir)
 		}

 		c := bucket.Cursor()
@@ -268,7 +268,7 @@ func (b *Persistent) GetDirEntries(cachedDir *Directory) (fs.DirEntries, error)
 				// we try to find a cached meta for the dir
 				currentBucket := c.Bucket().Bucket(k)
 				if currentBucket == nil {
-					return fmt.Errorf("couldn't open bucket (%v)", string(k))
+					return errors.Errorf("couldn't open bucket (%v)", string(k))
 				}

 				metaKey := currentBucket.Get([]byte("."))
@@ -317,7 +317,7 @@ func (b *Persistent) RemoveDir(fp string) error {
 		err = b.db.Update(func(tx *bolt.Tx) error {
 			bucket := b.getBucket(cleanPath(parentDir), false, tx)
 			if bucket == nil {
-				return fmt.Errorf("couldn't open bucket (%v)", fp)
+				return errors.Errorf("couldn't open bucket (%v)", fp)
 			}
 			// delete the cached dir
 			err := bucket.DeleteBucket([]byte(cleanPath(dirName)))
@@ -377,13 +377,13 @@ func (b *Persistent) GetObject(cachedObject *Object) (err error) {
 	return b.db.View(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(cachedObject.Dir, false, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open parent bucket for %v", cachedObject.Dir)
+			return errors.Errorf("couldn't open parent bucket for %v", cachedObject.Dir)
 		}
 		val := bucket.Get([]byte(cachedObject.Name))
 		if val != nil {
 			return json.Unmarshal(val, cachedObject)
 		}
-		return fmt.Errorf("couldn't find object (%v)", cachedObject.Name)
+		return errors.Errorf("couldn't find object (%v)", cachedObject.Name)
 	})
 }

@@ -392,16 +392,16 @@ func (b *Persistent) AddObject(cachedObject *Object) error {
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(cachedObject.Dir, true, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open parent bucket for %v", cachedObject)
+			return errors.Errorf("couldn't open parent bucket for %v", cachedObject)
 		}
 		// cache Object Info
 		encoded, err := json.Marshal(cachedObject)
 		if err != nil {
-			return fmt.Errorf("couldn't marshal object (%v) info: %v", cachedObject, err)
+			return errors.Errorf("couldn't marshal object (%v) info: %v", cachedObject, err)
 		}
 		err = bucket.Put([]byte(cachedObject.Name), encoded)
 		if err != nil {
-			return fmt.Errorf("couldn't cache object (%v) info: %v", cachedObject, err)
+			return errors.Errorf("couldn't cache object (%v) info: %v", cachedObject, err)
 		}
 		return nil
 	})
@@ -413,7 +413,7 @@ func (b *Persistent) RemoveObject(fp string) error {
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(cleanPath(parentDir), false, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open parent bucket for %v", cleanPath(parentDir))
+			return errors.Errorf("couldn't open parent bucket for %v", cleanPath(parentDir))
 		}
 		err := bucket.Delete([]byte(cleanPath(objName)))
 		if err != nil {
@@ -445,7 +445,7 @@ func (b *Persistent) HasEntry(remote string) bool {
 	err := b.db.View(func(tx *bolt.Tx) error {
 		bucket := b.getBucket(dir, false, tx)
 		if bucket == nil {
-			return fmt.Errorf("couldn't open parent bucket for %v", remote)
+			return errors.Errorf("couldn't open parent bucket for %v", remote)
 		}
 		if f := bucket.Bucket([]byte(name)); f != nil {
 			return nil
@@ -454,7 +454,7 @@ func (b *Persistent) HasEntry(remote string) bool {
 			return nil
 		}

-		return fmt.Errorf("couldn't find object (%v)", remote)
+		return errors.Errorf("couldn't find object (%v)", remote)
 	})
 	if err == nil {
 		return true
@@ -554,7 +554,7 @@ func (b *Persistent) CleanChunksBySize(maxSize int64) {
 	err := b.db.Update(func(tx *bolt.Tx) error {
 		dataTsBucket := tx.Bucket([]byte(DataTsBucket))
 		if dataTsBucket == nil {
-			return fmt.Errorf("Couldn't open (%v) bucket", DataTsBucket)
+			return errors.Errorf("Couldn't open (%v) bucket", DataTsBucket)
 		}
 		// iterate through ts
 		c := dataTsBucket.Cursor()
@@ -732,7 +732,7 @@ func (b *Persistent) GetChunkTs(path string, offset int64) (time.Time, error) {
 				return nil
 			}
 		}
-		return fmt.Errorf("not found %v-%v", path, offset)
+		return errors.Errorf("not found %v-%v", path, offset)
 	})

 	return t, err
@@ -772,7 +772,7 @@ func (b *Persistent) addPendingUpload(destPath string, started bool) error {
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists([]byte(tempBucket))
 		if err != nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}
 		tempObj := &tempUploadInfo{
 			DestPath: destPath,
@@ -783,11 +783,11 @@ func (b *Persistent) addPendingUpload(destPath string, started bool) error {
 		// cache Object Info
 		encoded, err := json.Marshal(tempObj)
 		if err != nil {
-			return fmt.Errorf("couldn't marshal object (%v) info: %v", destPath, err)
+			return errors.Errorf("couldn't marshal object (%v) info: %v", destPath, err)
 		}
 		err = bucket.Put([]byte(destPath), encoded)
 		if err != nil {
-			return fmt.Errorf("couldn't cache object (%v) info: %v", destPath, err)
+			return errors.Errorf("couldn't cache object (%v) info: %v", destPath, err)
 		}

 		return nil
@@ -802,7 +802,7 @@ func (b *Persistent) getPendingUpload(inRoot string, waitTime time.Duration) (de
 	err = b.db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists([]byte(tempBucket))
 		if err != nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}

 		c := bucket.Cursor()
@@ -835,7 +835,7 @@ func (b *Persistent) getPendingUpload(inRoot string, waitTime time.Duration) (de
 			return nil
 		}

-		return fmt.Errorf("no pending upload found")
+		return errors.Errorf("no pending upload found")
 	})

 	return destPath, err
@@ -846,14 +846,14 @@ func (b *Persistent) SearchPendingUpload(remote string) (started bool, err error
 	err = b.db.View(func(tx *bolt.Tx) error {
 		bucket := tx.Bucket([]byte(tempBucket))
 		if bucket == nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}

 		var tempObj = &tempUploadInfo{}
 		v := bucket.Get([]byte(remote))
 		err = json.Unmarshal(v, tempObj)
 		if err != nil {
-			return fmt.Errorf("pending upload (%v) not found %v", remote, err)
+			return errors.Errorf("pending upload (%v) not found %v", remote, err)
 		}

 		started = tempObj.Started
@@ -868,7 +868,7 @@ func (b *Persistent) searchPendingUploadFromDir(dir string) (remotes []string, e
 	err = b.db.View(func(tx *bolt.Tx) error {
 		bucket := tx.Bucket([]byte(tempBucket))
 		if bucket == nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}

 		c := bucket.Cursor()
@@ -898,22 +898,22 @@ func (b *Persistent) rollbackPendingUpload(remote string) error {
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists([]byte(tempBucket))
 		if err != nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}
 		var tempObj = &tempUploadInfo{}
 		v := bucket.Get([]byte(remote))
 		err = json.Unmarshal(v, tempObj)
 		if err != nil {
-			return fmt.Errorf("pending upload (%v) not found %v", remote, err)
+			return errors.Errorf("pending upload (%v) not found %v", remote, err)
 		}
 		tempObj.Started = false
 		v2, err := json.Marshal(tempObj)
 		if err != nil {
-			return fmt.Errorf("pending upload not updated %v", err)
+			return errors.Errorf("pending upload not updated %v", err)
 		}
 		err = bucket.Put([]byte(tempObj.DestPath), v2)
 		if err != nil {
-			return fmt.Errorf("pending upload not updated %v", err)
+			return errors.Errorf("pending upload not updated %v", err)
 		}
 		return nil
 	})
@@ -926,7 +926,7 @@ func (b *Persistent) removePendingUpload(remote string) error {
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists([]byte(tempBucket))
 		if err != nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}
 		return bucket.Delete([]byte(remote))
 	})
@@ -941,17 +941,17 @@ func (b *Persistent) updatePendingUpload(remote string, fn func(item *tempUpload
 	return b.db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists([]byte(tempBucket))
 		if err != nil {
-			return fmt.Errorf("couldn't bucket for %v", tempBucket)
+			return errors.Errorf("couldn't bucket for %v", tempBucket)
 		}

 		var tempObj = &tempUploadInfo{}
 		v := bucket.Get([]byte(remote))
 		err = json.Unmarshal(v, tempObj)
 		if err != nil {
-			return fmt.Errorf("pending upload (%v) not found %v", remote, err)
+			return errors.Errorf("pending upload (%v) not found %v", remote, err)
 		}
 		if tempObj.Started {
-			return fmt.Errorf("pending upload already started %v", remote)
+			return errors.Errorf("pending upload already started %v", remote)
 		}
 		err = fn(tempObj)
 		if err != nil {
@@ -969,11 +969,11 @@ func (b *Persistent) updatePendingUpload(remote string, fn func(item *tempUpload
 		}
 		v2, err := json.Marshal(tempObj)
 		if err != nil {
-			return fmt.Errorf("pending upload not updated %v", err)
+			return errors.Errorf("pending upload not updated %v", err)
 		}
 		err = bucket.Put([]byte(tempObj.DestPath), v2)
 		if err != nil {
-			return fmt.Errorf("pending upload not updated %v", err)
+			return errors.Errorf("pending upload not updated %v", err)
 		}

 		return nil
@@ -1014,11 +1014,11 @@ func (b *Persistent) ReconcileTempUploads(ctx context.Context, cacheFs *Fs) erro
 			// cache Object Info
 			encoded, err := json.Marshal(tempObj)
 			if err != nil {
-				return fmt.Errorf("couldn't marshal object (%v) info: %v", queuedEntry, err)
+				return errors.Errorf("couldn't marshal object (%v) info: %v", queuedEntry, err)
 			}
 			err = bucket.Put([]byte(destPath), encoded)
 			if err != nil {
-				return fmt.Errorf("couldn't cache object (%v) info: %v", destPath, err)
+				return errors.Errorf("couldn't cache object (%v) info: %v", destPath, err)
 			}
 			fs.Debugf(cacheFs, "reconciled temporary upload: %v", destPath)
 		}
--- a/backend/chunker/chunker.go
+++ b/backend/chunker/chunker.go
@@ -8,7 +8,6 @@ import (
 	"crypto/sha1"
 	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
 	gohash "hash"
 	"io"
@@ -22,6 +21,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/cache"
@@ -150,7 +150,6 @@ func init() {
 			Name:     "remote",
 			Required: true,
 			Help: `Remote to chunk/unchunk.
-
 Normally should contain a ':' and a path, e.g. "myremote:path/to/dir",
 "myremote:bucket" or maybe "myremote:" (not recommended).`,
 		}, {
@@ -164,7 +163,6 @@ Normally should contain a ':' and a path, e.g. "myremote:path/to/dir",
 			Hide:     fs.OptionHideCommandLine,
 			Default:  `*.rclone_chunk.###`,
 			Help: `String format of chunk file names.
-
 The two placeholders are: base file name (*) and chunk number (#...).
 There must be one and only one asterisk and one or more consecutive hash characters.
 If chunk number has less digits than the number of hashes, it is left-padded by zeros.
@@ -176,57 +174,48 @@ Possible chunk files are ignored if their name does not match given format.`,
 			Hide:     fs.OptionHideCommandLine,
 			Default:  1,
 			Help: `Minimum valid chunk number. Usually 0 or 1.
-
 By default chunk numbers start from 1.`,
 		}, {
 			Name:     "meta_format",
 			Advanced: true,
 			Hide:     fs.OptionHideCommandLine,
 			Default:  "simplejson",
-			Help: `Format of the metadata object or "none".
-
-By default "simplejson".
+			Help: `Format of the metadata object or "none". By default "simplejson".
 Metadata is a small JSON file named after the composite file.`,
 			Examples: []fs.OptionExample{{
 				Value: "none",
-				Help: `Do not use metadata files at all.
-Requires hash type "none".`,
+				Help:  `Do not use metadata files at all. Requires hash type "none".`,
 			}, {
 				Value: "simplejson",
 				Help: `Simple JSON supports hash sums and chunk validation.
-
 It has the following fields: ver, size, nchunks, md5, sha1.`,
 			}},
 		}, {
 			Name:     "hash_type",
 			Advanced: false,
 			Default:  "md5",
-			Help: `Choose how chunker handles hash sums.
-
-All modes but "none" require metadata.`,
+			Help:     `Choose how chunker handles hash sums. All modes but "none" require metadata.`,
 			Examples: []fs.OptionExample{{
 				Value: "none",
-				Help: `Pass any hash supported by wrapped remote for non-chunked files.
-Return nothing otherwise.`,
+				Help:  `Pass any hash supported by wrapped remote for non-chunked files, return nothing otherwise`,
 			}, {
 				Value: "md5",
-				Help:  `MD5 for composite files.`,
+				Help:  `MD5 for composite files`,
 			}, {
 				Value: "sha1",
-				Help:  `SHA1 for composite files.`,
+				Help:  `SHA1 for composite files`,
 			}, {
 				Value: "md5all",
-				Help:  `MD5 for all files.`,
+				Help:  `MD5 for all files`,
 			}, {
 				Value: "sha1all",
-				Help:  `SHA1 for all files.`,
+				Help:  `SHA1 for all files`,
 			}, {
 				Value: "md5quick",
-				Help: `Copying a file to chunker will request MD5 from the source.
-Falling back to SHA1 if unsupported.`,
+				Help:  `Copying a file to chunker will request MD5 from the source falling back to SHA1 if unsupported`,
 			}, {
 				Value: "sha1quick",
-				Help:  `Similar to "md5quick" but prefers SHA1 over MD5.`,
+				Help:  `Similar to "md5quick" but prefers SHA1 over MD5`,
 			}},
 		}, {
 			Name:     "fail_hard",
@@ -290,13 +279,13 @@ func NewFs(ctx context.Context, name, rpath string, m configmap.Mapper) (fs.Fs,

 	baseName, basePath, err := fspath.SplitFs(remote)
 	if err != nil {
-		return nil, fmt.Errorf("failed to parse remote %q to wrap: %w", remote, err)
+		return nil, errors.Wrapf(err, "failed to parse remote %q to wrap", remote)
 	}
 	// Look for a file first
 	remotePath := fspath.JoinRootPath(basePath, rpath)
 	baseFs, err := cache.Get(ctx, baseName+remotePath)
 	if err != fs.ErrorIsFile && err != nil {
-		return nil, fmt.Errorf("failed to make remote %q to wrap: %w", baseName+remotePath, err)
+		return nil, errors.Wrapf(err, "failed to make remote %q to wrap", baseName+remotePath)
 	}
 	if !operations.CanServerSideMove(baseFs) {
 		return nil, errors.New("can't use chunker on a backend which doesn't support server-side move or copy")
@@ -386,7 +375,7 @@ type Fs struct {
 // configure must be called only from NewFs or by unit tests.
 func (f *Fs) configure(nameFormat, metaFormat, hashType, transactionMode string) error {
 	if err := f.setChunkNameFormat(nameFormat); err != nil {
-		return fmt.Errorf("invalid name format '%s': %w", nameFormat, err)
+		return errors.Wrapf(err, "invalid name format '%s'", nameFormat)
 	}
 	if err := f.setMetaFormat(metaFormat); err != nil {
 		return err
@@ -443,10 +432,10 @@ func (f *Fs) setHashType(hashType string) error {
 		f.hashFallback = true
 	case "md5all":
 		f.useMD5 = true
-		f.hashAll = !f.base.Hashes().Contains(hash.MD5) || f.base.Features().SlowHash
+		f.hashAll = !f.base.Hashes().Contains(hash.MD5)
 	case "sha1all":
 		f.useSHA1 = true
-		f.hashAll = !f.base.Hashes().Contains(hash.SHA1) || f.base.Features().SlowHash
+		f.hashAll = !f.base.Hashes().Contains(hash.SHA1)
 	default:
 		return fmt.Errorf("unsupported hash type '%s'", hashType)
 	}
@@ -823,7 +812,7 @@ func (f *Fs) processEntries(ctx context.Context, origEntries fs.DirEntries, dirP
 			tempEntries = append(tempEntries, wrapDir)
 		default:
 			if f.opt.FailHard {
-				return nil, fmt.Errorf("unknown object type %T", entry)
+				return nil, fmt.Errorf("Unknown object type %T", entry)
 			}
 			fs.Debugf(f, "unknown object type %T", entry)
 		}
@@ -878,7 +867,7 @@ func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
 // ignores non-chunked objects and skips chunk size checks.
 func (f *Fs) scanObject(ctx context.Context, remote string, quickScan bool) (fs.Object, error) {
 	if err := f.forbidChunk(false, remote); err != nil {
-		return nil, fmt.Errorf("can't access: %w", err)
+		return nil, errors.Wrap(err, "can't access")
 	}

 	var (
@@ -927,7 +916,7 @@ func (f *Fs) scanObject(ctx context.Context, remote string, quickScan bool) (fs.
 	case fs.ErrorDirNotFound:
 		entries = nil
 	default:
-		return nil, fmt.Errorf("can't detect composite file: %w", err)
+		return nil, errors.Wrap(err, "can't detect composite file")
 	}

 	if f.useNoRename {
@@ -1067,7 +1056,7 @@ func (o *Object) readMetadata(ctx context.Context) error {
 		case ErrMetaTooBig, ErrMetaUnknown:
 			return err // return these errors unwrapped for unit tests
 		default:
-			return fmt.Errorf("invalid metadata: %w", err)
+			return errors.Wrap(err, "invalid metadata")
 		}
 		if o.size != metaInfo.Size() || len(o.chunks) != metaInfo.nChunks {
 			return errors.New("metadata doesn't match file size")
@@ -1110,7 +1099,7 @@ func (o *Object) readXactID(ctx context.Context) (xactID string, err error) {

 	switch o.f.opt.MetaFormat {
 	case "simplejson":
-		if len(data) > maxMetadataSizeWritten {
+		if data != nil && len(data) > maxMetadataSizeWritten {
 			return "", nil // this was likely not a metadata object, return empty xactID but don't throw error
 		}
 		var metadata metaSimpleJSON
@@ -1132,7 +1121,7 @@ func (f *Fs) put(

 	// Perform consistency checks
 	if err := f.forbidChunk(src, remote); err != nil {
-		return nil, fmt.Errorf("%s refused: %w", action, err)
+		return nil, errors.Wrap(err, action+" refused")
 	}
 	if target == nil {
 		// Get target object with a quick directory scan
@@ -1146,7 +1135,7 @@ func (f *Fs) put(
 		obj := target.(*Object)
 		if err := obj.readMetadata(ctx); err == ErrMetaUnknown {
 			// refuse to update a file of unsupported format
-			return nil, fmt.Errorf("refusing to %s: %w", action, err)
+			return nil, errors.Wrap(err, "refusing to "+action)
 		}
 	}

@@ -1225,7 +1214,7 @@ func (f *Fs) put(
 		// and skips the "EOF" read. Hence, switch to next limit here.
 		if !(c.chunkLimit == 0 || c.chunkLimit == c.chunkSize || c.sizeTotal == -1 || c.done) {
 			silentlyRemove(ctx, chunk)
-			return nil, fmt.Errorf("destination ignored %d data bytes", c.chunkLimit)
+			return nil, fmt.Errorf("Destination ignored %d data bytes", c.chunkLimit)
 		}
 		c.chunkLimit = c.chunkSize

@@ -1234,7 +1223,7 @@ func (f *Fs) put(

 	// Validate uploaded size
 	if c.sizeTotal != -1 && c.readCount != c.sizeTotal {
-		return nil, fmt.Errorf("incorrect upload size %d != %d", c.readCount, c.sizeTotal)
+		return nil, fmt.Errorf("Incorrect upload size %d != %d", c.readCount, c.sizeTotal)
 	}

 	// Check for input that looks like valid metadata
@@ -1271,7 +1260,7 @@ func (f *Fs) put(
 		sizeTotal += chunk.Size()
 	}
 	if sizeTotal != c.readCount {
-		return nil, fmt.Errorf("incorrect chunks size %d != %d", sizeTotal, c.readCount)
+		return nil, fmt.Errorf("Incorrect chunks size %d != %d", sizeTotal, c.readCount)
 	}

 	// If previous object was chunked, remove its chunks
@@ -1564,7 +1553,7 @@ func (f *Fs) Hashes() hash.Set {
 // Shouldn't return an error if it already exists
 func (f *Fs) Mkdir(ctx context.Context, dir string) error {
 	if err := f.forbidChunk(dir, dir); err != nil {
-		return fmt.Errorf("can't mkdir: %w", err)
+		return errors.Wrap(err, "can't mkdir")
 	}
 	return f.base.Mkdir(ctx, dir)
 }
@@ -1633,7 +1622,7 @@ func (o *Object) Remove(ctx context.Context) (err error) {
 	if err := o.f.forbidChunk(o, o.Remote()); err != nil {
 		// operations.Move can still call Remove if chunker's Move refuses
 		// to corrupt file in hard mode. Hence, refuse to Remove, too.
-		return fmt.Errorf("refuse to corrupt: %w", err)
+		return errors.Wrap(err, "refuse to corrupt")
 	}
 	if err := o.readMetadata(ctx); err == ErrMetaUnknown {
 		// Proceed but warn user that unexpected things can happen.
@@ -1661,12 +1650,12 @@ func (o *Object) Remove(ctx context.Context) (err error) {
 // copyOrMove implements copy or move
 func (f *Fs) copyOrMove(ctx context.Context, o *Object, remote string, do copyMoveFn, md5, sha1, opName string) (fs.Object, error) {
 	if err := f.forbidChunk(o, remote); err != nil {
-		return nil, fmt.Errorf("can't %s: %w", opName, err)
+		return nil, errors.Wrapf(err, "can't %s", opName)
 	}
 	if err := o.readMetadata(ctx); err != nil {
 		// Refuse to copy/move composite files with invalid or future
 		// metadata format which might involve unsupported chunk types.
-		return nil, fmt.Errorf("can't %s this file: %w", opName, err)
+		return nil, errors.Wrapf(err, "can't %s this file", opName)
 	}
 	if !o.isComposite() {
 		fs.Debugf(o, "%s non-chunked object...", opName)
@@ -2163,7 +2152,7 @@ func (o *Object) UnWrap() fs.Object {
 func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (rc io.ReadCloser, err error) {
 	if err := o.readMetadata(ctx); err != nil {
 		// refuse to open unsupported format
-		return nil, fmt.Errorf("can't open: %w", err)
+		return nil, errors.Wrap(err, "can't open")
 	}
 	if !o.isComposite() {
 		return o.mainChunk().Open(ctx, options...) // chain to wrapped non-chunked file
@@ -2451,7 +2440,7 @@ func marshalSimpleJSON(ctx context.Context, size int64, nChunks int, md5, sha1,
 func unmarshalSimpleJSON(ctx context.Context, metaObject fs.Object, data []byte) (info *ObjectInfo, madeByChunker bool, err error) {
 	// Be strict about JSON format
 	// to reduce possibility that a random small file resembles metadata.
-	if len(data) > maxMetadataSizeWritten {
+	if data != nil && len(data) > maxMetadataSizeWritten {
 		return nil, false, ErrMetaTooBig
 	}
 	if data == nil || len(data) < 2 || data[0] != '{' || data[len(data)-1] != '}' {
--- a/backend/chunker/chunker_internal_test.go
+++ b/backend/chunker/chunker_internal_test.go
@@ -12,8 +12,6 @@ import (
 	"testing"

 	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/config/configmap"
-	"github.com/rclone/rclone/fs/fspath"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/fs/object"
 	"github.com/rclone/rclone/fs/operations"
@@ -40,30 +38,6 @@ func testPutLarge(t *testing.T, f *Fs, kilobytes int) {
 	})
 }

-type settings map[string]interface{}
-
-func deriveFs(ctx context.Context, t *testing.T, f fs.Fs, path string, opts settings) fs.Fs {
-	fsName := strings.Split(f.Name(), "{")[0] // strip off hash
-	configMap := configmap.Simple{}
-	for key, val := range opts {
-		configMap[key] = fmt.Sprintf("%v", val)
-	}
-	rpath := fspath.JoinRootPath(f.Root(), path)
-	remote := fmt.Sprintf("%s,%s:%s", fsName, configMap.String(), rpath)
-	fixFs, err := fs.NewFs(ctx, remote)
-	require.NoError(t, err)
-	return fixFs
-}
-
-var mtime1 = fstest.Time("2001-02-03T04:05:06.499999999Z")
-
-func testPutFile(ctx context.Context, t *testing.T, f fs.Fs, name, contents, message string, check bool) fs.Object {
-	item := fstest.Item{Path: name, ModTime: mtime1}
-	_, obj := fstests.PutTestContents(ctx, t, f, &item, contents, check)
-	assert.NotNil(t, obj, message)
-	return obj
-}
-
 // test chunk name parser
 func testChunkNameFormat(t *testing.T, f *Fs) {
 	saveOpt := f.opt
@@ -643,13 +617,22 @@ func testMetadataInput(t *testing.T, f *Fs) {
 	}()
 	f.opt.FailHard = false

+	modTime := fstest.Time("2001-02-03T04:05:06.499999999Z")
+
+	putFile := func(f fs.Fs, name, contents, message string, check bool) fs.Object {
+		item := fstest.Item{Path: name, ModTime: modTime}
+		_, obj := fstests.PutTestContents(ctx, t, f, &item, contents, check)
+		assert.NotNil(t, obj, message)
+		return obj
+	}
+
 	runSubtest := func(contents, name string) {
 		description := fmt.Sprintf("file with %s metadata", name)
 		filename := path.Join(dir, name)
 		require.True(t, len(contents) > 2 && len(contents) < minChunkForTest, description+" test data is correct")

-		part := testPutFile(ctx, t, f.base, f.makeChunkName(filename, 0, "", ""), "oops", "", true)
-		_ = testPutFile(ctx, t, f, filename, contents, "upload "+description, false)
+		part := putFile(f.base, f.makeChunkName(filename, 0, "", ""), "oops", "", true)
+		_ = putFile(f, filename, contents, "upload "+description, false)

 		obj, err := f.NewObject(ctx, filename)
 		assert.NoError(t, err, "access "+description)
@@ -695,7 +678,7 @@ func testMetadataInput(t *testing.T, f *Fs) {

 // Test that chunker refuses to change on objects with future/unknown metadata
 func testFutureProof(t *testing.T, f *Fs) {
-	if !f.useMeta {
+	if f.opt.MetaFormat == "none" {
 		t.Skip("this test requires metadata support")
 	}

@@ -861,44 +844,6 @@ func testChunkerServerSideMove(t *testing.T, f *Fs) {
 	_ = operations.Purge(ctx, f.base, dir)
 }

-// Test that md5all creates metadata even for small files
-func testMD5AllSlow(t *testing.T, f *Fs) {
-	ctx := context.Background()
-	fsResult := deriveFs(ctx, t, f, "md5all", settings{
-		"chunk_size":   "1P",
-		"name_format":  "*.#",
-		"hash_type":    "md5all",
-		"transactions": "rename",
-		"meta_format":  "simplejson",
-	})
-	chunkFs, ok := fsResult.(*Fs)
-	require.True(t, ok, "fs must be a chunker remote")
-	baseFs := chunkFs.base
-	if !baseFs.Features().SlowHash {
-		t.Skipf("this test needs a base fs with slow hash, e.g. local")
-	}
-
-	assert.True(t, chunkFs.useMD5, "must use md5")
-	assert.True(t, chunkFs.hashAll, "must hash all files")
-
-	_ = testPutFile(ctx, t, chunkFs, "file", "-", "error", true)
-	obj, err := chunkFs.NewObject(ctx, "file")
-	require.NoError(t, err)
-	sum, err := obj.Hash(ctx, hash.MD5)
-	assert.NoError(t, err)
-	assert.Equal(t, "336d5ebc5436534e61d16e63ddfca327", sum)
-
-	list, err := baseFs.List(ctx, "")
-	require.NoError(t, err)
-	assert.Equal(t, 2, len(list))
-	_, err = baseFs.NewObject(ctx, "file")
-	assert.NoError(t, err, "metadata must be created")
-	_, err = baseFs.NewObject(ctx, "file.1")
-	assert.NoError(t, err, "first chunk must be created")
-
-	require.NoError(t, operations.Purge(ctx, baseFs, ""))
-}
-
 // InternalTest dispatches all internal tests
 func (f *Fs) InternalTest(t *testing.T) {
 	t.Run("PutLarge", func(t *testing.T) {
@@ -931,9 +876,6 @@ func (f *Fs) InternalTest(t *testing.T) {
 	t.Run("ChunkerServerSideMove", func(t *testing.T) {
 		testChunkerServerSideMove(t, f)
 	})
-	t.Run("MD5AllSlow", func(t *testing.T) {
-		testMD5AllSlow(t, f)
-	})
 }

 var _ fstests.InternalTester = (*Fs)(nil)
--- a/backend/compress/compress.go
+++ b/backend/compress/compress.go
@@ -10,7 +10,6 @@ import (
 	"encoding/binary"
 	"encoding/hex"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -22,6 +21,7 @@ import (
 	"github.com/buengese/sgzip"
 	"github.com/gabriel-vasile/mimetype"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/chunkedreader"
@@ -83,23 +83,23 @@ func init() {
 			Name: "level",
 			Help: `GZIP compression level (-2 to 9).

-Generally -1 (default, equivalent to 5) is recommended.
-Levels 1 to 9 increase compression at the cost of speed. Going past 6 
-generally offers very little return.
-
-Level -2 uses Huffmann encoding only. Only use if you know what you
-are doing.
-Level 0 turns off compression.`,
+			Generally -1 (default, equivalent to 5) is recommended.
+			Levels 1 to 9 increase compressiong at the cost of speed.. Going past 6 
+			generally offers very little return.
+			
+			Level -2 uses Huffmann encoding only. Only use if you now what you
+			are doing
+			Level 0 turns off compression.`,
 			Default:  sgzip.DefaultCompression,
 			Advanced: true,
 		}, {
 			Name: "ram_cache_limit",
 			Help: `Some remotes don't allow the upload of files with unknown size.
-In this case the compressed file will need to be cached to determine
-it's size.
-
-Files smaller than this limit will be cached in RAM, files larger than 
-this limit will be cached on disk.`,
+				   In this case the compressed file will need to be cached to determine
+				   it's size.
+				   
+				   Files smaller than this limit will be cached in RAM, file larger than 
+				   this limit will be cached on disk`,
 			Default:  fs.SizeSuffix(20 * 1024 * 1024),
 			Advanced: true,
 		}},
@@ -143,7 +143,7 @@ func NewFs(ctx context.Context, name, rpath string, m configmap.Mapper) (fs.Fs,

 	wInfo, wName, wPath, wConfig, err := fs.ConfigFs(remote)
 	if err != nil {
-		return nil, fmt.Errorf("failed to parse remote %q to wrap: %w", remote, err)
+		return nil, errors.Wrapf(err, "failed to parse remote %q to wrap", remote)
 	}

 	// Strip trailing slashes if they exist in rpath
@@ -158,7 +158,7 @@ func NewFs(ctx context.Context, name, rpath string, m configmap.Mapper) (fs.Fs,
 		wrappedFs, err = wInfo.NewFs(ctx, wName, remotePath, wConfig)
 	}
 	if err != nil && err != fs.ErrorIsFile {
-		return nil, fmt.Errorf("failed to make remote %s:%q to wrap: %w", wName, remotePath, err)
+		return nil, errors.Wrapf(err, "failed to make remote %s:%q to wrap", wName, remotePath)
 	}

 	// Create the wrapping fs
@@ -304,7 +304,7 @@ func (f *Fs) processEntries(entries fs.DirEntries) (newEntries fs.DirEntries, er
 		case fs.Directory:
 			f.addDir(&newEntries, x)
 		default:
-			return nil, fmt.Errorf("Unknown object type %T", entry)
+			return nil, errors.Errorf("Unknown object type %T", entry)
 		}
 	}
 	return newEntries, nil
@@ -410,7 +410,7 @@ func (f *Fs) verifyObjectHash(ctx context.Context, o fs.Object, hasher *hash.Mul
 	srcHash := hasher.Sums()[ht]
 	dstHash, err := o.Hash(ctx, ht)
 	if err != nil {
-		return fmt.Errorf("failed to read destination hash: %w", err)
+		return errors.Wrap(err, "failed to read destination hash")
 	}
 	if srcHash != "" && dstHash != "" && srcHash != dstHash {
 		// remove object
@@ -418,7 +418,7 @@ func (f *Fs) verifyObjectHash(ctx context.Context, o fs.Object, hasher *hash.Mul
 		if err != nil {
 			fs.Errorf(o, "Failed to remove corrupted object: %v", err)
 		}
-		return fmt.Errorf("corrupted on transfer: %v compressed hashes differ %q vs %q", ht, srcHash, dstHash)
+		return errors.Errorf("corrupted on transfer: %v compressed hashes differ %q vs %q", ht, srcHash, dstHash)
 	}
 	return nil
 }
@@ -462,10 +462,10 @@ func (f *Fs) rcat(ctx context.Context, dstFileName string, in io.ReadCloser, mod
 		_ = os.Remove(tempFile.Name())
 	}()
 	if err != nil {
-		return nil, fmt.Errorf("Failed to create temporary local FS to spool file: %w", err)
+		return nil, errors.Wrap(err, "Failed to create temporary local FS to spool file")
 	}
 	if _, err = io.Copy(tempFile, in); err != nil {
-		return nil, fmt.Errorf("Failed to write temporary local file: %w", err)
+		return nil, errors.Wrap(err, "Failed to write temporary local file")
 	}
 	if _, err = tempFile.Seek(0, 0); err != nil {
 		return nil, err
@@ -714,7 +714,7 @@ func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, opt
 	if found && (oldObj.(*Object).meta.Mode != Uncompressed || compressible) {
 		err = oldObj.(*Object).Object.Remove(ctx)
 		if err != nil {
-			return nil, fmt.Errorf("Could remove original object: %w", err)
+			return nil, errors.Wrap(err, "Could remove original object")
 		}
 	}

@@ -723,7 +723,7 @@ func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, opt
 	if compressible {
 		wrapObj, err := operations.Move(ctx, f.Fs, nil, f.dataName(src.Remote(), newObj.size, compressible), newObj.Object)
 		if err != nil {
-			return nil, fmt.Errorf("Couldn't rename streamed Object.: %w", err)
+			return nil, errors.Wrap(err, "Couldn't rename streamed Object.")
 		}
 		newObj.Object = wrapObj
 	}
@@ -1260,7 +1260,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (rc io.Read
 		return o.Object.Open(ctx, options...)
 	}
 	// Get offset and limit from OpenOptions, pass the rest to the underlying remote
-	var openOptions = []fs.OpenOption{&fs.SeekOption{Offset: 0}}
+	var openOptions []fs.OpenOption = []fs.OpenOption{&fs.SeekOption{Offset: 0}}
 	var offset, limit int64 = 0, -1
 	for _, option := range options {
 		switch x := option.(type) {
--- a/backend/crypt/cipher.go
+++ b/backend/crypt/cipher.go
@@ -7,8 +7,6 @@ import (
 	gocipher "crypto/cipher"
 	"crypto/rand"
 	"encoding/base32"
-	"encoding/base64"
-	"errors"
 	"fmt"
 	"io"
 	"strconv"
@@ -17,7 +15,7 @@ import (
 	"time"
 	"unicode/utf8"

-	"github.com/Max-Sum/base32768"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/crypt/pkcs7"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
@@ -96,12 +94,12 @@ func NewNameEncryptionMode(s string) (mode NameEncryptionMode, err error) {
 	case "obfuscate":
 		mode = NameEncryptionObfuscated
 	default:
-		err = fmt.Errorf("Unknown file name encryption mode %q", s)
+		err = errors.Errorf("Unknown file name encryption mode %q", s)
 	}
 	return mode, err
 }

-// String turns mode into a human-readable string
+// String turns mode into a human readable string
 func (mode NameEncryptionMode) String() (out string) {
 	switch mode {
 	case NameEncryptionOff:
@@ -116,57 +114,6 @@ func (mode NameEncryptionMode) String() (out string) {
 	return out
 }

-// fileNameEncoding are the encoding methods dealing with encrypted file names
-type fileNameEncoding interface {
-	EncodeToString(src []byte) string
-	DecodeString(s string) ([]byte, error)
-}
-
-// caseInsensitiveBase32Encoding defines a file name encoding
-// using a modified version of standard base32 as described in
-// RFC4648
-//
-// The standard encoding is modified in two ways
-//  * it becomes lower case (no-one likes upper case filenames!)
-//  * we strip the padding character `=`
-type caseInsensitiveBase32Encoding struct{}
-
-// EncodeToString encodes a strign using the modified version of
-// base32 encoding.
-func (caseInsensitiveBase32Encoding) EncodeToString(src []byte) string {
-	encoded := base32.HexEncoding.EncodeToString(src)
-	encoded = strings.TrimRight(encoded, "=")
-	return strings.ToLower(encoded)
-}
-
-// DecodeString decodes a string as encoded by EncodeToString
-func (caseInsensitiveBase32Encoding) DecodeString(s string) ([]byte, error) {
-	if strings.HasSuffix(s, "=") {
-		return nil, ErrorBadBase32Encoding
-	}
-	// First figure out how many padding characters to add
-	roundUpToMultipleOf8 := (len(s) + 7) &^ 7
-	equals := roundUpToMultipleOf8 - len(s)
-	s = strings.ToUpper(s) + "========"[:equals]
-	return base32.HexEncoding.DecodeString(s)
-}
-
-// NewNameEncoding creates a NameEncoding from a string
-func NewNameEncoding(s string) (enc fileNameEncoding, err error) {
-	s = strings.ToLower(s)
-	switch s {
-	case "base32":
-		enc = caseInsensitiveBase32Encoding{}
-	case "base64":
-		enc = base64.RawURLEncoding
-	case "base32768":
-		enc = base32768.SafeEncoding
-	default:
-		err = fmt.Errorf("Unknown file name encoding mode %q", s)
-	}
-	return enc, err
-}
-
 // Cipher defines an encoding and decoding cipher for the crypt backend
 type Cipher struct {
 	dataKey        [32]byte                  // Key for secretbox
@@ -174,17 +121,15 @@ type Cipher struct {
 	nameTweak      [nameCipherBlockSize]byte // used to tweak the name crypto
 	block          gocipher.Block
 	mode           NameEncryptionMode
-	fileNameEnc    fileNameEncoding
 	buffers        sync.Pool // encrypt/decrypt buffers
 	cryptoRand     io.Reader // read crypto random numbers from here
 	dirNameEncrypt bool
 }

 // newCipher initialises the cipher.  If salt is "" then it uses a built in salt val
-func newCipher(mode NameEncryptionMode, password, salt string, dirNameEncrypt bool, enc fileNameEncoding) (*Cipher, error) {
+func newCipher(mode NameEncryptionMode, password, salt string, dirNameEncrypt bool) (*Cipher, error) {
 	c := &Cipher{
 		mode:           mode,
-		fileNameEnc:    enc,
 		cryptoRand:     rand.Reader,
 		dirNameEncrypt: dirNameEncrypt,
 	}
@@ -242,6 +187,30 @@ func (c *Cipher) putBlock(buf []byte) {
 	c.buffers.Put(buf)
 }

+// encodeFileName encodes a filename using a modified version of
+// standard base32 as described in RFC4648
+//
+// The standard encoding is modified in two ways
+//  * it becomes lower case (no-one likes upper case filenames!)
+//  * we strip the padding character `=`
+func encodeFileName(in []byte) string {
+	encoded := base32.HexEncoding.EncodeToString(in)
+	encoded = strings.TrimRight(encoded, "=")
+	return strings.ToLower(encoded)
+}
+
+// decodeFileName decodes a filename as encoded by encodeFileName
+func decodeFileName(in string) ([]byte, error) {
+	if strings.HasSuffix(in, "=") {
+		return nil, ErrorBadBase32Encoding
+	}
+	// First figure out how many padding characters to add
+	roundUpToMultipleOf8 := (len(in) + 7) &^ 7
+	equals := roundUpToMultipleOf8 - len(in)
+	in = strings.ToUpper(in) + "========"[:equals]
+	return base32.HexEncoding.DecodeString(in)
+}
+
 // encryptSegment encrypts a path segment
 //
 // This uses EME with AES
@@ -262,7 +231,7 @@ func (c *Cipher) encryptSegment(plaintext string) string {
 	}
 	paddedPlaintext := pkcs7.Pad(nameCipherBlockSize, []byte(plaintext))
 	ciphertext := eme.Transform(c.block, c.nameTweak[:], paddedPlaintext, eme.DirectionEncrypt)
-	return c.fileNameEnc.EncodeToString(ciphertext)
+	return encodeFileName(ciphertext)
 }

 // decryptSegment decrypts a path segment
@@ -270,7 +239,7 @@ func (c *Cipher) decryptSegment(ciphertext string) (string, error) {
 	if ciphertext == "" {
 		return "", nil
 	}
-	rawCiphertext, err := c.fileNameEnc.DecodeString(ciphertext)
+	rawCiphertext, err := decodeFileName(ciphertext)
 	if err != nil {
 		return "", err
 	}
@@ -611,7 +580,7 @@ func (n *nonce) pointer() *[fileNonceSize]byte {
 func (n *nonce) fromReader(in io.Reader) error {
 	read, err := io.ReadFull(in, (*n)[:])
 	if read != fileNonceSize {
-		return fmt.Errorf("short read of nonce: %w", err)
+		return errors.Wrap(err, "short read of nonce")
 	}
 	return nil
 }
@@ -987,7 +956,7 @@ func (fh *decrypter) RangeSeek(ctx context.Context, offset int64, whence int, li
 		// Re-open the underlying object with the offset given
 		rc, err := fh.open(ctx, underlyingOffset, underlyingLimit)
 		if err != nil {
-			return 0, fh.finish(fmt.Errorf("couldn't reopen file with offset and limit: %w", err))
+			return 0, fh.finish(errors.Wrap(err, "couldn't reopen file with offset and limit"))
 		}

 		// Set the file handle
--- a/backend/crypt/cipher_test.go
+++ b/backend/crypt/cipher_test.go
@@ -4,15 +4,13 @@ import (
 	"bytes"
 	"context"
 	"encoding/base32"
-	"encoding/base64"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
 	"strings"
 	"testing"

-	"github.com/Max-Sum/base32768"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/crypt/pkcs7"
 	"github.com/rclone/rclone/lib/readers"
 	"github.com/stretchr/testify/assert"
@@ -47,31 +45,11 @@ func TestNewNameEncryptionModeString(t *testing.T) {
 	assert.Equal(t, NameEncryptionMode(3).String(), "Unknown mode #3")
 }

-type EncodingTestCase struct {
-	in       string
-	expected string
-}
-
-func testEncodeFileName(t *testing.T, encoding string, testCases []EncodingTestCase, caseInsensitive bool) {
-	for _, test := range testCases {
-		enc, err := NewNameEncoding(encoding)
-		assert.NoError(t, err, "There should be no error creating name encoder for base32.")
-		actual := enc.EncodeToString([]byte(test.in))
-		assert.Equal(t, actual, test.expected, fmt.Sprintf("in=%q", test.in))
-		recovered, err := enc.DecodeString(test.expected)
-		assert.NoError(t, err)
-		assert.Equal(t, string(recovered), test.in, fmt.Sprintf("reverse=%q", test.expected))
-		if caseInsensitive {
-			in := strings.ToUpper(test.expected)
-			recovered, err = enc.DecodeString(in)
-			assert.NoError(t, err)
-			assert.Equal(t, string(recovered), test.in, fmt.Sprintf("reverse=%q", in))
-		}
-	}
-}
-
-func TestEncodeFileNameBase32(t *testing.T) {
-	testEncodeFileName(t, "base32", []EncodingTestCase{
+func TestEncodeFileName(t *testing.T) {
+	for _, test := range []struct {
+		in       string
+		expected string
+	}{
 		{"", ""},
 		{"1", "64"},
 		{"12", "64p0"},
@@ -89,56 +67,20 @@ func TestEncodeFileNameBase32(t *testing.T) {
 		{"12345678901234", "64p36d1l6orjge9g64p36d0"},
 		{"123456789012345", "64p36d1l6orjge9g64p36d1l"},
 		{"1234567890123456", "64p36d1l6orjge9g64p36d1l6o"},
-	}, true)
+	} {
+		actual := encodeFileName([]byte(test.in))
+		assert.Equal(t, actual, test.expected, fmt.Sprintf("in=%q", test.in))
+		recovered, err := decodeFileName(test.expected)
+		assert.NoError(t, err)
+		assert.Equal(t, string(recovered), test.in, fmt.Sprintf("reverse=%q", test.expected))
+		in := strings.ToUpper(test.expected)
+		recovered, err = decodeFileName(in)
+		assert.NoError(t, err)
+		assert.Equal(t, string(recovered), test.in, fmt.Sprintf("reverse=%q", in))
+	}
 }

-func TestEncodeFileNameBase64(t *testing.T) {
-	testEncodeFileName(t, "base64", []EncodingTestCase{
-		{"", ""},
-		{"1", "MQ"},
-		{"12", "MTI"},
-		{"123", "MTIz"},
-		{"1234", "MTIzNA"},
-		{"12345", "MTIzNDU"},
-		{"123456", "MTIzNDU2"},
-		{"1234567", "MTIzNDU2Nw"},
-		{"12345678", "MTIzNDU2Nzg"},
-		{"123456789", "MTIzNDU2Nzg5"},
-		{"1234567890", "MTIzNDU2Nzg5MA"},
-		{"12345678901", "MTIzNDU2Nzg5MDE"},
-		{"123456789012", "MTIzNDU2Nzg5MDEy"},
-		{"1234567890123", "MTIzNDU2Nzg5MDEyMw"},
-		{"12345678901234", "MTIzNDU2Nzg5MDEyMzQ"},
-		{"123456789012345", "MTIzNDU2Nzg5MDEyMzQ1"},
-		{"1234567890123456", "MTIzNDU2Nzg5MDEyMzQ1Ng"},
-	}, false)
-}
-
-func TestEncodeFileNameBase32768(t *testing.T) {
-	testEncodeFileName(t, "base32768", []EncodingTestCase{
-		{"", ""},
-		{"1", "㼿"},
-		{"12", "㻙ɟ"},
-		{"123", "㻙ⲿ"},
-		{"1234", "㻙ⲍƟ"},
-		{"12345", "㻙ⲍ⍟"},
-		{"123456", "㻙ⲍ⍆ʏ"},
-		{"1234567", "㻙ⲍ⍆觟"},
-		{"12345678", "㻙ⲍ⍆觓ɧ"},
-		{"123456789", "㻙ⲍ⍆觓栯"},
-		{"1234567890", "㻙ⲍ⍆觓栩ɣ"},
-		{"12345678901", "㻙ⲍ⍆觓栩朧"},
-		{"123456789012", "㻙ⲍ⍆觓栩朤ʅ"},
-		{"1234567890123", "㻙ⲍ⍆觓栩朤談"},
-		{"12345678901234", "㻙ⲍ⍆觓栩朤諆ɔ"},
-		{"123456789012345", "㻙ⲍ⍆觓栩朤諆媕"},
-		{"1234567890123456", "㻙ⲍ⍆觓栩朤諆媕䆿"},
-	}, false)
-}
-
-func TestDecodeFileNameBase32(t *testing.T) {
-	enc, err := NewNameEncoding("base32")
-	assert.NoError(t, err, "There should be no error creating name encoder for base32.")
+func TestDecodeFileName(t *testing.T) {
 	// We've tested decoding the valid ones above, now concentrate on the invalid ones
 	for _, test := range []struct {
 		in          string
@@ -148,65 +90,17 @@ func TestDecodeFileNameBase32(t *testing.T) {
 		{"!", base32.CorruptInputError(0)},
 		{"hello=hello", base32.CorruptInputError(5)},
 	} {
-		actual, actualErr := enc.DecodeString(test.in)
+		actual, actualErr := decodeFileName(test.in)
 		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
 	}
 }

-func TestDecodeFileNameBase64(t *testing.T) {
-	enc, err := NewNameEncoding("base64")
-	assert.NoError(t, err, "There should be no error creating name encoder for base32.")
-	// We've tested decoding the valid ones above, now concentrate on the invalid ones
+func TestEncryptSegment(t *testing.T) {
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
 	for _, test := range []struct {
-		in          string
-		expectedErr error
+		in       string
+		expected string
 	}{
-		{"64=", base64.CorruptInputError(2)},
-		{"!", base64.CorruptInputError(0)},
-		{"Hello=Hello", base64.CorruptInputError(5)},
-	} {
-		actual, actualErr := enc.DecodeString(test.in)
-		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
-	}
-}
-
-func TestDecodeFileNameBase32768(t *testing.T) {
-	enc, err := NewNameEncoding("base32768")
-	assert.NoError(t, err, "There should be no error creating name encoder for base32.")
-	// We've tested decoding the valid ones above, now concentrate on the invalid ones
-	for _, test := range []struct {
-		in          string
-		expectedErr error
-	}{
-		{"㼿c", base32768.CorruptInputError(1)},
-		{"!", base32768.CorruptInputError(0)},
-		{"㻙ⲿ=㻙ⲿ", base32768.CorruptInputError(2)},
-	} {
-		actual, actualErr := enc.DecodeString(test.in)
-		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
-	}
-}
-
-func testEncryptSegment(t *testing.T, encoding string, testCases []EncodingTestCase, caseInsensitive bool) {
-	enc, _ := NewNameEncoding(encoding)
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-	for _, test := range testCases {
-		actual := c.encryptSegment(test.in)
-		assert.Equal(t, test.expected, actual, fmt.Sprintf("Testing %q", test.in))
-		recovered, err := c.decryptSegment(test.expected)
-		assert.NoError(t, err, fmt.Sprintf("Testing reverse %q", test.expected))
-		assert.Equal(t, test.in, recovered, fmt.Sprintf("Testing reverse %q", test.expected))
-		if caseInsensitive {
-			in := strings.ToUpper(test.expected)
-			recovered, err = c.decryptSegment(in)
-			assert.NoError(t, err, fmt.Sprintf("Testing reverse %q", in))
-			assert.Equal(t, test.in, recovered, fmt.Sprintf("Testing reverse %q", in))
-		}
-	}
-}
-
-func TestEncryptSegmentBase32(t *testing.T) {
-	testEncryptSegment(t, "base32", []EncodingTestCase{
 		{"", ""},
 		{"1", "p0e52nreeaj0a5ea7s64m4j72s"},
 		{"12", "l42g6771hnv3an9cgc8cr2n1ng"},
@@ -224,61 +118,26 @@ func TestEncryptSegmentBase32(t *testing.T) {
 		{"12345678901234", "moq0uqdlqrblrc5pa5u5c7hq9g"},
 		{"123456789012345", "eeam3li4rnommi3a762h5n7meg"},
 		{"1234567890123456", "mijbj0frqf6ms7frcr6bd9h0env53jv96pjaaoirk7forcgpt70g"},
-	}, true)
+	} {
+		actual := c.encryptSegment(test.in)
+		assert.Equal(t, test.expected, actual, fmt.Sprintf("Testing %q", test.in))
+		recovered, err := c.decryptSegment(test.expected)
+		assert.NoError(t, err, fmt.Sprintf("Testing reverse %q", test.expected))
+		assert.Equal(t, test.in, recovered, fmt.Sprintf("Testing reverse %q", test.expected))
+		in := strings.ToUpper(test.expected)
+		recovered, err = c.decryptSegment(in)
+		assert.NoError(t, err, fmt.Sprintf("Testing reverse %q", in))
+		assert.Equal(t, test.in, recovered, fmt.Sprintf("Testing reverse %q", in))
+	}
 }

-func TestEncryptSegmentBase64(t *testing.T) {
-	testEncryptSegment(t, "base64", []EncodingTestCase{
-		{"", ""},
-		{"1", "yBxRX25ypgUVyj8MSxJnFw"},
-		{"12", "qQUDHOGN_jVdLIMQzYrhvA"},
-		{"123", "1CxFf2Mti1xIPYlGruDh-A"},
-		{"1234", "RL-xOTmsxsG7kuTy2XJUxw"},
-		{"12345", "3FP_GHoeBJdq0yLgaED8IQ"},
-		{"123456", "Xc4T1Gqrs3OVYnrE6dpEWQ"},
-		{"1234567", "uZeEzssOnDWHEOzLqjwpog"},
-		{"12345678", "8noiTP5WkkbEuijsPhOpxQ"},
-		{"123456789", "GeNxgLA0wiaGAKU3U7qL4Q"},
-		{"1234567890", "x1DUhdmqoVWYVBLD3dha-A"},
-		{"12345678901", "iEyP_3BZR6vvv_2WM6NbZw"},
-		{"123456789012", "4OPGvS4SZdjvS568APUaFw"},
-		{"1234567890123", "Y8c5Wr8OhYYUo7fPwdojdg"},
-		{"12345678901234", "tjQPabXW112wuVF8Vh46TA"},
-		{"123456789012345", "c5Vh1kTd8WtIajmFEtz2dA"},
-		{"1234567890123456", "tKa5gfvTzW4d-2bMtqYgdf5Rz-k2ZqViW6HfjbIZ6cE"},
-	}, false)
-}
-
-func TestEncryptSegmentBase32768(t *testing.T) {
-	testEncryptSegment(t, "base32768", []EncodingTestCase{
-		{"", ""},
-		{"1", "詮㪗鐮僀伎作㻖㢧⪟"},
-		{"12", "竢朧䉱虃光塬䟛⣡蓟"},
-		{"123", "遶㞟鋅缕袡鲅ⵝ蝁ꌟ"},
-		{"1234", "䢟銮䵵狌㐜燳谒颴詟"},
-		{"12345", "钉Ꞇ㖃蚩憶狫朰杜㜿"},
-		{"123456", "啇ᚵⵕ憗䋫➫➓肤卟"},
-		{"1234567", "茫螓翁連劘樓㶔抉矟"},
-		{"12345678", "龝☳䘊辄岅較络㧩襟"},
-		{"123456789", "ⲱ苀㱆犂媐Ꮤ锇惫靟"},
-		{"1234567890", "計宁憕偵匢皫╛纺ꌟ"},
-		{"12345678901", "檆䨿鑫㪺藝ꡖ勇䦛婟"},
-		{"123456789012", "雑頏䰂䲝淚哚鹡魺⪟"},
-		{"1234567890123", "塃璶繁躸圅㔟䗃肃懟"},
-		{"12345678901234", "腺ᕚ崚鏕鏥讥鼌䑺䲿"},
-		{"123456789012345", "怪绕滻蕶肣但⠥荖惟"},
-		{"1234567890123456", "肳哀旚挶靏鏻㾭䱠慟㪳ꏆ賊兲铧敻塹魀ʟ"},
-	}, false)
-}
-
-func TestDecryptSegmentBase32(t *testing.T) {
+func TestDecryptSegment(t *testing.T) {
 	// We've tested the forwards above, now concentrate on the errors
 	longName := make([]byte, 3328)
 	for i := range longName {
 		longName[i] = 'a'
 	}
-	enc, _ := NewNameEncoding("base32")
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
 	for _, test := range []struct {
 		in          string
 		expectedErr error
@@ -286,371 +145,49 @@ func TestDecryptSegmentBase32(t *testing.T) {
 		{"64=", ErrorBadBase32Encoding},
 		{"!", base32.CorruptInputError(0)},
 		{string(longName), ErrorTooLongAfterDecode},
-		{enc.EncodeToString([]byte("a")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef0")), pkcs7.ErrorPaddingTooLong},
+		{encodeFileName([]byte("a")), ErrorNotAMultipleOfBlocksize},
+		{encodeFileName([]byte("123456789abcdef")), ErrorNotAMultipleOfBlocksize},
+		{encodeFileName([]byte("123456789abcdef0")), pkcs7.ErrorPaddingTooLong},
 	} {
 		actual, actualErr := c.decryptSegment(test.in)
 		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
 	}
 }

-func TestDecryptSegmentBase64(t *testing.T) {
-	// We've tested the forwards above, now concentrate on the errors
-	longName := make([]byte, 2816)
-	for i := range longName {
-		longName[i] = 'a'
-	}
-	enc, _ := NewNameEncoding("base64")
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-	for _, test := range []struct {
-		in          string
-		expectedErr error
-	}{
-		{"6H=", base64.CorruptInputError(2)},
-		{"!", base64.CorruptInputError(0)},
-		{string(longName), ErrorTooLongAfterDecode},
-		{enc.EncodeToString([]byte("a")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef0")), pkcs7.ErrorPaddingTooLong},
-	} {
-		actual, actualErr := c.decryptSegment(test.in)
-		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
-	}
-}
-
-func TestDecryptSegmentBase32768(t *testing.T) {
-	// We've tested the forwards above, now concentrate on the errors
-	longName := strings.Repeat("怪", 1280)
-	enc, _ := NewNameEncoding("base32768")
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-	for _, test := range []struct {
-		in          string
-		expectedErr error
-	}{
-		{"怪=", base32768.CorruptInputError(1)},
-		{"!", base32768.CorruptInputError(0)},
-		{longName, ErrorTooLongAfterDecode},
-		{enc.EncodeToString([]byte("a")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef")), ErrorNotAMultipleOfBlocksize},
-		{enc.EncodeToString([]byte("123456789abcdef0")), pkcs7.ErrorPaddingTooLong},
-	} {
-		actual, actualErr := c.decryptSegment(test.in)
-		assert.Equal(t, test.expectedErr, actualErr, fmt.Sprintf("in=%q got actual=%q, err = %v %T", test.in, actual, actualErr, actualErr))
-	}
-}
-
-func testStandardEncryptFileName(t *testing.T, encoding string, testCasesEncryptDir []EncodingTestCase, testCasesNoEncryptDir []EncodingTestCase) {
+func TestEncryptFileName(t *testing.T) {
 	// First standard mode
-	enc, _ := NewNameEncoding(encoding)
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-	for _, test := range testCasesEncryptDir {
-		assert.Equal(t, test.expected, c.EncryptFileName(test.in))
-	}
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s", c.EncryptFileName("1"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", c.EncryptFileName("1/12"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", c.EncryptFileName("1/12/123"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s-v2001-02-03-040506-123", c.EncryptFileName("1-v2001-02-03-040506-123"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng-v2001-02-03-040506-123", c.EncryptFileName("1/12-v2001-02-03-040506-123"))
 	// Standard mode with directory name encryption off
-	c, _ = newCipher(NameEncryptionStandard, "", "", false, enc)
-	for _, test := range testCasesNoEncryptDir {
-		assert.Equal(t, test.expected, c.EncryptFileName(test.in))
-	}
-}
-
-func TestStandardEncryptFileNameBase32(t *testing.T) {
-	testStandardEncryptFileName(t, "base32", []EncodingTestCase{
-		{"1", "p0e52nreeaj0a5ea7s64m4j72s"},
-		{"1/12", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng"},
-		{"1/12/123", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0"},
-		{"1-v2001-02-03-040506-123", "p0e52nreeaj0a5ea7s64m4j72s-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng-v2001-02-03-040506-123"},
-	}, []EncodingTestCase{
-		{"1", "p0e52nreeaj0a5ea7s64m4j72s"},
-		{"1/12", "1/l42g6771hnv3an9cgc8cr2n1ng"},
-		{"1/12/123", "1/12/qgm4avr35m5loi1th53ato71v0"},
-		{"1-v2001-02-03-040506-123", "p0e52nreeaj0a5ea7s64m4j72s-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "1/l42g6771hnv3an9cgc8cr2n1ng-v2001-02-03-040506-123"},
-	})
-}
-
-func TestStandardEncryptFileNameBase64(t *testing.T) {
-	testStandardEncryptFileName(t, "base64", []EncodingTestCase{
-		{"1", "yBxRX25ypgUVyj8MSxJnFw"},
-		{"1/12", "yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA"},
-		{"1/12/123", "yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA/1CxFf2Mti1xIPYlGruDh-A"},
-		{"1-v2001-02-03-040506-123", "yBxRX25ypgUVyj8MSxJnFw-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA-v2001-02-03-040506-123"},
-	}, []EncodingTestCase{
-		{"1", "yBxRX25ypgUVyj8MSxJnFw"},
-		{"1/12", "1/qQUDHOGN_jVdLIMQzYrhvA"},
-		{"1/12/123", "1/12/1CxFf2Mti1xIPYlGruDh-A"},
-		{"1-v2001-02-03-040506-123", "yBxRX25ypgUVyj8MSxJnFw-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "1/qQUDHOGN_jVdLIMQzYrhvA-v2001-02-03-040506-123"},
-	})
-}
-
-func TestStandardEncryptFileNameBase32768(t *testing.T) {
-	testStandardEncryptFileName(t, "base32768", []EncodingTestCase{
-		{"1", "詮㪗鐮僀伎作㻖㢧⪟"},
-		{"1/12", "詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟"},
-		{"1/12/123", "詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟/遶㞟鋅缕袡鲅ⵝ蝁ꌟ"},
-		{"1-v2001-02-03-040506-123", "詮㪗鐮僀伎作㻖㢧⪟-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟-v2001-02-03-040506-123"},
-	}, []EncodingTestCase{
-		{"1", "詮㪗鐮僀伎作㻖㢧⪟"},
-		{"1/12", "1/竢朧䉱虃光塬䟛⣡蓟"},
-		{"1/12/123", "1/12/遶㞟鋅缕袡鲅ⵝ蝁ꌟ"},
-		{"1-v2001-02-03-040506-123", "詮㪗鐮僀伎作㻖㢧⪟-v2001-02-03-040506-123"},
-		{"1/12-v2001-02-03-040506-123", "1/竢朧䉱虃光塬䟛⣡蓟-v2001-02-03-040506-123"},
-	})
-}
-
-func TestNonStandardEncryptFileName(t *testing.T) {
-	// Off mode
-	c, _ := newCipher(NameEncryptionOff, "", "", true, nil)
+	c, _ = newCipher(NameEncryptionStandard, "", "", false)
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s", c.EncryptFileName("1"))
+	assert.Equal(t, "1/l42g6771hnv3an9cgc8cr2n1ng", c.EncryptFileName("1/12"))
+	assert.Equal(t, "1/12/qgm4avr35m5loi1th53ato71v0", c.EncryptFileName("1/12/123"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s-v2001-02-03-040506-123", c.EncryptFileName("1-v2001-02-03-040506-123"))
+	assert.Equal(t, "1/l42g6771hnv3an9cgc8cr2n1ng-v2001-02-03-040506-123", c.EncryptFileName("1/12-v2001-02-03-040506-123"))
+	// Now off mode
+	c, _ = newCipher(NameEncryptionOff, "", "", true)
 	assert.Equal(t, "1/12/123.bin", c.EncryptFileName("1/12/123"))
 	// Obfuscation mode
-	c, _ = newCipher(NameEncryptionObfuscated, "", "", true, nil)
+	c, _ = newCipher(NameEncryptionObfuscated, "", "", true)
 	assert.Equal(t, "49.6/99.23/150.890/53.!!lipps", c.EncryptFileName("1/12/123/!hello"))
 	assert.Equal(t, "49.6/99.23/150.890/53-v2001-02-03-040506-123.!!lipps", c.EncryptFileName("1/12/123/!hello-v2001-02-03-040506-123"))
 	assert.Equal(t, "49.6/99.23/150.890/162.uryyB-v2001-02-03-040506-123.GKG", c.EncryptFileName("1/12/123/hello-v2001-02-03-040506-123.txt"))
 	assert.Equal(t, "161.\u00e4", c.EncryptFileName("\u00a1"))
 	assert.Equal(t, "160.\u03c2", c.EncryptFileName("\u03a0"))
 	// Obfuscation mode with directory name encryption off
-	c, _ = newCipher(NameEncryptionObfuscated, "", "", false, nil)
+	c, _ = newCipher(NameEncryptionObfuscated, "", "", false)
 	assert.Equal(t, "1/12/123/53.!!lipps", c.EncryptFileName("1/12/123/!hello"))
 	assert.Equal(t, "1/12/123/53-v2001-02-03-040506-123.!!lipps", c.EncryptFileName("1/12/123/!hello-v2001-02-03-040506-123"))
 	assert.Equal(t, "161.\u00e4", c.EncryptFileName("\u00a1"))
 	assert.Equal(t, "160.\u03c2", c.EncryptFileName("\u03a0"))
 }

-func testStandardDecryptFileName(t *testing.T, encoding string, testCases []EncodingTestCase, caseInsensitive bool) {
-	enc, _ := NewNameEncoding(encoding)
-	for _, test := range testCases {
-		// Test when dirNameEncrypt=true
-		c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-		actual, actualErr := c.DecryptFileName(test.in)
-		assert.NoError(t, actualErr)
-		assert.Equal(t, test.expected, actual)
-		if caseInsensitive {
-			c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-			actual, actualErr := c.DecryptFileName(strings.ToUpper(test.in))
-			assert.NoError(t, actualErr)
-			assert.Equal(t, test.expected, actual)
-		}
-		// Add a character should raise ErrorNotAMultipleOfBlocksize
-		actual, actualErr = c.DecryptFileName(enc.EncodeToString([]byte("1")) + test.in)
-		assert.Equal(t, ErrorNotAMultipleOfBlocksize, actualErr)
-		assert.Equal(t, "", actual)
-		// Test when dirNameEncrypt=false
-		noDirEncryptIn := test.in
-		if strings.LastIndex(test.expected, "/") != -1 {
-			noDirEncryptIn = test.expected[:strings.LastIndex(test.expected, "/")] + test.in[strings.LastIndex(test.in, "/"):]
-		}
-		c, _ = newCipher(NameEncryptionStandard, "", "", false, enc)
-		actual, actualErr = c.DecryptFileName(noDirEncryptIn)
-		assert.NoError(t, actualErr)
-		assert.Equal(t, test.expected, actual)
-	}
-}
-
-func TestStandardDecryptFileNameBase32(t *testing.T) {
-	testStandardDecryptFileName(t, "base32", []EncodingTestCase{
-		{"p0e52nreeaj0a5ea7s64m4j72s", "1"},
-		{"p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "1/12"},
-		{"p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", "1/12/123"},
-	}, true)
-}
-
-func TestStandardDecryptFileNameBase64(t *testing.T) {
-	testStandardDecryptFileName(t, "base64", []EncodingTestCase{
-		{"yBxRX25ypgUVyj8MSxJnFw", "1"},
-		{"yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA", "1/12"},
-		{"yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA/1CxFf2Mti1xIPYlGruDh-A", "1/12/123"},
-	}, false)
-}
-
-func TestStandardDecryptFileNameBase32768(t *testing.T) {
-	testStandardDecryptFileName(t, "base32768", []EncodingTestCase{
-		{"詮㪗鐮僀伎作㻖㢧⪟", "1"},
-		{"詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟", "1/12"},
-		{"詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟/遶㞟鋅缕袡鲅ⵝ蝁ꌟ", "1/12/123"},
-	}, false)
-}
-
-func TestNonStandardDecryptFileName(t *testing.T) {
-	for _, encoding := range []string{"base32", "base64", "base32768"} {
-		enc, _ := NewNameEncoding(encoding)
-		for _, test := range []struct {
-			mode           NameEncryptionMode
-			dirNameEncrypt bool
-			in             string
-			expected       string
-			expectedErr    error
-		}{
-			{NameEncryptionOff, true, "1/12/123.bin", "1/12/123", nil},
-			{NameEncryptionOff, true, "1/12/123.bix", "", ErrorNotAnEncryptedFile},
-			{NameEncryptionOff, true, ".bin", "", ErrorNotAnEncryptedFile},
-			{NameEncryptionOff, true, "1/12/123-v2001-02-03-040506-123.bin", "1/12/123-v2001-02-03-040506-123", nil},
-			{NameEncryptionOff, true, "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.bin", "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123", nil},
-			{NameEncryptionOff, true, "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.txt.bin", "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.txt", nil},
-			{NameEncryptionObfuscated, true, "!.hello", "hello", nil},
-			{NameEncryptionObfuscated, true, "hello", "", ErrorNotAnEncryptedFile},
-			{NameEncryptionObfuscated, true, "161.\u00e4", "\u00a1", nil},
-			{NameEncryptionObfuscated, true, "160.\u03c2", "\u03a0", nil},
-			{NameEncryptionObfuscated, false, "1/12/123/53.!!lipps", "1/12/123/!hello", nil},
-			{NameEncryptionObfuscated, false, "1/12/123/53-v2001-02-03-040506-123.!!lipps", "1/12/123/!hello-v2001-02-03-040506-123", nil},
-		} {
-			c, _ := newCipher(test.mode, "", "", test.dirNameEncrypt, enc)
-			actual, actualErr := c.DecryptFileName(test.in)
-			what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
-			assert.Equal(t, test.expected, actual, what)
-			assert.Equal(t, test.expectedErr, actualErr, what)
-		}
-	}
-}
-
-func TestEncDecMatches(t *testing.T) {
-	for _, encoding := range []string{"base32", "base64", "base32768"} {
-		enc, _ := NewNameEncoding(encoding)
-		for _, test := range []struct {
-			mode NameEncryptionMode
-			in   string
-		}{
-			{NameEncryptionStandard, "1/2/3/4"},
-			{NameEncryptionOff, "1/2/3/4"},
-			{NameEncryptionObfuscated, "1/2/3/4/!hello\u03a0"},
-			{NameEncryptionObfuscated, "Avatar The Last Airbender"},
-		} {
-			c, _ := newCipher(test.mode, "", "", true, enc)
-			out, err := c.DecryptFileName(c.EncryptFileName(test.in))
-			what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
-			assert.Equal(t, out, test.in, what)
-			assert.Equal(t, err, nil, what)
-		}
-	}
-}
-
-func testStandardEncryptDirName(t *testing.T, encoding string, testCases []EncodingTestCase) {
-	enc, _ := NewNameEncoding(encoding)
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-	// First standard mode
-	for _, test := range testCases {
-		assert.Equal(t, test.expected, c.EncryptDirName(test.in))
-	}
-}
-
-func TestStandardEncryptDirNameBase32(t *testing.T) {
-	testStandardEncryptDirName(t, "base32", []EncodingTestCase{
-		{"1", "p0e52nreeaj0a5ea7s64m4j72s"},
-		{"1/12", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng"},
-		{"1/12/123", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0"},
-	})
-}
-
-func TestStandardEncryptDirNameBase64(t *testing.T) {
-	testStandardEncryptDirName(t, "base64", []EncodingTestCase{
-		{"1", "yBxRX25ypgUVyj8MSxJnFw"},
-		{"1/12", "yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA"},
-		{"1/12/123", "yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA/1CxFf2Mti1xIPYlGruDh-A"},
-	})
-}
-
-func TestStandardEncryptDirNameBase32768(t *testing.T) {
-	testStandardEncryptDirName(t, "base32768", []EncodingTestCase{
-		{"1", "詮㪗鐮僀伎作㻖㢧⪟"},
-		{"1/12", "詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟"},
-		{"1/12/123", "詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟/遶㞟鋅缕袡鲅ⵝ蝁ꌟ"},
-	})
-}
-
-func TestNonStandardEncryptDirName(t *testing.T) {
-	for _, encoding := range []string{"base32", "base64", "base32768"} {
-		enc, _ := NewNameEncoding(encoding)
-		c, _ := newCipher(NameEncryptionStandard, "", "", false, enc)
-		assert.Equal(t, "1/12", c.EncryptDirName("1/12"))
-		assert.Equal(t, "1/12/123", c.EncryptDirName("1/12/123"))
-		// Now off mode
-		c, _ = newCipher(NameEncryptionOff, "", "", true, enc)
-		assert.Equal(t, "1/12/123", c.EncryptDirName("1/12/123"))
-	}
-}
-
-func testStandardDecryptDirName(t *testing.T, encoding string, testCases []EncodingTestCase, caseInsensitive bool) {
-	enc, _ := NewNameEncoding(encoding)
-	for _, test := range testCases {
-		// Test dirNameEncrypt=true
-		c, _ := newCipher(NameEncryptionStandard, "", "", true, enc)
-		actual, actualErr := c.DecryptDirName(test.in)
-		assert.Equal(t, test.expected, actual)
-		assert.NoError(t, actualErr)
-		if caseInsensitive {
-			actual, actualErr := c.DecryptDirName(strings.ToUpper(test.in))
-			assert.Equal(t, actual, test.expected)
-			assert.NoError(t, actualErr)
-		}
-		actual, actualErr = c.DecryptDirName(enc.EncodeToString([]byte("1")) + test.in)
-		assert.Equal(t, "", actual)
-		assert.Equal(t, ErrorNotAMultipleOfBlocksize, actualErr)
-		// Test dirNameEncrypt=false
-		c, _ = newCipher(NameEncryptionStandard, "", "", false, enc)
-		actual, actualErr = c.DecryptDirName(test.in)
-		assert.Equal(t, test.in, actual)
-		assert.NoError(t, actualErr)
-		actual, actualErr = c.DecryptDirName(test.expected)
-		assert.Equal(t, test.expected, actual)
-		assert.NoError(t, actualErr)
-		// Test dirNameEncrypt=false
-	}
-}
-
-/*
-enc, _ := NewNameEncoding(encoding)
-for _, test := range []struct {
-	mode           NameEncryptionMode
-	dirNameEncrypt bool
-	in             string
-	expected       string
-	expectedErr    error
-}{
-	{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s", "1", nil},
-	{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "1/12", nil},
-	{NameEncryptionStandard, true, "p0e52nreeAJ0A5EA7S64M4J72S/L42G6771HNv3an9cgc8cr2n1ng", "1/12", nil},
-	{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", "1/12/123", nil},
-	{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1/qgm4avr35m5loi1th53ato71v0", "", ErrorNotAMultipleOfBlocksize},
-	{NameEncryptionStandard, false, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", nil},
-	{NameEncryptionStandard, false, "1/12/123", "1/12/123", nil},
-} {
-	c, _ := newCipher(test.mode, "", "", test.dirNameEncrypt, enc)
-	actual, actualErr := c.DecryptDirName(test.in)
-	what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
-	assert.Equal(t, test.expected, actual, what)
-	assert.Equal(t, test.expectedErr, actualErr, what)
-}
-*/
-
-func TestStandardDecryptDirNameBase32(t *testing.T) {
-	testStandardDecryptDirName(t, "base32", []EncodingTestCase{
-		{"p0e52nreeaj0a5ea7s64m4j72s", "1"},
-		{"p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "1/12"},
-		{"p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", "1/12/123"},
-	}, true)
-}
-
-func TestStandardDecryptDirNameBase64(t *testing.T) {
-	testStandardDecryptDirName(t, "base64", []EncodingTestCase{
-		{"yBxRX25ypgUVyj8MSxJnFw", "1"},
-		{"yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA", "1/12"},
-		{"yBxRX25ypgUVyj8MSxJnFw/qQUDHOGN_jVdLIMQzYrhvA/1CxFf2Mti1xIPYlGruDh-A", "1/12/123"},
-	}, false)
-}
-
-func TestStandardDecryptDirNameBase32768(t *testing.T) {
-	testStandardDecryptDirName(t, "base32768", []EncodingTestCase{
-		{"詮㪗鐮僀伎作㻖㢧⪟", "1"},
-		{"詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟", "1/12"},
-		{"詮㪗鐮僀伎作㻖㢧⪟/竢朧䉱虃光塬䟛⣡蓟/遶㞟鋅缕袡鲅ⵝ蝁ꌟ", "1/12/123"},
-	}, false)
-}
-
-func TestNonStandardDecryptDirName(t *testing.T) {
+func TestDecryptFileName(t *testing.T) {
 	for _, test := range []struct {
 		mode           NameEncryptionMode
 		dirNameEncrypt bool
@@ -658,11 +195,87 @@ func TestNonStandardDecryptDirName(t *testing.T) {
 		expected       string
 		expectedErr    error
 	}{
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s", "1", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "1/12", nil},
+		{NameEncryptionStandard, true, "p0e52nreeAJ0A5EA7S64M4J72S/L42G6771HNv3an9cgc8cr2n1ng", "1/12", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", "1/12/123", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1/qgm4avr35m5loi1th53ato71v0", "", ErrorNotAMultipleOfBlocksize},
+		{NameEncryptionStandard, false, "1/12/qgm4avr35m5loi1th53ato71v0", "1/12/123", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s-v2001-02-03-040506-123", "1-v2001-02-03-040506-123", nil},
+		{NameEncryptionOff, true, "1/12/123.bin", "1/12/123", nil},
+		{NameEncryptionOff, true, "1/12/123.bix", "", ErrorNotAnEncryptedFile},
+		{NameEncryptionOff, true, ".bin", "", ErrorNotAnEncryptedFile},
+		{NameEncryptionOff, true, "1/12/123-v2001-02-03-040506-123.bin", "1/12/123-v2001-02-03-040506-123", nil},
+		{NameEncryptionOff, true, "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.bin", "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123", nil},
+		{NameEncryptionOff, true, "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.txt.bin", "1/12/123-v1970-01-01-010101-123-v2001-02-03-040506-123.txt", nil},
+		{NameEncryptionObfuscated, true, "!.hello", "hello", nil},
+		{NameEncryptionObfuscated, true, "hello", "", ErrorNotAnEncryptedFile},
+		{NameEncryptionObfuscated, true, "161.\u00e4", "\u00a1", nil},
+		{NameEncryptionObfuscated, true, "160.\u03c2", "\u03a0", nil},
+		{NameEncryptionObfuscated, false, "1/12/123/53.!!lipps", "1/12/123/!hello", nil},
+		{NameEncryptionObfuscated, false, "1/12/123/53-v2001-02-03-040506-123.!!lipps", "1/12/123/!hello-v2001-02-03-040506-123", nil},
+	} {
+		c, _ := newCipher(test.mode, "", "", test.dirNameEncrypt)
+		actual, actualErr := c.DecryptFileName(test.in)
+		what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
+		assert.Equal(t, test.expected, actual, what)
+		assert.Equal(t, test.expectedErr, actualErr, what)
+	}
+}
+
+func TestEncDecMatches(t *testing.T) {
+	for _, test := range []struct {
+		mode NameEncryptionMode
+		in   string
+	}{
+		{NameEncryptionStandard, "1/2/3/4"},
+		{NameEncryptionOff, "1/2/3/4"},
+		{NameEncryptionObfuscated, "1/2/3/4/!hello\u03a0"},
+		{NameEncryptionObfuscated, "Avatar The Last Airbender"},
+	} {
+		c, _ := newCipher(test.mode, "", "", true)
+		out, err := c.DecryptFileName(c.EncryptFileName(test.in))
+		what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
+		assert.Equal(t, out, test.in, what)
+		assert.Equal(t, err, nil, what)
+	}
+}
+
+func TestEncryptDirName(t *testing.T) {
+	// First standard mode
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s", c.EncryptDirName("1"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", c.EncryptDirName("1/12"))
+	assert.Equal(t, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", c.EncryptDirName("1/12/123"))
+	// Standard mode with dir name encryption off
+	c, _ = newCipher(NameEncryptionStandard, "", "", false)
+	assert.Equal(t, "1/12", c.EncryptDirName("1/12"))
+	assert.Equal(t, "1/12/123", c.EncryptDirName("1/12/123"))
+	// Now off mode
+	c, _ = newCipher(NameEncryptionOff, "", "", true)
+	assert.Equal(t, "1/12/123", c.EncryptDirName("1/12/123"))
+}
+
+func TestDecryptDirName(t *testing.T) {
+	for _, test := range []struct {
+		mode           NameEncryptionMode
+		dirNameEncrypt bool
+		in             string
+		expected       string
+		expectedErr    error
+	}{
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s", "1", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "1/12", nil},
+		{NameEncryptionStandard, true, "p0e52nreeAJ0A5EA7S64M4J72S/L42G6771HNv3an9cgc8cr2n1ng", "1/12", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng/qgm4avr35m5loi1th53ato71v0", "1/12/123", nil},
+		{NameEncryptionStandard, true, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1/qgm4avr35m5loi1th53ato71v0", "", ErrorNotAMultipleOfBlocksize},
+		{NameEncryptionStandard, false, "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", "p0e52nreeaj0a5ea7s64m4j72s/l42g6771hnv3an9cgc8cr2n1ng", nil},
+		{NameEncryptionStandard, false, "1/12/123", "1/12/123", nil},
 		{NameEncryptionOff, true, "1/12/123.bin", "1/12/123.bin", nil},
 		{NameEncryptionOff, true, "1/12/123", "1/12/123", nil},
 		{NameEncryptionOff, true, ".bin", ".bin", nil},
 	} {
-		c, _ := newCipher(test.mode, "", "", test.dirNameEncrypt, nil)
+		c, _ := newCipher(test.mode, "", "", test.dirNameEncrypt)
 		actual, actualErr := c.DecryptDirName(test.in)
 		what := fmt.Sprintf("Testing %q (mode=%v)", test.in, test.mode)
 		assert.Equal(t, test.expected, actual, what)
@@ -671,7 +284,7 @@ func TestNonStandardDecryptDirName(t *testing.T) {
 }

 func TestEncryptedSize(t *testing.T) {
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
 	for _, test := range []struct {
 		in       int64
 		expected int64
@@ -695,7 +308,7 @@ func TestEncryptedSize(t *testing.T) {

 func TestDecryptedSize(t *testing.T) {
 	// Test the errors since we tested the reverse above
-	c, _ := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, _ := newCipher(NameEncryptionStandard, "", "", true)
 	for _, test := range []struct {
 		in          int64
 		expectedErr error
@@ -1024,7 +637,7 @@ func (r *randomSource) Read(p []byte) (n int, err error) {
 func (r *randomSource) Write(p []byte) (n int, err error) {
 	for i := range p {
 		if p[i] != r.next() {
-			return 0, fmt.Errorf("Error in stream at %d", r.counter)
+			return 0, errors.Errorf("Error in stream at %d", r.counter)
 		}
 	}
 	return len(p), nil
@@ -1066,7 +679,7 @@ func (z *zeroes) Read(p []byte) (n int, err error) {

 // Test encrypt decrypt with different buffer sizes
 func testEncryptDecrypt(t *testing.T, bufSize int, copySize int64) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)
 	c.cryptoRand = &zeroes{} // zero out the nonce
 	buf := make([]byte, bufSize)
@@ -1136,7 +749,7 @@ func TestEncryptData(t *testing.T) {
 		{[]byte{1}, file1},
 		{[]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}, file16},
 	} {
-		c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+		c, err := newCipher(NameEncryptionStandard, "", "", true)
 		assert.NoError(t, err)
 		c.cryptoRand = newRandomSource(1e8) // nodge the crypto rand generator

@@ -1159,7 +772,7 @@ func TestEncryptData(t *testing.T) {
 }

 func TestNewEncrypter(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)
 	c.cryptoRand = newRandomSource(1e8) // nodge the crypto rand generator

@@ -1175,12 +788,13 @@ func TestNewEncrypter(t *testing.T) {
 	fh, err = c.newEncrypter(z, nil)
 	assert.Nil(t, fh)
 	assert.Error(t, err, "short read of nonce")
+
 }

 // Test the stream returning 0, io.ErrUnexpectedEOF - this used to
 // cause a fatal loop
 func TestNewEncrypterErrUnexpectedEOF(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	in := &readers.ErrorReader{Err: io.ErrUnexpectedEOF}
@@ -1209,7 +823,7 @@ func (c *closeDetector) Close() error {
 }

 func TestNewDecrypter(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)
 	c.cryptoRand = newRandomSource(1e8) // nodge the crypto rand generator

@@ -1252,7 +866,7 @@ func TestNewDecrypter(t *testing.T) {

 // Test the stream returning 0, io.ErrUnexpectedEOF
 func TestNewDecrypterErrUnexpectedEOF(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	in2 := &readers.ErrorReader{Err: io.ErrUnexpectedEOF}
@@ -1268,7 +882,7 @@ func TestNewDecrypterErrUnexpectedEOF(t *testing.T) {
 }

 func TestNewDecrypterSeekLimit(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)
 	c.cryptoRand = &zeroes{} // nodge the crypto rand generator

@@ -1474,7 +1088,7 @@ func TestDecrypterCalculateUnderlying(t *testing.T) {
 }

 func TestDecrypterRead(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	// Test truncating the file at each possible point
@@ -1538,7 +1152,7 @@ func TestDecrypterRead(t *testing.T) {
 }

 func TestDecrypterClose(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	cd := newCloseDetector(bytes.NewBuffer(file16))
@@ -1576,7 +1190,7 @@ func TestDecrypterClose(t *testing.T) {
 }

 func TestPutGetBlock(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	block := c.getBlock()
@@ -1587,7 +1201,7 @@ func TestPutGetBlock(t *testing.T) {
 }

 func TestKey(t *testing.T) {
-	c, err := newCipher(NameEncryptionStandard, "", "", true, nil)
+	c, err := newCipher(NameEncryptionStandard, "", "", true)
 	assert.NoError(t, err)

 	// Check zero keys OK
--- a/backend/crypt/crypt.go
+++ b/backend/crypt/crypt.go
@@ -3,13 +3,13 @@ package crypt

 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"path"
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/cache"
@@ -30,7 +30,7 @@ func init() {
 		CommandHelp: commandHelp,
 		Options: []fs.Option{{
 			Name:     "remote",
-			Help:     "Remote to encrypt/decrypt.\n\nNormally should contain a ':' and a path, e.g. \"myremote:path/to/dir\",\n\"myremote:bucket\" or maybe \"myremote:\" (not recommended).",
+			Help:     "Remote to encrypt/decrypt.\nNormally should contain a ':' and a path, e.g. \"myremote:path/to/dir\",\n\"myremote:bucket\" or maybe \"myremote:\" (not recommended).",
 			Required: true,
 		}, {
 			Name:    "filename_encryption",
@@ -39,13 +39,13 @@ func init() {
 			Examples: []fs.OptionExample{
 				{
 					Value: "standard",
-					Help:  "Encrypt the filenames.\nSee the docs for the details.",
+					Help:  "Encrypt the filenames see the docs for the details.",
 				}, {
 					Value: "obfuscate",
 					Help:  "Very simple filename obfuscation.",
 				}, {
 					Value: "off",
-					Help:  "Don't encrypt the file names.\nAdds a \".bin\" extension only.",
+					Help:  "Don't encrypt the file names.  Adds a \".bin\" extension only.",
 				},
 			},
 		}, {
@@ -71,7 +71,7 @@ NB If filename_encryption is "off" then this option will do nothing.`,
 			Required:   true,
 		}, {
 			Name:       "password2",
-			Help:       "Password or pass phrase for salt.\n\nOptional but recommended.\nShould be different to the previous password.",
+			Help:       "Password or pass phrase for salt. Optional but recommended.\nShould be different to the previous password.",
 			IsPassword: true,
 		}, {
 			Name:    "server_side_across_configs",
@@ -116,29 +116,6 @@ names, or for debugging purposes.`,
 					Help:  "Encrypt file data.",
 				},
 			},
-		}, {
-			Name: "filename_encoding",
-			Help: `How to encode the encrypted filename to text string.
-
-This option could help with shortening the encrypted filename. The 
-suitable option would depend on the way your remote count the filename
-length and if it's case sensitve.`,
-			Default: "base32",
-			Examples: []fs.OptionExample{
-				{
-					Value: "base32",
-					Help:  "Encode using base32. Suitable for all remote.",
-				},
-				{
-					Value: "base64",
-					Help:  "Encode using base64. Suitable for case sensitive remote.",
-				},
-				{
-					Value: "base32768",
-					Help:  "Encode using base32768. Suitable if your remote counts UTF-16 or\nUnicode codepoint instead of UTF-8 byte length. (Eg. Onedrive)",
-				},
-			},
-			Advanced: true,
 		}},
 	})
 }
@@ -154,22 +131,18 @@ func newCipherForConfig(opt *Options) (*Cipher, error) {
 	}
 	password, err := obscure.Reveal(opt.Password)
 	if err != nil {
-		return nil, fmt.Errorf("failed to decrypt password: %w", err)
+		return nil, errors.Wrap(err, "failed to decrypt password")
 	}
 	var salt string
 	if opt.Password2 != "" {
 		salt, err = obscure.Reveal(opt.Password2)
 		if err != nil {
-			return nil, fmt.Errorf("failed to decrypt password2: %w", err)
+			return nil, errors.Wrap(err, "failed to decrypt password2")
 		}
 	}
-	enc, err := NewNameEncoding(opt.FilenameEncoding)
+	cipher, err := newCipher(mode, password, salt, opt.DirectoryNameEncryption)
 	if err != nil {
-		return nil, err
-	}
-	cipher, err := newCipher(mode, password, salt, opt.DirectoryNameEncryption, enc)
-	if err != nil {
-		return nil, fmt.Errorf("failed to make cipher: %w", err)
+		return nil, errors.Wrap(err, "failed to make cipher")
 	}
 	return cipher, nil
 }
@@ -219,7 +192,7 @@ func NewFs(ctx context.Context, name, rpath string, m configmap.Mapper) (fs.Fs,
 		}
 	}
 	if err != fs.ErrorIsFile && err != nil {
-		return nil, fmt.Errorf("failed to make remote %q to wrap: %w", remote, err)
+		return nil, errors.Wrapf(err, "failed to make remote %q to wrap", remote)
 	}
 	f := &Fs{
 		Fs:     wrappedFs,
@@ -256,7 +229,6 @@ type Options struct {
 	Password2               string `config:"password2"`
 	ServerSideAcrossConfigs bool   `config:"server_side_across_configs"`
 	ShowMapping             bool   `config:"show_mapping"`
-	FilenameEncoding        string `config:"filename_encoding"`
 }

 // Fs represents a wrapped fs.Fs
@@ -328,7 +300,7 @@ func (f *Fs) encryptEntries(ctx context.Context, entries fs.DirEntries) (newEntr
 		case fs.Directory:
 			f.addDir(ctx, &newEntries, x)
 		default:
-			return nil, fmt.Errorf("Unknown object type %T", entry)
+			return nil, errors.Errorf("Unknown object type %T", entry)
 		}
 	}
 	return newEntries, nil
@@ -391,11 +363,7 @@ type putFn func(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ..
 // put implements Put or PutStream
 func (f *Fs) put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options []fs.OpenOption, put putFn) (fs.Object, error) {
 	if f.opt.NoDataEncryption {
-		o, err := put(ctx, in, f.newObjectInfo(src, nonce{}), options...)
-		if err == nil && o != nil {
-			o = f.newObject(o)
-		}
-		return o, err
+		return put(ctx, in, f.newObjectInfo(src, nonce{}), options...)
 	}

 	// Encrypt the data into wrappedIn
@@ -434,7 +402,7 @@ func (f *Fs) put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options [
 		var dstHash string
 		dstHash, err = o.Hash(ctx, ht)
 		if err != nil {
-			return nil, fmt.Errorf("failed to read destination hash: %w", err)
+			return nil, errors.Wrap(err, "failed to read destination hash")
 		}
 		if srcHash != "" && dstHash != "" {
 			if srcHash != dstHash {
@@ -443,7 +411,7 @@ func (f *Fs) put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options [
 				if err != nil {
 					fs.Errorf(o, "Failed to remove corrupted object: %v", err)
 				}
-				return nil, fmt.Errorf("corrupted on transfer: %v crypted hash differ src %q vs dst %q", ht, srcHash, dstHash)
+				return nil, errors.Errorf("corrupted on transfer: %v crypted hash differ %q vs %q", ht, srcHash, dstHash)
 			}
 			fs.Debugf(src, "%v = %s OK", ht, srcHash)
 		}
@@ -644,24 +612,24 @@ func (f *Fs) computeHashWithNonce(ctx context.Context, nonce nonce, src fs.Objec
 	// Open the src for input
 	in, err := src.Open(ctx)
 	if err != nil {
-		return "", fmt.Errorf("failed to open src: %w", err)
+		return "", errors.Wrap(err, "failed to open src")
 	}
 	defer fs.CheckClose(in, &err)

 	// Now encrypt the src with the nonce
 	out, err := f.cipher.newEncrypter(in, &nonce)
 	if err != nil {
-		return "", fmt.Errorf("failed to make encrypter: %w", err)
+		return "", errors.Wrap(err, "failed to make encrypter")
 	}

 	// pipe into hash
 	m, err := hash.NewMultiHasherTypes(hash.NewHashSet(hashType))
 	if err != nil {
-		return "", fmt.Errorf("failed to make hasher: %w", err)
+		return "", errors.Wrap(err, "failed to make hasher")
 	}
 	_, err = io.Copy(m, out)
 	if err != nil {
-		return "", fmt.Errorf("failed to hash data: %w", err)
+		return "", errors.Wrap(err, "failed to hash data")
 	}

 	return m.Sums()[hashType], nil
@@ -680,12 +648,12 @@ func (f *Fs) ComputeHash(ctx context.Context, o *Object, src fs.Object, hashType
 	// use a limited read so we only read the header
 	in, err := o.Object.Open(ctx, &fs.RangeOption{Start: 0, End: int64(fileHeaderSize) - 1})
 	if err != nil {
-		return "", fmt.Errorf("failed to open object to read nonce: %w", err)
+		return "", errors.Wrap(err, "failed to open object to read nonce")
 	}
 	d, err := f.cipher.newDecrypter(in)
 	if err != nil {
 		_ = in.Close()
-		return "", fmt.Errorf("failed to open object to read nonce: %w", err)
+		return "", errors.Wrap(err, "failed to open object to read nonce")
 	}
 	nonce := d.nonce
 	// fs.Debugf(o, "Read nonce % 2x", nonce)
@@ -704,7 +672,7 @@ func (f *Fs) ComputeHash(ctx context.Context, o *Object, src fs.Object, hashType
 	// Close d (and hence in) once we have read the nonce
 	err = d.Close()
 	if err != nil {
-		return "", fmt.Errorf("failed to close nonce read: %w", err)
+		return "", errors.Wrap(err, "failed to close nonce read")
 	}

 	return f.computeHashWithNonce(ctx, nonce, src, hashType)
@@ -823,7 +791,7 @@ func (f *Fs) Command(ctx context.Context, name string, arg []string, opt map[str
 		for _, encryptedFileName := range arg {
 			fileName, err := f.DecryptFileName(encryptedFileName)
 			if err != nil {
-				return out, fmt.Errorf("failed to decrypt: %s: %w", encryptedFileName, err)
+				return out, errors.Wrap(err, fmt.Sprintf("Failed to decrypt : %s", encryptedFileName))
 			}
 			out = append(out, fileName)
 		}
@@ -1027,9 +995,6 @@ func (o *ObjectInfo) Size() int64 {
 	if size < 0 {
 		return size
 	}
-	if o.f.opt.NoDataEncryption {
-		return size
-	}
 	return o.f.cipher.EncryptedSize(size)
 }

--- a/backend/crypt/crypt_test.go
+++ b/backend/crypt/crypt_test.go
@@ -29,7 +29,7 @@ func TestIntegration(t *testing.T) {
 }

 // TestStandard runs integration tests against the remote
-func TestStandardBase32(t *testing.T) {
+func TestStandard(t *testing.T) {
 	if *fstest.RemoteName != "" {
 		t.Skip("Skipping as -remote set")
 	}
@@ -49,48 +49,6 @@ func TestStandardBase32(t *testing.T) {
 	})
 }

-func TestStandardBase64(t *testing.T) {
-	if *fstest.RemoteName != "" {
-		t.Skip("Skipping as -remote set")
-	}
-	tempdir := filepath.Join(os.TempDir(), "rclone-crypt-test-standard")
-	name := "TestCrypt"
-	fstests.Run(t, &fstests.Opt{
-		RemoteName: name + ":",
-		NilObject:  (*crypt.Object)(nil),
-		ExtraConfig: []fstests.ExtraConfigItem{
-			{Name: name, Key: "type", Value: "crypt"},
-			{Name: name, Key: "remote", Value: tempdir},
-			{Name: name, Key: "password", Value: obscure.MustObscure("potato")},
-			{Name: name, Key: "filename_encryption", Value: "standard"},
-			{Name: name, Key: "filename_encoding", Value: "base64"},
-		},
-		UnimplementableFsMethods:     []string{"OpenWriterAt"},
-		UnimplementableObjectMethods: []string{"MimeType"},
-	})
-}
-
-func TestStandardBase32768(t *testing.T) {
-	if *fstest.RemoteName != "" {
-		t.Skip("Skipping as -remote set")
-	}
-	tempdir := filepath.Join(os.TempDir(), "rclone-crypt-test-standard")
-	name := "TestCrypt"
-	fstests.Run(t, &fstests.Opt{
-		RemoteName: name + ":",
-		NilObject:  (*crypt.Object)(nil),
-		ExtraConfig: []fstests.ExtraConfigItem{
-			{Name: name, Key: "type", Value: "crypt"},
-			{Name: name, Key: "remote", Value: tempdir},
-			{Name: name, Key: "password", Value: obscure.MustObscure("potato")},
-			{Name: name, Key: "filename_encryption", Value: "standard"},
-			{Name: name, Key: "filename_encoding", Value: "base32768"},
-		},
-		UnimplementableFsMethods:     []string{"OpenWriterAt"},
-		UnimplementableObjectMethods: []string{"MimeType"},
-	})
-}
-
 // TestOff runs integration tests against the remote
 func TestOff(t *testing.T) {
 	if *fstest.RemoteName != "" {
--- a/backend/crypt/pkcs7/pkcs7.go
+++ b/backend/crypt/pkcs7/pkcs7.go
@@ -4,7 +4,7 @@
 // buffers which are a multiple of an underlying crypto block size.
 package pkcs7

-import "errors"
+import "github.com/pkg/errors"

 // Errors Unpad can return
 var (
--- a/backend/drive/drive.go
+++ b/backend/drive/drive.go
@@ -11,7 +11,6 @@ import (
 	"bytes"
 	"context"
 	"crypto/tls"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -26,13 +25,13 @@ import (
 	"text/template"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/cache"
 	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
 	"github.com/rclone/rclone/fs/config/configstruct"
 	"github.com/rclone/rclone/fs/config/obscure"
-	"github.com/rclone/rclone/fs/filter"
 	"github.com/rclone/rclone/fs/fserrors"
 	"github.com/rclone/rclone/fs/fshttp"
 	"github.com/rclone/rclone/fs/fspath"
@@ -68,7 +67,7 @@ const (
 	defaultScope                = "drive"
 	// chunkSize is the size of the chunks created during a resumable upload and should be a power of two.
 	// 1<<18 is the minimum size supported by the Google uploader, and there is no maximum.
-	minChunkSize     = fs.SizeSuffix(googleapi.MinUploadChunkSize)
+	minChunkSize     = 256 * fs.Kibi
 	defaultChunkSize = 8 * fs.Mebi
 	partialFields    = "id,name,size,md5Checksum,trashed,explicitlyTrashed,modifiedTime,createdTime,mimeType,parents,webViewLink,shortcutDetails,exportLinks"
 	listRGrouping    = 50   // number of IDs to search at once when using ListR
@@ -188,7 +187,7 @@ func init() {
 			opt := new(Options)
 			err := configstruct.Set(m, opt)
 			if err != nil {
-				return nil, fmt.Errorf("couldn't parse config into struct: %w", err)
+				return nil, errors.Wrap(err, "couldn't parse config into struct")
 			}

 			switch config.State {
@@ -226,7 +225,7 @@ func init() {
 			case "teamdrive_config":
 				f, err := newFs(ctx, name, "", m)
 				if err != nil {
-					return nil, fmt.Errorf("failed to make Fs to list Shared Drives: %w", err)
+					return nil, errors.Wrap(err, "failed to make Fs to list Shared Drives")
 				}
 				teamDrives, err := f.listTeamDrives(ctx)
 				if err != nil {
@@ -270,7 +269,7 @@ func init() {
 			}},
 		}, {
 			Name: "root_folder_id",
-			Help: `ID of the root folder.
+			Help: `ID of the root folder
 Leave blank normally.

 Fill in to access "Computers" folders (see docs), or for rclone to use
@@ -278,15 +277,15 @@ a non root folder as its starting point.
 `,
 		}, {
 			Name: "service_account_file",
-			Help: "Service Account Credentials JSON file path.\n\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login." + env.ShellExpandHelp,
+			Help: "Service Account Credentials JSON file path \nLeave blank normally.\nNeeded only if you want use SA instead of interactive login." + env.ShellExpandHelp,
 		}, {
 			Name:     "service_account_credentials",
-			Help:     "Service Account Credentials JSON blob.\n\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
+			Help:     "Service Account Credentials JSON blob\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
 			Hide:     fs.OptionHideConfigurator,
 			Advanced: true,
 		}, {
 			Name:     "team_drive",
-			Help:     "ID of the Shared Drive (Team Drive).",
+			Help:     "ID of the Shared Drive (Team Drive)",
 			Hide:     fs.OptionHideConfigurator,
 			Advanced: true,
 		}, {
@@ -297,12 +296,12 @@ a non root folder as its starting point.
 		}, {
 			Name:     "use_trash",
 			Default:  true,
-			Help:     "Send files to the trash instead of deleting permanently.\n\nDefaults to true, namely sending files to the trash.\nUse `--drive-use-trash=false` to delete files permanently instead.",
+			Help:     "Send files to the trash instead of deleting permanently.\nDefaults to true, namely sending files to the trash.\nUse `--drive-use-trash=false` to delete files permanently instead.",
 			Advanced: true,
 		}, {
 			Name:     "skip_gdocs",
 			Default:  false,
-			Help:     "Skip google documents in all listings.\n\nIf given, gdocs practically become invisible to rclone.",
+			Help:     "Skip google documents in all listings.\nIf given, gdocs practically become invisible to rclone.",
 			Advanced: true,
 		}, {
 			Name:    "skip_checksum_gphotos",
@@ -335,7 +334,7 @@ commands (copy, sync, etc.), and with all other commands too.`,
 		}, {
 			Name:     "trashed_only",
 			Default:  false,
-			Help:     "Only show files that are in the trash.\n\nThis will show trashed files in their original directory structure.",
+			Help:     "Only show files that are in the trash.\nThis will show trashed files in their original directory structure.",
 			Advanced: true,
 		}, {
 			Name:     "starred_only",
@@ -345,7 +344,7 @@ commands (copy, sync, etc.), and with all other commands too.`,
 		}, {
 			Name:     "formats",
 			Default:  "",
-			Help:     "Deprecated: See export_formats.",
+			Help:     "Deprecated: see export_formats",
 			Advanced: true,
 			Hide:     fs.OptionHideConfigurator,
 		}, {
@@ -361,12 +360,12 @@ commands (copy, sync, etc.), and with all other commands too.`,
 		}, {
 			Name:     "allow_import_name_change",
 			Default:  false,
-			Help:     "Allow the filetype to change when uploading Google docs.\n\nE.g. file.doc to file.docx. This will confuse sync and reupload every time.",
+			Help:     "Allow the filetype to change when uploading Google docs (e.g. file.doc to file.docx). This will confuse sync and reupload every time.",
 			Advanced: true,
 		}, {
 			Name:    "use_created_date",
 			Default: false,
-			Help: `Use file created date instead of modified date.
+			Help: `Use file created date instead of modified date.,

 Useful when downloading data and you want the creation date used in
 place of the last modified date.
@@ -400,7 +399,7 @@ date is used.`,
 		}, {
 			Name:     "list_chunk",
 			Default:  1000,
-			Help:     "Size of listing chunk 100-1000, 0 to disable.",
+			Help:     "Size of listing chunk 100-1000. 0 to disable.",
 			Advanced: true,
 		}, {
 			Name:     "impersonate",
@@ -410,19 +409,17 @@ date is used.`,
 		}, {
 			Name:    "alternate_export",
 			Default: false,
-			Help:    "Deprecated: No longer needed.",
+			Help:    "Deprecated: no longer needed",
 			Hide:    fs.OptionHideBoth,
 		}, {
 			Name:     "upload_cutoff",
 			Default:  defaultChunkSize,
-			Help:     "Cutoff for switching to chunked upload.",
+			Help:     "Cutoff for switching to chunked upload",
 			Advanced: true,
 		}, {
 			Name:    "chunk_size",
 			Default: defaultChunkSize,
-			Help: `Upload chunk size.
-
-Must a power of 2 >= 256k.
+			Help: `Upload chunk size. Must a power of 2 >= 256k.

 Making this larger will improve performance, but note that each chunk
 is buffered in memory one per transfer.
@@ -492,7 +489,7 @@ configurations.`,
 		}, {
 			Name:    "disable_http2",
 			Default: true,
-			Help: `Disable drive using http2.
+			Help: `Disable drive using http2

 There is currently an unsolved issue with the google drive backend and
 HTTP/2.  HTTP/2 is therefore disabled by default for the drive backend
@@ -506,7 +503,7 @@ See: https://github.com/rclone/rclone/issues/3631
 		}, {
 			Name:    "stop_on_upload_limit",
 			Default: false,
-			Help: `Make upload limit errors be fatal.
+			Help: `Make upload limit errors be fatal

 At the time of writing it is only possible to upload 750 GiB of data to
 Google Drive a day (this is an undocumented limit). When this limit is
@@ -523,7 +520,7 @@ See: https://github.com/rclone/rclone/issues/3857
 		}, {
 			Name:    "stop_on_download_limit",
 			Default: false,
-			Help: `Make download limit errors be fatal.
+			Help: `Make download limit errors be fatal

 At the time of writing it is only possible to download 10 TiB of data from
 Google Drive a day (this is an undocumented limit). When this limit is
@@ -537,7 +534,7 @@ Google don't document so it may break in the future.
 			Advanced: true,
 		}, {
 			Name: "skip_shortcuts",
-			Help: `If set skip shortcut files.
+			Help: `If set skip shortcut files

 Normally rclone dereferences shortcut files making them appear as if
 they are the original file (see [the shortcuts section](#shortcuts)).
@@ -619,7 +616,6 @@ type Fs struct {
 	client           *http.Client       // authorized client
 	rootFolderID     string             // the id of the root folder
 	dirCache         *dircache.DirCache // Map of directory path to directory id
-	lastQuery        string             // Last query string to check in unit tests
 	pacer            *fs.Pacer          // To pace the API calls
 	exportExtensions []string           // preferred extensions to download docs
 	importMimeTypes  []string           // MIME types to convert to docs
@@ -755,7 +751,7 @@ func (f *Fs) getFile(ctx context.Context, ID string, fields googleapi.Field) (in
 func (f *Fs) getRootID(ctx context.Context) (string, error) {
 	info, err := f.getFile(ctx, "root", "id")
 	if err != nil {
-		return "", fmt.Errorf("couldn't find root directory ID: %w", err)
+		return "", errors.Wrap(err, "couldn't find root directory ID")
 	}
 	return info.Id, nil
 }
@@ -833,31 +829,11 @@ func (f *Fs) list(ctx context.Context, dirIDs []string, title string, directorie
 	if filesOnly {
 		query = append(query, fmt.Sprintf("mimeType!='%s'", driveFolderType))
 	}
-
-	// Constrain query using filter if this remote is a sync/copy/walk source.
-	if fi, use := filter.GetConfig(ctx), filter.GetUseFilter(ctx); fi != nil && use {
-		queryByTime := func(op string, tm time.Time) {
-			if tm.IsZero() {
-				return
-			}
-			// https://developers.google.com/drive/api/v3/ref-search-terms#operators
-			// Query times use RFC 3339 format, default timezone is UTC
-			timeStr := tm.UTC().Format("2006-01-02T15:04:05")
-			term := fmt.Sprintf("(modifiedTime %s '%s' or mimeType = '%s')", op, timeStr, driveFolderType)
-			query = append(query, term)
-		}
-		queryByTime(">=", fi.ModTimeFrom)
-		queryByTime("<=", fi.ModTimeTo)
-	}
-
 	list := f.svc.Files.List()
-	queryString := strings.Join(query, " and ")
-	if queryString != "" {
-		list.Q(queryString)
-		// fs.Debugf(f, "list query: %q", queryString)
+	if len(query) > 0 {
+		list.Q(strings.Join(query, " and "))
+		// fmt.Printf("list Query = %q\n", query)
 	}
-	f.lastQuery = queryString // for unit tests
-
 	if f.opt.ListChunk > 0 {
 		list.PageSize(f.opt.ListChunk)
 	}
@@ -882,7 +858,7 @@ OUTER:
 			return f.shouldRetry(ctx, err)
 		})
 		if err != nil {
-			return false, fmt.Errorf("couldn't list directory: %w", err)
+			return false, errors.Wrap(err, "couldn't list directory")
 		}
 		if files.IncompleteSearch {
 			fs.Errorf(f, "search result INCOMPLETE")
@@ -904,7 +880,7 @@ OUTER:
 				}
 				item, err = f.resolveShortcut(ctx, item)
 				if err != nil {
-					return false, fmt.Errorf("list: %w", err)
+					return false, errors.Wrap(err, "list")
 				}
 			}
 			// Check the case of items is correct since
@@ -965,7 +941,7 @@ func fixMimeType(mimeTypeIn string) string {
 		mimeTypeOut = mime.FormatMediaType(mediaType, param)
 	}
 	if mimeTypeOut == "" {
-		panic(fmt.Errorf("unable to fix MIME type %q", mimeTypeIn))
+		panic(errors.Errorf("unable to fix MIME type %q", mimeTypeIn))
 	}
 	return mimeTypeOut
 }
@@ -1000,7 +976,7 @@ func parseExtensions(extensionsIn ...string) (extensions, mimeTypes []string, er
 			}
 			mt := mime.TypeByExtension(extension)
 			if mt == "" {
-				return extensions, mimeTypes, fmt.Errorf("couldn't find MIME type for extension %q", extension)
+				return extensions, mimeTypes, errors.Errorf("couldn't find MIME type for extension %q", extension)
 			}
 			if !containsString(extensions, extension) {
 				extensions = append(extensions, extension)
@@ -1027,7 +1003,7 @@ func getServiceAccountClient(ctx context.Context, opt *Options, credentialsData
 	scopes := driveScopes(opt.Scope)
 	conf, err := google.JWTConfigFromJSON(credentialsData, scopes...)
 	if err != nil {
-		return nil, fmt.Errorf("error processing credentials: %w", err)
+		return nil, errors.Wrap(err, "error processing credentials")
 	}
 	if opt.Impersonate != "" {
 		conf.Subject = opt.Impersonate
@@ -1044,19 +1020,19 @@ func createOAuthClient(ctx context.Context, opt *Options, name string, m configm
 	if len(opt.ServiceAccountCredentials) == 0 && opt.ServiceAccountFile != "" {
 		loadedCreds, err := ioutil.ReadFile(env.ShellExpand(opt.ServiceAccountFile))
 		if err != nil {
-			return nil, fmt.Errorf("error opening service account credentials file: %w", err)
+			return nil, errors.Wrap(err, "error opening service account credentials file")
 		}
 		opt.ServiceAccountCredentials = string(loadedCreds)
 	}
 	if opt.ServiceAccountCredentials != "" {
 		oAuthClient, err = getServiceAccountClient(ctx, opt, []byte(opt.ServiceAccountCredentials))
 		if err != nil {
-			return nil, fmt.Errorf("failed to create oauth client from service account: %w", err)
+			return nil, errors.Wrap(err, "failed to create oauth client from service account")
 		}
 	} else {
 		oAuthClient, _, err = oauthutil.NewClientWithBaseClient(ctx, name, m, driveConfig, getClient(ctx, opt))
 		if err != nil {
-			return nil, fmt.Errorf("failed to create oauth client: %w", err)
+			return nil, errors.Wrap(err, "failed to create oauth client")
 		}
 	}

@@ -1065,10 +1041,10 @@ func createOAuthClient(ctx context.Context, opt *Options, name string, m configm

 func checkUploadChunkSize(cs fs.SizeSuffix) error {
 	if !isPowerOfTwo(int64(cs)) {
-		return fmt.Errorf("%v isn't a power of two", cs)
+		return errors.Errorf("%v isn't a power of two", cs)
 	}
 	if cs < minChunkSize {
-		return fmt.Errorf("%s is less than %s", cs, minChunkSize)
+		return errors.Errorf("%s is less than %s", cs, minChunkSize)
 	}
 	return nil
 }
@@ -1106,16 +1082,16 @@ func newFs(ctx context.Context, name, path string, m configmap.Mapper) (*Fs, err
 	}
 	err = checkUploadCutoff(opt.UploadCutoff)
 	if err != nil {
-		return nil, fmt.Errorf("drive: upload cutoff: %w", err)
+		return nil, errors.Wrap(err, "drive: upload cutoff")
 	}
 	err = checkUploadChunkSize(opt.ChunkSize)
 	if err != nil {
-		return nil, fmt.Errorf("drive: chunk size: %w", err)
+		return nil, errors.Wrap(err, "drive: chunk size")
 	}

 	oAuthClient, err := createOAuthClient(ctx, opt, name, m)
 	if err != nil {
-		return nil, fmt.Errorf("drive: failed when making oauth client: %w", err)
+		return nil, errors.Wrap(err, "drive: failed when making oauth client")
 	}

 	root, err := parseDrivePath(path)
@@ -1149,13 +1125,13 @@ func newFs(ctx context.Context, name, path string, m configmap.Mapper) (*Fs, err
 	f.client = oAuthClient
 	f.svc, err = drive.New(f.client)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't create Drive client: %w", err)
+		return nil, errors.Wrap(err, "couldn't create Drive client")
 	}

 	if f.opt.V2DownloadMinSize >= 0 {
 		f.v2Svc, err = drive_v2.New(f.client)
 		if err != nil {
-			return nil, fmt.Errorf("couldn't create Drive v2 client: %w", err)
+			return nil, errors.Wrap(err, "couldn't create Drive v2 client")
 		}
 	}

@@ -1180,8 +1156,7 @@ func NewFs(ctx context.Context, name, path string, m configmap.Mapper) (fs.Fs, e
 		// otherwise look up the actual root ID
 		rootID, err := f.getRootID(ctx)
 		if err != nil {
-			var gerr *googleapi.Error
-			if errors.As(err, &gerr) && gerr.Code == 404 {
+			if gerr, ok := errors.Cause(err).(*googleapi.Error); ok && gerr.Code == 404 {
 				// 404 means that this scope does not have permission to get the
 				// root so just use "root"
 				rootID = "root"
@@ -1323,7 +1298,7 @@ func (f *Fs) newDocumentObject(remote string, info *drive.File, extension, expor
 func (f *Fs) newLinkObject(remote string, info *drive.File, extension, exportMimeType string) (fs.Object, error) {
 	t := linkTemplate(exportMimeType)
 	if t == nil {
-		return nil, fmt.Errorf("unsupported link type %s", exportMimeType)
+		return nil, errors.Errorf("unsupported link type %s", exportMimeType)
 	}
 	xdgIcon := _mimeTypeToXDGLinkIcons[info.MimeType]
 	if xdgIcon == "" {
@@ -1336,7 +1311,7 @@ func (f *Fs) newLinkObject(remote string, info *drive.File, extension, exportMim
 		info.WebViewLink, info.Name, xdgIcon,
 	})
 	if err != nil {
-		return nil, fmt.Errorf("executing template failed: %w", err)
+		return nil, errors.Wrap(err, "executing template failed")
 	}

 	baseObject := f.newBaseObject(remote+extension, info)
@@ -1373,11 +1348,11 @@ func (f *Fs) newObjectWithExportInfo(
 	// will have been resolved so this will do nothing.
 	info, err = f.resolveShortcut(ctx, info)
 	if err != nil {
-		return nil, fmt.Errorf("new object: %w", err)
+		return nil, errors.Wrap(err, "new object")
 	}
 	switch {
 	case info.MimeType == driveFolderType:
-		return nil, fs.ErrorIsDir
+		return nil, fs.ErrorNotAFile
 	case info.MimeType == shortcutMimeType:
 		// We can only get here if f.opt.SkipShortcuts is set
 		// and not from a listing. This is unlikely.
@@ -2016,14 +1991,13 @@ func (f *Fs) resolveShortcut(ctx context.Context, item *drive.File) (newItem *dr
 	}
 	newItem, err = f.getFile(ctx, item.ShortcutDetails.TargetId, f.fileFields)
 	if err != nil {
-		var gerr *googleapi.Error
-		if errors.As(err, &gerr) && gerr.Code == 404 {
+		if gerr, ok := errors.Cause(err).(*googleapi.Error); ok && gerr.Code == 404 {
 			// 404 means dangling shortcut, so just return the shortcut with the mime type mangled
 			fs.Logf(nil, "Dangling shortcut %q detected", item.Name)
 			item.MimeType = shortcutMimeTypeDangling
 			return item, nil
 		}
-		return nil, fmt.Errorf("failed to resolve shortcut: %w", err)
+		return nil, errors.Wrap(err, "failed to resolve shortcut")
 	}
 	// make sure we use the Name, Parents and Trashed from the original item
 	newItem.Name = item.Name
@@ -2125,10 +2099,10 @@ func (f *Fs) PutUnchecked(ctx context.Context, in io.Reader, src fs.ObjectInfo,

 			exportExt, _, _ = f.findExportFormatByMimeType(ctx, importMimeType)
 			if exportExt == "" {
-				return nil, fmt.Errorf("No export format found for %q", importMimeType)
+				return nil, errors.Errorf("No export format found for %q", importMimeType)
 			}
 			if exportExt != srcExt && !f.opt.AllowImportNameChange {
-				return nil, fmt.Errorf("Can't convert %q to a document with a different export filetype (%q)", srcExt, exportExt)
+				return nil, errors.Errorf("Can't convert %q to a document with a different export filetype (%q)", srcExt, exportExt)
 			}
 		}
 	}
@@ -2149,7 +2123,7 @@ func (f *Fs) PutUnchecked(ctx context.Context, in io.Reader, src fs.ObjectInfo,
 		// Don't retry, return a retry error instead
 		err = f.pacer.CallNoRetry(func() (bool, error) {
 			info, err = f.svc.Files.Create(createInfo).
-				Media(in, googleapi.ContentType(srcMimeType), googleapi.ChunkSize(0)).
+				Media(in, googleapi.ContentType(srcMimeType)).
 				Fields(partialFields).
 				SupportsAllDrives(true).
 				KeepRevisionForever(f.opt.KeepRevisionForever).
@@ -2196,7 +2170,7 @@ func (f *Fs) MergeDirs(ctx context.Context, dirs []fs.Directory) error {
 			return false
 		})
 		if err != nil {
-			return fmt.Errorf("MergeDirs list failed on %v: %w", srcDir, err)
+			return errors.Wrapf(err, "MergeDirs list failed on %v", srcDir)
 		}
 		// move them into place
 		for _, info := range infos {
@@ -2212,14 +2186,14 @@ func (f *Fs) MergeDirs(ctx context.Context, dirs []fs.Directory) error {
 				return f.shouldRetry(ctx, err)
 			})
 			if err != nil {
-				return fmt.Errorf("MergeDirs move failed on %q in %v: %w", info.Name, srcDir, err)
+				return errors.Wrapf(err, "MergeDirs move failed on %q in %v", info.Name, srcDir)
 			}
 		}
 		// rmdir (into trash) the now empty source directory
 		fs.Infof(srcDir, "removing empty directory")
 		err = f.delete(ctx, srcDir.ID(), true)
 		if err != nil {
-			return fmt.Errorf("MergeDirs move failed to rmdir %q: %w", srcDir, err)
+			return errors.Wrapf(err, "MergeDirs move failed to rmdir %q", srcDir)
 		}
 	}
 	return nil
@@ -2282,7 +2256,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
 			return err
 		}
 		if found {
-			return fmt.Errorf("directory not empty")
+			return errors.Errorf("directory not empty")
 		}
 	}
 	if root != "" {
@@ -2460,7 +2434,7 @@ func (f *Fs) cleanupTeamDrive(ctx context.Context, dir string, directoryID strin
 		return false
 	})
 	if err != nil {
-		err = fmt.Errorf("failed to list directory: %w", err)
+		err = errors.Wrap(err, "failed to list directory")
 		r.Errors++
 		fs.Errorf(dir, "%v", err)
 	}
@@ -2504,7 +2478,7 @@ func (f *Fs) teamDriveOK(ctx context.Context) (err error) {
 		return f.shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return fmt.Errorf("failed to get Shared Drive info: %w", err)
+		return errors.Wrap(err, "failed to get Shared Drive info")
 	}
 	fs.Debugf(f, "read info from Shared Drive %q", td.Name)
 	return err
@@ -2527,7 +2501,7 @@ func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
 		return f.shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("failed to get Drive storageQuota: %w", err)
+		return nil, errors.Wrap(err, "failed to get Drive storageQuota")
 	}
 	q := about.StorageQuota
 	usage := &fs.Usage{
@@ -2851,7 +2825,7 @@ func (f *Fs) Hashes() hash.Set {
 func (f *Fs) changeChunkSize(chunkSizeString string) (err error) {
 	chunkSizeInt, err := strconv.ParseInt(chunkSizeString, 10, 64)
 	if err != nil {
-		return fmt.Errorf("couldn't convert chunk size to int: %w", err)
+		return errors.Wrap(err, "couldn't convert chunk size to int")
 	}
 	chunkSize := fs.SizeSuffix(chunkSizeInt)
 	if chunkSize == f.opt.ChunkSize {
@@ -2888,17 +2862,17 @@ func (f *Fs) changeServiceAccountFile(ctx context.Context, file string) (err err
 	f.opt.ServiceAccountCredentials = ""
 	oAuthClient, err := createOAuthClient(ctx, &f.opt, f.name, f.m)
 	if err != nil {
-		return fmt.Errorf("drive: failed when making oauth client: %w", err)
+		return errors.Wrap(err, "drive: failed when making oauth client")
 	}
 	f.client = oAuthClient
 	f.svc, err = drive.New(f.client)
 	if err != nil {
-		return fmt.Errorf("couldn't create Drive client: %w", err)
+		return errors.Wrap(err, "couldn't create Drive client")
 	}
 	if f.opt.V2DownloadMinSize >= 0 {
 		f.v2Svc, err = drive_v2.New(f.client)
 		if err != nil {
-			return fmt.Errorf("couldn't create Drive v2 client: %w", err)
+			return errors.Wrap(err, "couldn't create Drive v2 client")
 		}
 	}
 	return nil
@@ -2926,13 +2900,13 @@ func (f *Fs) makeShortcut(ctx context.Context, srcPath string, dstFs *Fs, dstPat
 		}
 		isDir = true
 	} else if srcObj, err := srcFs.NewObject(ctx, srcPath); err != nil {
-		if err != fs.ErrorIsDir {
-			return nil, fmt.Errorf("can't find source: %w", err)
+		if err != fs.ErrorNotAFile {
+			return nil, errors.Wrap(err, "can't find source")
 		}
 		// source was a directory
 		srcID, err = srcFs.dirCache.FindDir(ctx, srcPath, false)
 		if err != nil {
-			return nil, fmt.Errorf("failed to find source dir: %w", err)
+			return nil, errors.Wrap(err, "failed to find source dir")
 		}
 		isDir = true
 	} else {
@@ -2946,16 +2920,16 @@ func (f *Fs) makeShortcut(ctx context.Context, srcPath string, dstFs *Fs, dstPat
 	if err != fs.ErrorObjectNotFound {
 		if err == nil {
 			err = errors.New("existing file")
-		} else if err == fs.ErrorIsDir {
+		} else if err == fs.ErrorNotAFile {
 			err = errors.New("existing directory")
 		}
-		return nil, fmt.Errorf("not overwriting shortcut target: %w", err)
+		return nil, errors.Wrap(err, "not overwriting shortcut target")
 	}

 	// Create destination shortcut
 	createInfo, err := dstFs.createFileInfo(ctx, dstPath, time.Now())
 	if err != nil {
-		return nil, fmt.Errorf("shortcut destination failed: %w", err)
+		return nil, errors.Wrap(err, "shortcut destination failed")
 	}
 	createInfo.MimeType = shortcutMimeType
 	createInfo.ShortcutDetails = &drive.FileShortcutDetails{
@@ -2972,7 +2946,7 @@ func (f *Fs) makeShortcut(ctx context.Context, srcPath string, dstFs *Fs, dstPat
 		return dstFs.shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("shortcut creation failed: %w", err)
+		return nil, errors.Wrap(err, "shortcut creation failed")
 	}
 	if isDir {
 		return nil, nil
@@ -2992,7 +2966,7 @@ func (f *Fs) listTeamDrives(ctx context.Context) (drives []*drive.Drive, err err
 			return defaultFs.shouldRetry(ctx, err)
 		})
 		if err != nil {
-			return drives, fmt.Errorf("listing Team Drives failed: %w", err)
+			return drives, errors.Wrap(err, "listing Team Drives failed")
 		}
 		drives = append(drives, teamDrives.Drives...)
 		if teamDrives.NextPageToken == "" {
@@ -3035,7 +3009,7 @@ func (f *Fs) unTrash(ctx context.Context, dir string, directoryID string, recurs
 				return f.shouldRetry(ctx, err)
 			})
 			if err != nil {
-				err = fmt.Errorf("failed to restore: %w", err)
+				err = errors.Wrap(err, "failed to restore")
 				r.Errors++
 				fs.Errorf(remote, "%v", err)
 			} else {
@@ -3052,7 +3026,7 @@ func (f *Fs) unTrash(ctx context.Context, dir string, directoryID string, recurs
 		return false
 	})
 	if err != nil {
-		err = fmt.Errorf("failed to list directory: %w", err)
+		err = errors.Wrap(err, "failed to list directory")
 		r.Errors++
 		fs.Errorf(dir, "%v", err)
 	}
@@ -3076,10 +3050,10 @@ func (f *Fs) unTrashDir(ctx context.Context, dir string, recurse bool) (r unTras
 func (f *Fs) copyID(ctx context.Context, id, dest string) (err error) {
 	info, err := f.getFile(ctx, id, f.fileFields)
 	if err != nil {
-		return fmt.Errorf("couldn't find id: %w", err)
+		return errors.Wrap(err, "couldn't find id")
 	}
 	if info.MimeType == driveFolderType {
-		return fmt.Errorf("can't copy directory use: rclone copy --drive-root-folder-id %s %s %s", id, fs.ConfigString(f), dest)
+		return errors.Errorf("can't copy directory use: rclone copy --drive-root-folder-id %s %s %s", id, fs.ConfigString(f), dest)
 	}
 	info.Name = f.opt.Enc.ToStandardName(info.Name)
 	o, err := f.newObjectWithInfo(ctx, info.Name, info)
@@ -3102,7 +3076,7 @@ func (f *Fs) copyID(ctx context.Context, id, dest string) (err error) {
 	}
 	_, err = operations.Copy(ctx, dstFs, nil, destLeaf, o)
 	if err != nil {
-		return fmt.Errorf("copy failed: %w", err)
+		return errors.Wrap(err, "copy failed")
 	}
 	return nil
 }
@@ -3166,7 +3140,7 @@ account.

 Usage:

-    rclone backend [-o config] drives drive:
+    rclone backend drives drive:

 This will return a JSON list of objects like this

@@ -3183,22 +3157,6 @@ This will return a JSON list of objects like this
        }
    ]

-With the -o config parameter it will output the list in a format
-suitable for adding to a config file to make aliases for all the
-drives found.
-
-    [My Drive]
-    type = alias
-    remote = drive,team_drive=0ABCDEF-01234567890,root_folder_id=:
-
-    [Test Drive]
-    type = alias
-    remote = drive,team_drive=0ABCDEFabcdefghijkl,root_folder_id=:
-
-Adding this to the rclone config file will cause those team drives to
-be accessible with the aliases shown. This may require manual editing
-of the names.
-
 `,
 }, {
 	Name:  "untrash",
@@ -3301,7 +3259,7 @@ func (f *Fs) Command(ctx context.Context, name string, arg []string, opt map[str
 		if ok {
 			targetFs, err := cache.Get(ctx, target)
 			if err != nil {
-				return nil, fmt.Errorf("couldn't find target: %w", err)
+				return nil, errors.Wrap(err, "couldn't find target")
 			}
 			dstFs, ok = targetFs.(*Fs)
 			if !ok {
@@ -3310,21 +3268,7 @@ func (f *Fs) Command(ctx context.Context, name string, arg []string, opt map[str
 		}
 		return f.makeShortcut(ctx, arg[0], dstFs, arg[1])
 	case "drives":
-		drives, err := f.listTeamDrives(ctx)
-		if err != nil {
-			return nil, err
-		}
-		if _, ok := opt["config"]; ok {
-			lines := []string{}
-			for _, drive := range drives {
-				lines = append(lines, "")
-				lines = append(lines, fmt.Sprintf("[%s]", drive.Name))
-				lines = append(lines, fmt.Sprintf("type = alias"))
-				lines = append(lines, fmt.Sprintf("remote = %s,team_drive=%s,root_folder_id=:", f.name, drive.Id))
-			}
-			return lines, nil
-		}
-		return drives, nil
+		return f.listTeamDrives(ctx)
 	case "untrash":
 		dir := ""
 		if len(arg) > 0 {
@@ -3340,7 +3284,7 @@ func (f *Fs) Command(ctx context.Context, name string, arg []string, opt map[str
 			arg = arg[2:]
 			err = f.copyID(ctx, id, dest)
 			if err != nil {
-				return nil, fmt.Errorf("failed copying %q to %q: %w", id, dest, err)
+				return nil, errors.Wrapf(err, "failed copying %q to %q", id, dest)
 			}
 		}
 		return nil, nil
@@ -3574,11 +3518,11 @@ func (o *baseObject) open(ctx context.Context, url string, options ...fs.OpenOpt
 				url += "acknowledgeAbuse=true"
 				_, res, err = o.httpResponse(ctx, url, "GET", options)
 			} else {
-				err = fmt.Errorf("Use the --drive-acknowledge-abuse flag to download this file: %w", err)
+				err = errors.Wrap(err, "Use the --drive-acknowledge-abuse flag to download this file")
 			}
 		}
 		if err != nil {
-			return nil, fmt.Errorf("open file failed: %w", err)
+			return nil, errors.Wrap(err, "open file failed")
 		}
 	}
 	return res.Body, nil
@@ -3672,7 +3616,7 @@ func (o *baseObject) update(ctx context.Context, updateInfo *drive.File, uploadM
 		// Don't retry, return a retry error instead
 		err = o.fs.pacer.CallNoRetry(func() (bool, error) {
 			info, err = o.fs.svc.Files.Update(actualID(o.id), updateInfo).
-				Media(in, googleapi.ContentType(uploadMimeType), googleapi.ChunkSize(0)).
+				Media(in, googleapi.ContentType(uploadMimeType)).
 				Fields(partialFields).
 				SupportsAllDrives(true).
 				KeepRevisionForever(o.fs.opt.KeepRevisionForever).
@@ -3742,14 +3686,14 @@ func (o *documentObject) Update(ctx context.Context, in io.Reader, src fs.Object
 	}

 	if o.fs.importMimeTypes == nil || o.fs.opt.SkipGdocs {
-		return fmt.Errorf("can't update google document type without --drive-import-formats")
+		return errors.Errorf("can't update google document type without --drive-import-formats")
 	}
 	importMimeType = o.fs.findImportFormat(ctx, updateInfo.MimeType)
 	if importMimeType == "" {
-		return fmt.Errorf("no import format found for %q", srcMimeType)
+		return errors.Errorf("no import format found for %q", srcMimeType)
 	}
 	if importMimeType != o.documentMimeType {
-		return fmt.Errorf("can't change google document type (o: %q, src: %q, import: %q)", o.documentMimeType, srcMimeType, importMimeType)
+		return errors.Errorf("can't change google document type (o: %q, src: %q, import: %q)", o.documentMimeType, srcMimeType, importMimeType)
 	}
 	updateInfo.MimeType = importMimeType

--- a/backend/drive/drive_internal_test.go
+++ b/backend/drive/drive_internal_test.go
@@ -4,8 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"errors"
-	"fmt"
 	"io"
 	"io/ioutil"
 	"mime"
@@ -16,12 +14,11 @@ import (
 	"testing"
 	"time"

+	"github.com/pkg/errors"
 	_ "github.com/rclone/rclone/backend/local"
 	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/filter"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/fs/operations"
-	"github.com/rclone/rclone/fs/sync"
 	"github.com/rclone/rclone/fstest"
 	"github.com/rclone/rclone/fstest/fstests"
 	"github.com/rclone/rclone/lib/random"
@@ -464,81 +461,6 @@ func (f *Fs) InternalTestCopyID(t *testing.T) {
 	})
 }

-// TestIntegration/FsMkdir/FsPutFiles/Internal/AgeQuery
-func (f *Fs) InternalTestAgeQuery(t *testing.T) {
-	opt := &filter.Opt{}
-	err := opt.MaxAge.Set("1h")
-	assert.NoError(t, err)
-	flt, err := filter.NewFilter(opt)
-	assert.NoError(t, err)
-
-	defCtx := context.Background()
-	fltCtx := filter.ReplaceConfig(defCtx, flt)
-
-	testCtx1 := fltCtx
-	testCtx2 := filter.SetUseFilter(testCtx1, true)
-	testCtx3, testCancel := context.WithCancel(testCtx2)
-	testCtx4 := filter.SetUseFilter(testCtx3, false)
-	testCancel()
-	assert.False(t, filter.GetUseFilter(testCtx1))
-	assert.True(t, filter.GetUseFilter(testCtx2))
-	assert.True(t, filter.GetUseFilter(testCtx3))
-	assert.False(t, filter.GetUseFilter(testCtx4))
-
-	subRemote := fmt.Sprintf("%s:%s/%s", f.Name(), f.Root(), "agequery-testdir")
-	subFsResult, err := fs.NewFs(defCtx, subRemote)
-	require.NoError(t, err)
-	subFs, isDriveFs := subFsResult.(*Fs)
-	require.True(t, isDriveFs)
-
-	tempDir1, err := ioutil.TempDir("", "rclone-drive-agequery1-test")
-	require.NoError(t, err)
-	defer func() {
-		_ = os.RemoveAll(tempDir1)
-	}()
-	tempFs1, err := fs.NewFs(defCtx, tempDir1)
-	require.NoError(t, err)
-
-	tempDir2, err := ioutil.TempDir("", "rclone-drive-agequery2-test")
-	require.NoError(t, err)
-	defer func() {
-		_ = os.RemoveAll(tempDir2)
-	}()
-	tempFs2, err := fs.NewFs(defCtx, tempDir2)
-	require.NoError(t, err)
-
-	file1 := fstest.Item{ModTime: time.Now(), Path: "agequery.txt"}
-	_, _ = fstests.PutTestContents(defCtx, t, tempFs1, &file1, "abcxyz", true)
-
-	// validate sync/copy
-	const timeQuery = "(modifiedTime >= '"
-
-	assert.NoError(t, sync.CopyDir(defCtx, subFs, tempFs1, false))
-	assert.NotContains(t, subFs.lastQuery, timeQuery)
-
-	assert.NoError(t, sync.CopyDir(fltCtx, subFs, tempFs1, false))
-	assert.Contains(t, subFs.lastQuery, timeQuery)
-
-	assert.NoError(t, sync.CopyDir(fltCtx, tempFs2, subFs, false))
-	assert.Contains(t, subFs.lastQuery, timeQuery)
-
-	assert.NoError(t, sync.CopyDir(defCtx, tempFs2, subFs, false))
-	assert.NotContains(t, subFs.lastQuery, timeQuery)
-
-	// validate list/walk
-	devNull, errOpen := os.OpenFile(os.DevNull, os.O_WRONLY, 0)
-	require.NoError(t, errOpen)
-	defer func() {
-		_ = devNull.Close()
-	}()
-
-	assert.NoError(t, operations.List(defCtx, subFs, devNull))
-	assert.NotContains(t, subFs.lastQuery, timeQuery)
-
-	assert.NoError(t, operations.List(fltCtx, subFs, devNull))
-	assert.Contains(t, subFs.lastQuery, timeQuery)
-}
-
 func (f *Fs) InternalTest(t *testing.T) {
 	// These tests all depend on each other so run them as nested tests
 	t.Run("DocumentImport", func(t *testing.T) {
@@ -556,7 +478,6 @@ func (f *Fs) InternalTest(t *testing.T) {
 	t.Run("Shortcuts", f.InternalTestShortcuts)
 	t.Run("UnTrash", f.InternalTestUnTrash)
 	t.Run("CopyID", f.InternalTestCopyID)
-	t.Run("AgeQuery", f.InternalTestAgeQuery)
 }

 var _ fstests.InternalTester = (*Fs)(nil)
--- a/backend/dropbox/batcher.go
+++ b/backend/dropbox/batcher.go
@@ -8,13 +8,13 @@ package dropbox

 import (
 	"context"
-	"errors"
 	"fmt"
 	"sync"
 	"time"

-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/async"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/files"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/async"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/files"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/fserrors"
 	"github.com/rclone/rclone/lib/atexit"
@@ -66,7 +66,7 @@ type batcherResponse struct {
 func newBatcher(ctx context.Context, f *Fs, mode string, size int, timeout time.Duration) (*batcher, error) {
 	// fs.Debugf(f, "Creating batcher with mode %q, size %d, timeout %v", mode, size, timeout)
 	if size > maxBatchSize || size < 0 {
-		return nil, fmt.Errorf("dropbox: batch size must be < %d and >= 0 - it is currently %d", maxBatchSize, size)
+		return nil, errors.Errorf("dropbox: batch size must be < %d and >= 0 - it is currently %d", maxBatchSize, size)
 	}

 	async := false
@@ -91,7 +91,7 @@ func newBatcher(ctx context.Context, f *Fs, mode string, size int, timeout time.
 	case "off":
 		size = 0
 	default:
-		return nil, fmt.Errorf("dropbox: batch mode must be sync|async|off not %q", mode)
+		return nil, errors.Errorf("dropbox: batch mode must be sync|async|off not %q", mode)
 	}

 	b := &batcher{
@@ -135,7 +135,7 @@ func (b *batcher) finishBatch(ctx context.Context, items []*files.UploadSessionF
 		return err != nil, err
 	})
 	if err != nil {
-		return nil, fmt.Errorf("batch commit failed: %w", err)
+		return nil, errors.Wrap(err, "batch commit failed")
 	}
 	return batchStatus, nil
 }
@@ -147,14 +147,8 @@ func (b *batcher) finishBatchJobStatus(ctx context.Context, launchBatchStatus *f
 	}
 	var batchStatus *files.UploadSessionFinishBatchJobStatus
 	sleepTime := 100 * time.Millisecond
-	const maxSleepTime = 1 * time.Second
-	startTime := time.Now()
-	try := 1
-	for {
-		remaining := time.Duration(b.f.opt.BatchCommitTimeout) - time.Since(startTime)
-		if remaining < 0 {
-			break
-		}
+	const maxTries = 120
+	for try := 1; try <= maxTries; try++ {
 		err = b.f.pacer.Call(func() (bool, error) {
 			batchStatus, err = b.f.srv.UploadSessionFinishBatchCheck(&async.PollArg{
 				AsyncJobId: launchBatchStatus.AsyncJobId,
@@ -162,25 +156,23 @@ func (b *batcher) finishBatchJobStatus(ctx context.Context, launchBatchStatus *f
 			return shouldRetry(ctx, err)
 		})
 		if err != nil {
-			fs.Debugf(b.f, "Wait for batch: sleeping for %v after error: %v: try %d remaining %v", sleepTime, err, try, remaining)
+			fs.Debugf(b.f, "Wait for batch: sleeping for %v after error: %v: try %d/%d", sleepTime, err, try, maxTries)
 		} else {
 			if batchStatus.Tag == "complete" {
-				fs.Debugf(b.f, "Upload batch completed in %v", time.Since(startTime))
 				return batchStatus.Complete, nil
 			}
-			fs.Debugf(b.f, "Wait for batch: sleeping for %v after status: %q: try %d remaining %v", sleepTime, batchStatus.Tag, try, remaining)
+			fs.Debugf(b.f, "Wait for batch: sleeping for %v after status: %q: try %d/%d", sleepTime, batchStatus.Tag, try, maxTries)
 		}
 		time.Sleep(sleepTime)
 		sleepTime *= 2
-		if sleepTime > maxSleepTime {
-			sleepTime = maxSleepTime
+		if sleepTime > time.Second {
+			sleepTime = time.Second
 		}
-		try++
 	}
 	if err == nil {
 		err = errors.New("batch didn't complete")
 	}
-	return nil, fmt.Errorf("wait for batch failed after %d tries in %v: %w", try, time.Since(startTime), err)
+	return nil, errors.Wrapf(err, "wait for batch failed after %d tries", maxTries)
 }

 // commit a batch
@@ -216,13 +208,13 @@ func (b *batcher) commitBatch(ctx context.Context, items []*files.UploadSessionF
 	case "complete":
 		complete = batchStatus.Complete
 	default:
-		return fmt.Errorf("batch returned unknown status %q", batchStatus.Tag)
+		return errors.Errorf("batch returned unknown status %q", batchStatus.Tag)
 	}

 	// Check we got the right number of entries
 	entries := complete.Entries
 	if len(entries) != len(results) {
-		return fmt.Errorf("expecting %d items in batch but got %d", len(results), len(entries))
+		return errors.Errorf("expecting %d items in batch but got %d", len(results), len(entries))
 	}

 	// Report results to clients
@@ -250,7 +242,7 @@ func (b *batcher) commitBatch(ctx context.Context, items []*files.UploadSessionF
 					errorTag += "/" + item.Failure.PropertiesError.Tag
 				}
 			}
-			resp.err = fmt.Errorf("batch upload failed: %s", errorTag)
+			resp.err = errors.Errorf("batch upload failed: %s", errorTag)
 		}
 		if !b.async {
 			results[i] <- resp
@@ -261,7 +253,7 @@ func (b *batcher) commitBatch(ctx context.Context, items []*files.UploadSessionF

 	// Report an error if any failed in the batch
 	if errorTag != "" {
-		return fmt.Errorf("batch had %d errors: last error: %s", errorCount, errorTag)
+		return errors.Errorf("batch had %d errors: last error: %s", errorCount, errorTag)
 	}

 	fs.Debugf(b.f, "Committed %s", desc)
--- a/backend/dropbox/dropbox.go
+++ b/backend/dropbox/dropbox.go
@@ -23,7 +23,6 @@ of path_display and all will be well.

 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"path"
@@ -32,13 +31,14 @@ import (
 	"time"
 	"unicode/utf8"

-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/auth"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/common"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/files"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/sharing"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/team"
-	"github.com/dropbox/dropbox-sdk-go-unofficial/v6/dropbox/users"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/auth"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/common"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/files"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/sharing"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/team"
+	"github.com/dropbox/dropbox-sdk-go-unofficial/dropbox/users"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/dropbox/dbhash"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
@@ -66,7 +66,7 @@ const (
 	//
 	// Speed vs chunk size uploading a 1 GiB file on 2017-11-22
 	//
-	// Chunk Size MiB, Speed MiB/s, % of max
+	// Chunk Size MiB, Speed MiByte/s, % of max
 	// 1	1.364	11%
 	// 2	2.443	19%
 	// 4	4.288	33%
@@ -154,7 +154,7 @@ func init() {
 		},
 		Options: append(oauthutil.SharedOptions, []fs.Option{{
 			Name: "chunk_size",
-			Help: fmt.Sprintf(`Upload chunk size (< %v).
+			Help: fmt.Sprintf(`Upload chunk size. (< %v).

 Any files larger than this will be uploaded in chunks of this size.

@@ -252,7 +252,7 @@ maximise throughput.
 			Advanced: true,
 		}, {
 			Name: "batch_timeout",
-			Help: `Max time to allow an idle upload batch before uploading.
+			Help: `Max time to allow an idle upload batch before uploading

 If an upload batch is idle for more than this long then it will be
 uploaded.
@@ -266,11 +266,6 @@ default based on the batch_mode in use.
 `,
 			Default:  fs.Duration(0),
 			Advanced: true,
-		}, {
-			Name:     "batch_commit_timeout",
-			Help:     `Max time to wait for a batch to finish comitting`,
-			Default:  fs.Duration(10 * time.Minute),
-			Advanced: true,
 		}, {
 			Name:     config.ConfigEncoding,
 			Help:     config.ConfigEncodingHelp,
@@ -290,16 +285,15 @@ default based on the batch_mode in use.

 // Options defines the configuration for this backend
 type Options struct {
-	ChunkSize          fs.SizeSuffix        `config:"chunk_size"`
-	Impersonate        string               `config:"impersonate"`
-	SharedFiles        bool                 `config:"shared_files"`
-	SharedFolders      bool                 `config:"shared_folders"`
-	BatchMode          string               `config:"batch_mode"`
-	BatchSize          int                  `config:"batch_size"`
-	BatchTimeout       fs.Duration          `config:"batch_timeout"`
-	BatchCommitTimeout fs.Duration          `config:"batch_commit_timeout"`
-	AsyncBatch         bool                 `config:"async_batch"`
-	Enc                encoder.MultiEncoder `config:"encoding"`
+	ChunkSize     fs.SizeSuffix        `config:"chunk_size"`
+	Impersonate   string               `config:"impersonate"`
+	SharedFiles   bool                 `config:"shared_files"`
+	SharedFolders bool                 `config:"shared_folders"`
+	BatchMode     string               `config:"batch_mode"`
+	BatchSize     int                  `config:"batch_size"`
+	BatchTimeout  fs.Duration          `config:"batch_timeout"`
+	AsyncBatch    bool                 `config:"async_batch"`
+	Enc           encoder.MultiEncoder `config:"encoding"`
 }

 // Fs represents a remote dropbox server
@@ -363,24 +357,24 @@ func shouldRetry(ctx context.Context, err error) (bool, error) {
 	if err == nil {
 		return false, err
 	}
-	errString := err.Error()
+	baseErrString := errors.Cause(err).Error()
 	// First check for specific errors
-	if strings.Contains(errString, "insufficient_space") {
+	if strings.Contains(baseErrString, "insufficient_space") {
 		return false, fserrors.FatalError(err)
-	} else if strings.Contains(errString, "malformed_path") {
+	} else if strings.Contains(baseErrString, "malformed_path") {
 		return false, fserrors.NoRetryError(err)
 	}
 	// Then handle any official Retry-After header from Dropbox's SDK
 	switch e := err.(type) {
 	case auth.RateLimitAPIError:
 		if e.RateLimitError.RetryAfter > 0 {
-			fs.Logf(errString, "Too many requests or write operations. Trying again in %d seconds.", e.RateLimitError.RetryAfter)
+			fs.Logf(baseErrString, "Too many requests or write operations. Trying again in %d seconds.", e.RateLimitError.RetryAfter)
 			err = pacer.RetryAfterError(err, time.Duration(e.RateLimitError.RetryAfter)*time.Second)
 		}
 		return true, err
 	}
 	// Keep old behavior for backward compatibility
-	if strings.Contains(errString, "too_many_write_operations") || strings.Contains(errString, "too_many_requests") || errString == "" {
+	if strings.Contains(baseErrString, "too_many_write_operations") || strings.Contains(baseErrString, "too_many_requests") || baseErrString == "" {
 		return true, err
 	}
 	return fserrors.ShouldRetry(err), err
@@ -389,10 +383,10 @@ func shouldRetry(ctx context.Context, err error) (bool, error) {
 func checkUploadChunkSize(cs fs.SizeSuffix) error {
 	const minChunkSize = fs.SizeSuffixBase
 	if cs < minChunkSize {
-		return fmt.Errorf("%s is less than %s", cs, minChunkSize)
+		return errors.Errorf("%s is less than %s", cs, minChunkSize)
 	}
 	if cs > maxChunkSize {
-		return fmt.Errorf("%s is greater than %s", cs, maxChunkSize)
+		return errors.Errorf("%s is greater than %s", cs, maxChunkSize)
 	}
 	return nil
 }
@@ -415,7 +409,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 	err = checkUploadChunkSize(opt.ChunkSize)
 	if err != nil {
-		return nil, fmt.Errorf("dropbox: chunk size: %w", err)
+		return nil, errors.Wrap(err, "dropbox: chunk size")
 	}

 	// Convert the old token if it exists.  The old token was just
@@ -427,13 +421,13 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		newToken := fmt.Sprintf(`{"access_token":"%s","token_type":"bearer","expiry":"0001-01-01T00:00:00Z"}`, oldToken)
 		err := config.SetValueAndSave(name, config.ConfigToken, newToken)
 		if err != nil {
-			return nil, fmt.Errorf("NewFS convert token: %w", err)
+			return nil, errors.Wrap(err, "NewFS convert token")
 		}
 	}

 	oAuthClient, _, err := oauthutil.NewClient(ctx, name, m, getOauthConfig(m))
 	if err != nil {
-		return nil, fmt.Errorf("failed to configure dropbox: %w", err)
+		return nil, errors.Wrap(err, "failed to configure dropbox")
 	}

 	ci := fs.GetConfig(ctx)
@@ -474,7 +468,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		memberIds, err := f.team.MembersGetInfo(args)

 		if err != nil {
-			return nil, fmt.Errorf("invalid dropbox team member: %q: %w", opt.Impersonate, err)
+			return nil, errors.Wrapf(err, "invalid dropbox team member: %q", opt.Impersonate)
 		}

 		cfg.AsMemberID = memberIds[0].MemberInfo.Profile.MemberProfile.TeamMemberId
@@ -551,7 +545,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 			return shouldRetry(ctx, err)
 		})
 		if err != nil {
-			return nil, fmt.Errorf("get current account failed: %w", err)
+			return nil, errors.Wrap(err, "get current account failed")
 		}
 		switch x := acc.RootInfo.(type) {
 		case *common.TeamRootInfo:
@@ -559,30 +553,28 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		case *common.UserRootInfo:
 			f.ns = x.RootNamespaceId
 		default:
-			return nil, fmt.Errorf("unknown RootInfo type %v %T", acc.RootInfo, acc.RootInfo)
+			return nil, errors.Errorf("unknown RootInfo type %v %T", acc.RootInfo, acc.RootInfo)
 		}
 		fs.Debugf(f, "Using root namespace %q", f.ns)
 	}
 	f.setRoot(root)

 	// See if the root is actually an object
-	if f.root != "" {
-		_, err = f.getFileMetadata(ctx, f.slashRoot)
-		if err == nil {
-			newRoot := path.Dir(f.root)
-			if newRoot == "." {
-				newRoot = ""
-			}
-			f.setRoot(newRoot)
-			// return an error with an fs which points to the parent
-			return f, fs.ErrorIsFile
+	_, err = f.getFileMetadata(ctx, f.slashRoot)
+	if err == nil {
+		newRoot := path.Dir(f.root)
+		if newRoot == "." {
+			newRoot = ""
 		}
+		f.setRoot(newRoot)
+		// return an error with an fs which points to the parent
+		return f, fs.ErrorIsFile
 	}
 	return f, nil
 }

 // headerGenerator for dropbox sdk
-func (f *Fs) headerGenerator(hostType string, namespace string, route string) map[string]string {
+func (f *Fs) headerGenerator(hostType string, style string, namespace string, route string) map[string]string {
 	if f.ns == "" {
 		return map[string]string{}
 	}
@@ -632,9 +624,6 @@ func (f *Fs) getFileMetadata(ctx context.Context, filePath string) (fileInfo *fi
 	}
 	fileInfo, ok := entry.(*files.FileMetadata)
 	if !ok {
-		if _, ok = entry.(*files.FolderMetadata); ok {
-			return nil, fs.ErrorIsDir
-		}
 		return nil, fs.ErrorNotAFile
 	}
 	return fileInfo, nil
@@ -712,7 +701,7 @@ func (f *Fs) listSharedFolders(ctx context.Context) (entries fs.DirEntries, err
 				return shouldRetry(ctx, err)
 			})
 			if err != nil {
-				return nil, fmt.Errorf("list continue: %w", err)
+				return nil, errors.Wrap(err, "list continue")
 			}
 		}
 		for _, entry := range res.Entries {
@@ -786,7 +775,7 @@ func (f *Fs) listReceivedFiles(ctx context.Context) (entries fs.DirEntries, err
 				return shouldRetry(ctx, err)
 			})
 			if err != nil {
-				return nil, fmt.Errorf("list continue: %w", err)
+				return nil, errors.Wrap(err, "list continue")
 			}
 		}
 		for _, entry := range res.Entries {
@@ -796,7 +785,7 @@ func (f *Fs) listReceivedFiles(ctx context.Context) (entries fs.DirEntries, err
 				fs:      f,
 				url:     entry.PreviewUrl,
 				remote:  entryPath,
-				modTime: *entry.TimeInvited,
+				modTime: entry.TimeInvited,
 			}
 			if err != nil {
 				return nil, err
@@ -852,7 +841,6 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 			arg := files.ListFolderArg{
 				Path:      f.opt.Enc.FromStandardPath(root),
 				Recursive: false,
-				Limit:     1000,
 			}
 			if root == "/" {
 				arg.Path = "" // Specify root folder as empty string
@@ -880,7 +868,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 				return shouldRetry(ctx, err)
 			})
 			if err != nil {
-				return nil, fmt.Errorf("list continue: %w", err)
+				return nil, errors.Wrap(err, "list continue")
 			}
 		}
 		for _, entry := range res.Entries {
@@ -992,7 +980,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) (err error)
 		// check directory exists
 		_, err = f.getDirMetadata(ctx, root)
 		if err != nil {
-			return fmt.Errorf("Rmdir: %w", err)
+			return errors.Wrap(err, "Rmdir")
 		}

 		root = f.opt.Enc.FromStandardPath(root)
@@ -1010,7 +998,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) (err error)
 			return shouldRetry(ctx, err)
 		})
 		if err != nil {
-			return fmt.Errorf("Rmdir: %w", err)
+			return errors.Wrap(err, "Rmdir")
 		}
 		if len(res.Entries) != 0 {
 			return errors.New("directory not empty")
@@ -1076,7 +1064,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 		return shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("copy failed: %w", err)
+		return nil, errors.Wrap(err, "copy failed")
 	}

 	// Set the metadata
@@ -1086,7 +1074,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	}
 	err = dstObj.setMetadataFromEntry(fileInfo)
 	if err != nil {
-		return nil, fmt.Errorf("copy failed: %w", err)
+		return nil, errors.Wrap(err, "copy failed")
 	}

 	return dstObj, nil
@@ -1137,7 +1125,7 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 		return shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("move failed: %w", err)
+		return nil, errors.Wrap(err, "move failed")
 	}

 	// Set the metadata
@@ -1147,7 +1135,7 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	}
 	err = dstObj.setMetadataFromEntry(fileInfo)
 	if err != nil {
-		return nil, fmt.Errorf("move failed: %w", err)
+		return nil, errors.Wrap(err, "move failed")
 	}
 	return dstObj, nil
 }
@@ -1172,7 +1160,14 @@ func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration,
 	}
 	if expire < fs.DurationOff {
 		expiryTime := time.Now().Add(time.Duration(expire)).UTC().Round(time.Second)
-		createArg.Settings.Expires = &expiryTime
+		createArg.Settings.Expires = expiryTime
+	}
+	// FIXME note we can't set Settings for non enterprise dropbox
+	// because of https://github.com/dropbox/dropbox-sdk-go-unofficial/issues/75
+	// however this only goes wrong when we set Expires, so as a
+	// work-around remove Settings unless expire is set.
+	if expire == fs.DurationOff {
+		createArg.Settings = nil
 	}

 	var linkRes sharing.IsSharedLinkMetadata
@@ -1255,7 +1250,7 @@ func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string
 		return shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return fmt.Errorf("MoveDir failed: %w", err)
+		return errors.Wrap(err, "MoveDir failed")
 	}

 	return nil
@@ -1269,7 +1264,7 @@ func (f *Fs) About(ctx context.Context) (usage *fs.Usage, err error) {
 		return shouldRetry(ctx, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("about failed: %w", err)
+		return nil, errors.Wrap(err, "about failed")
 	}
 	var total uint64
 	if q.Allocation != nil {
@@ -1409,7 +1404,7 @@ func (f *Fs) changeNotifyRunner(ctx context.Context, notifyFunc func(string, fs.
 			return shouldRetry(ctx, err)
 		})
 		if err != nil {
-			return "", fmt.Errorf("list continue: %w", err)
+			return "", errors.Wrap(err, "list continue")
 		}
 		cursor = changeList.Cursor
 		var entryType fs.EntryType
@@ -1488,7 +1483,7 @@ func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
 	}
 	err := o.readMetaData(ctx)
 	if err != nil {
-		return "", fmt.Errorf("failed to read hash from metadata: %w", err)
+		return "", errors.Wrap(err, "failed to read hash from metadata")
 	}
 	return o.hash, nil
 }
@@ -1741,13 +1736,12 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	}
 	remote := o.remotePath()
 	if ignoredFiles.MatchString(remote) {
-		return fserrors.NoRetryError(fmt.Errorf("file name %q is disallowed - not uploading", path.Base(remote)))
+		return fserrors.NoRetryError(errors.Errorf("file name %q is disallowed - not uploading", path.Base(remote)))
 	}
 	commitInfo := files.NewCommitInfo(o.fs.opt.Enc.FromStandardPath(o.remotePath()))
 	commitInfo.Mode.Tag = "overwrite"
 	// The Dropbox API only accepts timestamps in UTC with second precision.
-	clientModified := src.ModTime(ctx).UTC().Round(time.Second)
-	commitInfo.ClientModified = &clientModified
+	commitInfo.ClientModified = src.ModTime(ctx).UTC().Round(time.Second)
 	// Don't attempt to create filenames that are too long
 	if cErr := checkPathLength(commitInfo.Path); cErr != nil {
 		return cErr
@@ -1765,14 +1759,14 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		})
 	}
 	if err != nil {
-		return fmt.Errorf("upload failed: %w", err)
+		return errors.Wrap(err, "upload failed")
 	}
 	// If we haven't received data back from batch upload then fake it
 	//
 	// This will only happen if we are uploading async batches
 	if entry == nil {
 		o.bytes = size
-		o.modTime = *commitInfo.ClientModified
+		o.modTime = commitInfo.ClientModified
 		o.hash = "" // we don't have this
 		return nil
 	}
--- a/backend/fichier/api.go
+++ b/backend/fichier/api.go
@@ -2,8 +2,6 @@ package fichier

 import (
 	"context"
-	"errors"
-	"fmt"
 	"io"
 	"net/http"
 	"net/url"
@@ -12,6 +10,7 @@ import (
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/fserrors"
 	"github.com/rclone/rclone/lib/rest"
@@ -82,7 +81,7 @@ func (f *Fs) readFileInfo(ctx context.Context, url string) (*File, error) {
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't read file info: %w", err)
+		return nil, errors.Wrap(err, "couldn't read file info")
 	}

 	return &file, err
@@ -111,7 +110,7 @@ func (f *Fs) getDownloadToken(ctx context.Context, url string) (*GetTokenRespons
 		return doretry || !validToken(&token), err
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't list files: %w", err)
+		return nil, errors.Wrap(err, "couldn't list files")
 	}

 	return &token, nil
@@ -145,7 +144,7 @@ func (f *Fs) listSharedFiles(ctx context.Context, id string) (entries fs.DirEntr
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't list files: %w", err)
+		return nil, errors.Wrap(err, "couldn't list files")
 	}

 	entries = make([]fs.DirEntry, len(sharedFiles))
@@ -174,7 +173,7 @@ func (f *Fs) listFiles(ctx context.Context, directoryID int) (filesList *FilesLi
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't list files: %w", err)
+		return nil, errors.Wrap(err, "couldn't list files")
 	}
 	for i := range filesList.Items {
 		item := &filesList.Items[i]
@@ -202,7 +201,7 @@ func (f *Fs) listFolders(ctx context.Context, directoryID int) (foldersList *Fol
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't list folders: %w", err)
+		return nil, errors.Wrap(err, "couldn't list folders")
 	}
 	foldersList.Name = f.opt.Enc.ToStandardName(foldersList.Name)
 	for i := range foldersList.SubFolders {
@@ -296,7 +295,7 @@ func (f *Fs) makeFolder(ctx context.Context, leaf string, folderID int) (respons
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't create folder: %w", err)
+		return nil, errors.Wrap(err, "couldn't create folder")
 	}

 	// fs.Debugf(f, "Created Folder `%s` in id `%s`", name, directoryID)
@@ -323,10 +322,10 @@ func (f *Fs) removeFolder(ctx context.Context, name string, folderID int) (respo
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't remove folder: %w", err)
+		return nil, errors.Wrap(err, "couldn't remove folder")
 	}
 	if response.Status != "OK" {
-		return nil, fmt.Errorf("can't remove folder: %s", response.Message)
+		return nil, errors.Errorf("can't remove folder: %s", response.Message)
 	}

 	// fs.Debugf(f, "Removed Folder with id `%s`", directoryID)
@@ -353,7 +352,7 @@ func (f *Fs) deleteFile(ctx context.Context, url string) (response *GenericOKRes
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't remove file: %w", err)
+		return nil, errors.Wrap(err, "couldn't remove file")
 	}

 	// fs.Debugf(f, "Removed file with url `%s`", url)
@@ -380,7 +379,7 @@ func (f *Fs) moveFile(ctx context.Context, url string, folderID int, rename stri
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't copy file: %w", err)
+		return nil, errors.Wrap(err, "couldn't copy file")
 	}

 	return response, nil
@@ -405,7 +404,7 @@ func (f *Fs) copyFile(ctx context.Context, url string, folderID int, rename stri
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't copy file: %w", err)
+		return nil, errors.Wrap(err, "couldn't copy file")
 	}

 	return response, nil
@@ -433,7 +432,7 @@ func (f *Fs) renameFile(ctx context.Context, url string, newName string) (respon
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't rename file: %w", err)
+		return nil, errors.Wrap(err, "couldn't rename file")
 	}

 	return response, nil
@@ -454,7 +453,7 @@ func (f *Fs) getUploadNode(ctx context.Context) (response *GetUploadNodeResponse
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("didnt got an upload node: %w", err)
+		return nil, errors.Wrap(err, "didnt got an upload node")
 	}

 	// fs.Debugf(f, "Got Upload node")
@@ -498,7 +497,7 @@ func (f *Fs) uploadFile(ctx context.Context, in io.Reader, size int64, fileName,
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't upload file: %w", err)
+		return nil, errors.Wrap(err, "couldn't upload file")
 	}

 	// fs.Debugf(f, "Uploaded File `%s`", fileName)
@@ -532,7 +531,7 @@ func (f *Fs) endUpload(ctx context.Context, uploadID string, nodeurl string) (re
 	})

 	if err != nil {
-		return nil, fmt.Errorf("couldn't finish file upload: %w", err)
+		return nil, errors.Wrap(err, "couldn't finish file upload")
 	}

 	return response, err
--- a/backend/fichier/fichier.go
+++ b/backend/fichier/fichier.go
@@ -2,7 +2,6 @@ package fichier

 import (
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -10,6 +9,7 @@ import (
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
@@ -37,20 +37,23 @@ func init() {
 		Description: "1Fichier",
 		NewFs:       NewFs,
 		Options: []fs.Option{{
-			Help: "Your API Key, get it from https://1fichier.com/console/params.pl.",
+			Help: "Your API Key, get it from https://1fichier.com/console/params.pl",
 			Name: "api_key",
 		}, {
-			Help:     "If you want to download a shared folder, add this parameter.",
+			Help:     "If you want to download a shared folder, add this parameter",
 			Name:     "shared_folder",
+			Required: false,
 			Advanced: true,
 		}, {
-			Help:       "If you want to download a shared file that is password protected, add this parameter.",
+			Help:       "If you want to download a shared file that is password protected, add this parameter",
 			Name:       "file_password",
+			Required:   false,
 			Advanced:   true,
 			IsPassword: true,
 		}, {
-			Help:       "If you want to list the files in a shared folder that is password protected, add this parameter.",
+			Help:       "If you want to list the files in a shared folder that is password protected, add this parameter",
 			Name:       "folder_password",
+			Required:   false,
 			Advanced:   true,
 			IsPassword: true,
 		}, {
@@ -451,10 +454,10 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	if currentDirectoryID == directoryID {
 		resp, err := f.renameFile(ctx, srcObj.file.URL, leaf)
 		if err != nil {
-			return nil, fmt.Errorf("couldn't rename file: %w", err)
+			return nil, errors.Wrap(err, "couldn't rename file")
 		}
 		if resp.Status != "OK" {
-			return nil, fmt.Errorf("couldn't rename file: %s", resp.Message)
+			return nil, errors.Errorf("couldn't rename file: %s", resp.Message)
 		}
 		url = resp.URLs[0].URL
 	} else {
@@ -464,10 +467,10 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 		}
 		resp, err := f.moveFile(ctx, srcObj.file.URL, folderID, leaf)
 		if err != nil {
-			return nil, fmt.Errorf("couldn't move file: %w", err)
+			return nil, errors.Wrap(err, "couldn't move file")
 		}
 		if resp.Status != "OK" {
-			return nil, fmt.Errorf("couldn't move file: %s", resp.Message)
+			return nil, errors.Errorf("couldn't move file: %s", resp.Message)
 		}
 		url = resp.URLs[0]
 	}
@@ -500,10 +503,10 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	}
 	resp, err := f.copyFile(ctx, srcObj.file.URL, folderID, leaf)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't move file: %w", err)
+		return nil, errors.Wrap(err, "couldn't move file")
 	}
 	if resp.Status != "OK" {
-		return nil, fmt.Errorf("couldn't move file: %s", resp.Message)
+		return nil, errors.Errorf("couldn't move file: %s", resp.Message)
 	}

 	file, err := f.readFileInfo(ctx, resp.URLs[0].ToURL)
@@ -514,32 +517,6 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	return dstObj, nil
 }

-// About gets quota information
-func (f *Fs) About(ctx context.Context) (usage *fs.Usage, err error) {
-	opts := rest.Opts{
-		Method:      "POST",
-		Path:        "/user/info.cgi",
-		ContentType: "application/json",
-	}
-	var accountInfo AccountInfo
-	var resp *http.Response
-	err = f.pacer.Call(func() (bool, error) {
-		resp, err = f.rest.CallJSON(ctx, &opts, nil, &accountInfo)
-		return shouldRetry(ctx, resp, err)
-	})
-	if err != nil {
-		return nil, fmt.Errorf("failed to read user info: %w", err)
-	}
-
-	// FIXME max upload size would be useful to use in Update
-	usage = &fs.Usage{
-		Used:  fs.NewUsageValue(accountInfo.ColdStorage),                                    // bytes in use
-		Total: fs.NewUsageValue(accountInfo.AvailableColdStorage),                           // bytes total
-		Free:  fs.NewUsageValue(accountInfo.AvailableColdStorage - accountInfo.ColdStorage), // bytes free
-	}
-	return usage, nil
-}
-
 // PublicLink adds a "readable by anyone with link" permission on the given file or folder.
 func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration, unlink bool) (string, error) {
 	o, err := f.NewObject(ctx, remote)
--- a/backend/fichier/object.go
+++ b/backend/fichier/object.go
@@ -2,12 +2,11 @@ package fichier

 import (
 	"context"
-	"errors"
-	"fmt"
 	"io"
 	"net/http"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/lib/rest"
@@ -123,7 +122,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	// Delete duplicate after successful upload
 	err = o.Remove(ctx)
 	if err != nil {
-		return fmt.Errorf("failed to remove old version: %w", err)
+		return errors.Wrap(err, "failed to remove old version")
 	}

 	// Replace guts of old object with new one
--- a/backend/fichier/structs.go
+++ b/backend/fichier/structs.go
@@ -182,34 +182,3 @@ type FoldersList struct {
 	Status     string   `json:"Status"`
 	SubFolders []Folder `json:"sub_folders"`
 }
-
-// AccountInfo is the structure how 1Fichier returns user info
-type AccountInfo struct {
-	StatsDate               string `json:"stats_date"`
-	MailRM                  string `json:"mail_rm"`
-	DefaultQuota            int64  `json:"default_quota"`
-	UploadForbidden         string `json:"upload_forbidden"`
-	PageLimit               int    `json:"page_limit"`
-	ColdStorage             int64  `json:"cold_storage"`
-	Status                  string `json:"status"`
-	UseCDN                  string `json:"use_cdn"`
-	AvailableColdStorage    int64  `json:"available_cold_storage"`
-	DefaultPort             string `json:"default_port"`
-	DefaultDomain           int    `json:"default_domain"`
-	Email                   string `json:"email"`
-	DownloadMenu            string `json:"download_menu"`
-	FTPDID                  int    `json:"ftp_did"`
-	DefaultPortFiles        string `json:"default_port_files"`
-	FTPReport               string `json:"ftp_report"`
-	OverQuota               int64  `json:"overquota"`
-	AvailableStorage        int64  `json:"available_storage"`
-	CDN                     string `json:"cdn"`
-	Offer                   string `json:"offer"`
-	SubscriptionEnd         string `json:"subscription_end"`
-	TFA                     string `json:"2fa"`
-	AllowedColdStorage      int64  `json:"allowed_cold_storage"`
-	HotStorage              int64  `json:"hot_storage"`
-	DefaultColdStorageQuota int64  `json:"default_cold_storage_quota"`
-	FTPMode                 string `json:"ftp_mode"`
-	RUReport                string `json:"ru_report"`
-}
--- a/backend/filefabric/api/types.go
+++ b/backend/filefabric/api/types.go
@@ -69,29 +69,11 @@ func (i *Int) UnmarshalJSON(data []byte) error {
 	return json.Unmarshal(data, (*int)(i))
 }

-// String represents an string which can be represented in JSON as a
-// quoted string or an integer.
-type String string
-
-// MarshalJSON turns a String into JSON
-func (s *String) MarshalJSON() (out []byte, err error) {
-	return json.Marshal((*string)(s))
-}
-
-// UnmarshalJSON turns JSON into a String
-func (s *String) UnmarshalJSON(data []byte) error {
-	err := json.Unmarshal(data, (*string)(s))
-	if err != nil {
-		*s = String(data)
-	}
-	return nil
-}
-
 // Status return returned in all status responses
 type Status struct {
 	Code    string `json:"status"`
 	Message string `json:"statusmessage"`
-	TaskID  String `json:"taskid"`
+	TaskID  string `json:"taskid"`
 	// Warning string `json:"warning"` // obsolete
 }

--- a/backend/filefabric/filefabric.go
+++ b/backend/filefabric/filefabric.go
@@ -17,7 +17,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/base64"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -33,6 +32,7 @@ import (
 	"github.com/rclone/rclone/lib/encoder"
 	"github.com/rclone/rclone/lib/random"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/filefabric/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
@@ -65,7 +65,7 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "url",
-			Help:     "URL of the Enterprise File Fabric to connect to.",
+			Help:     "URL of the Enterprise File Fabric to connect to",
 			Required: true,
 			Examples: []fs.OptionExample{{
 				Value: "https://storagemadeeasy.com",
@@ -79,15 +79,14 @@ func init() {
 			}},
 		}, {
 			Name: "root_folder_id",
-			Help: `ID of the root folder.
-
+			Help: `ID of the root folder
 Leave blank normally.

 Fill in to make rclone start with directory of a given ID.
 `,
 		}, {
 			Name: "permanent_token",
-			Help: `Permanent Authentication Token.
+			Help: `Permanent Authentication Token

 A Permanent Authentication Token can be created in the Enterprise File
 Fabric, on the users Dashboard under Security, there is an entry
@@ -100,7 +99,7 @@ For more info see: https://docs.storagemadeeasy.com/organisationcloud/api-tokens
 `,
 		}, {
 			Name: "token",
-			Help: `Session Token.
+			Help: `Session Token

 This is a session token which rclone caches in the config file. It is
 usually valid for 1 hour.
@@ -110,14 +109,14 @@ Don't set this value - rclone will set it automatically.
 			Advanced: true,
 		}, {
 			Name: "token_expiry",
-			Help: `Token expiry time.
+			Help: `Token expiry time

 Don't set this value - rclone will set it automatically.
 `,
 			Advanced: true,
 		}, {
 			Name: "version",
-			Help: `Version read from the file fabric.
+			Help: `Version read from the file fabric

 Don't set this value - rclone will set it automatically.
 `,
@@ -223,14 +222,13 @@ var retryStatusCodes = []struct {
 		// delete in that folder. Please try again later or use
 		// another name. (error_background)
 		code:  "error_background",
-		sleep: 1 * time.Second,
+		sleep: 6 * time.Second,
 	},
 }

 // shouldRetry returns a boolean as to whether this resp and err
 // deserve to be retried.  It returns the err as a convenience
-// try should be the number of the tries so far, counting up from 1
-func (f *Fs) shouldRetry(ctx context.Context, resp *http.Response, err error, status api.OKError, try int) (bool, error) {
+func (f *Fs) shouldRetry(ctx context.Context, resp *http.Response, err error, status api.OKError) (bool, error) {
 	if fserrors.ContextError(ctx, &err) {
 		return false, err
 	}
@@ -246,10 +244,9 @@ func (f *Fs) shouldRetry(ctx context.Context, resp *http.Response, err error, st
 			for _, retryCode := range retryStatusCodes {
 				if code == retryCode.code {
 					if retryCode.sleep > 0 {
-						// make this thread only sleep exponentially increasing extra time
-						sleepTime := retryCode.sleep << (try - 1)
-						fs.Debugf(f, "Sleeping for %v to wait for %q error to clear", sleepTime, retryCode.code)
-						time.Sleep(sleepTime)
+						// make this thread only sleep extra time
+						fs.Debugf(f, "Sleeping for %v to wait for %q error to clear", retryCode.sleep, retryCode.code)
+						time.Sleep(retryCode.sleep)
 					}
 					return true, err
 				}
@@ -267,7 +264,7 @@ func (f *Fs) readMetaDataForPath(ctx context.Context, rootID string, path string
 		"pid":  rootID,
 	}, &resp, nil)
 	if err != nil {
-		return nil, fmt.Errorf("failed to check path exists: %w", err)
+		return nil, errors.Wrap(err, "failed to check path exists")
 	}
 	if resp.Exists != "y" {
 		return nil, fs.ErrorObjectNotFound
@@ -308,7 +305,7 @@ func (f *Fs) getApplianceInfo(ctx context.Context) error {
 		"token": "*",
 	}, &applianceInfo, nil)
 	if err != nil {
-		return fmt.Errorf("failed to read appliance version: %w", err)
+		return errors.Wrap(err, "failed to read appliance version")
 	}
 	f.opt.Version = applianceInfo.SoftwareVersionLabel
 	f.m.Set("version", f.opt.Version)
@@ -349,7 +346,7 @@ func (f *Fs) getToken(ctx context.Context) (token string, err error) {
 		"authtoken": f.opt.PermanentToken,
 	}, &info, nil)
 	if err != nil {
-		return "", fmt.Errorf("failed to get session token: %w", err)
+		return "", errors.Wrap(err, "failed to get session token")
 	}
 	refreshed = true
 	now = now.Add(tokenLifeTime)
@@ -403,13 +400,11 @@ func (f *Fs) rpc(ctx context.Context, function string, p params, result api.OKEr
 		ContentType: "application/x-www-form-urlencoded",
 		Options:     options,
 	}
-	try := 0
 	err = f.pacer.Call(func() (bool, error) {
-		try++
 		// Refresh the body each retry
 		opts.Body = strings.NewReader(data.Encode())
 		resp, err = f.srv.CallJSON(ctx, &opts, nil, result)
-		return f.shouldRetry(ctx, resp, err, result, try)
+		return f.shouldRetry(ctx, resp, err, result)
 	})
 	if err != nil {
 		return resp, err
@@ -562,7 +557,7 @@ func (f *Fs) CreateDir(ctx context.Context, pathID, leaf string) (newID string,
 		"fi_name": f.opt.Enc.FromStandardName(leaf),
 	}, &info, nil)
 	if err != nil {
-		return "", fmt.Errorf("failed to create directory: %w", err)
+		return "", errors.Wrap(err, "failed to create directory")
 	}
 	// fmt.Printf("...Id %q\n", *info.Id)
 	return info.Item.ID, nil
@@ -595,7 +590,7 @@ OUTER:
 		var info api.GetFolderContentsResponse
 		_, err = f.rpc(ctx, "getFolderContents", p, &info, nil)
 		if err != nil {
-			return false, fmt.Errorf("failed to list directory: %w", err)
+			return false, errors.Wrap(err, "failed to list directory")
 		}
 		for i := range info.Items {
 			item := &info.Items[i]
@@ -726,7 +721,7 @@ func (f *Fs) deleteObject(ctx context.Context, id string) (err error) {
 		"completedeletion": "n",
 	}, &info, nil)
 	if err != nil {
-		return fmt.Errorf("failed to delete file: %w", err)
+		return errors.Wrap(err, "failed to delete file")
 	}
 	return nil
 }
@@ -763,7 +758,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
 	}, &info, nil)
 	f.dirCache.FlushDir(dir)
 	if err != nil {
-		return fmt.Errorf("failed to remove directory: %w", err)
+		return errors.Wrap(err, "failed to remove directory")
 	}
 	return nil
 }
@@ -825,7 +820,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	}
 	_, err = f.rpc(ctx, "doCopyFile", p, &info, nil)
 	if err != nil {
-		return nil, fmt.Errorf("failed to copy file: %w", err)
+		return nil, errors.Wrap(err, "failed to copy file")
 	}
 	err = dstObj.setMetaData(&info.Item)
 	if err != nil {
@@ -844,7 +839,7 @@ func (f *Fs) Purge(ctx context.Context, dir string) error {
 }

 // Wait for the the background task to complete if necessary
-func (f *Fs) waitForBackgroundTask(ctx context.Context, taskID api.String) (err error) {
+func (f *Fs) waitForBackgroundTask(ctx context.Context, taskID string) (err error) {
 	if taskID == "" || taskID == "0" {
 		// No task to wait for
 		return nil
@@ -857,7 +852,7 @@ func (f *Fs) waitForBackgroundTask(ctx context.Context, taskID api.String) (err
 			"taskid": taskID,
 		}, &info, nil)
 		if err != nil {
-			return fmt.Errorf("failed to wait for task %s to complete: %w", taskID, err)
+			return errors.Wrapf(err, "failed to wait for task %s to complete", taskID)
 		}
 		if len(info.Tasks) == 0 {
 			// task has finished
@@ -890,7 +885,7 @@ func (f *Fs) renameLeaf(ctx context.Context, isDir bool, id string, newLeaf stri
 		"fi_name": newLeaf,
 	}, &info, nil)
 	if err != nil {
-		return nil, fmt.Errorf("failed to rename leaf: %w", err)
+		return nil, errors.Wrap(err, "failed to rename leaf")
 	}
 	err = f.waitForBackgroundTask(ctx, info.Status.TaskID)
 	if err != nil {
@@ -934,7 +929,7 @@ func (f *Fs) move(ctx context.Context, isDir bool, id, oldLeaf, newLeaf, oldDire
 			"dir_id": newDirectoryID,
 		}, &info, nil)
 		if err != nil {
-			return nil, fmt.Errorf("failed to move file to new directory: %w", err)
+			return nil, errors.Wrap(err, "failed to move file to new directory")
 		}
 		item = &info.Item
 		err = f.waitForBackgroundTask(ctx, info.Status.TaskID)
@@ -1037,7 +1032,7 @@ func (f *Fs) CleanUp(ctx context.Context) (err error) {
 	var info api.EmptyResponse
 	_, err = f.rpc(ctx, "emptyTrashInBackground", params{}, &info, nil)
 	if err != nil {
-		return fmt.Errorf("failed to empty trash: %w", err)
+		return errors.Wrap(err, "failed to empty trash")
 	}
 	return nil
 }
@@ -1094,7 +1089,7 @@ func (o *Object) Size() int64 {
 // setMetaData sets the metadata from info
 func (o *Object) setMetaData(info *api.Item) (err error) {
 	if info.Type != api.ItemTypeFile {
-		return fs.ErrorIsDir
+		return errors.Wrapf(fs.ErrorNotAFile, "%q is %q", o.remote, info.Type)
 	}
 	o.hasMetaData = true
 	o.size = info.Size
@@ -1164,7 +1159,7 @@ func (o *Object) modifyFile(ctx context.Context, keyValues [][2]string) error {
 		"data":  data.String(),
 	}, &info, nil)
 	if err != nil {
-		return fmt.Errorf("failed to update metadata: %w", err)
+		return errors.Wrap(err, "failed to update metadata")
 	}
 	return o.setMetaData(&info.Item)
 }
@@ -1247,7 +1242,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	}
 	_, err = o.fs.rpc(ctx, "doInitUpload", p, &upload, nil)
 	if err != nil {
-		return fmt.Errorf("failed to initialize upload: %w", err)
+		return errors.Wrap(err, "failed to initialize upload")
 	}

 	// Cancel the upload if aborted or it fails
@@ -1283,20 +1278,18 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		var contentLength = size
 		opts.ContentLength = &contentLength // NB CallJSON scribbles on this which is naughty
 	}
-	try := 0
 	err = o.fs.pacer.CallNoRetry(func() (bool, error) {
-		try++
 		resp, err := o.fs.srv.CallJSON(ctx, &opts, nil, &uploader)
-		return o.fs.shouldRetry(ctx, resp, err, nil, try)
+		return o.fs.shouldRetry(ctx, resp, err, nil)
 	})
 	if err != nil {
-		return fmt.Errorf("failed to upload: %w", err)
+		return errors.Wrap(err, "failed to upload")
 	}
 	if uploader.Success != "y" {
-		return fmt.Errorf("upload failed")
+		return errors.Errorf("upload failed")
 	}
 	if size > 0 && uploader.FileSize != size {
-		return fmt.Errorf("upload failed: size mismatch: want %d got %d", size, uploader.FileSize)
+		return errors.Errorf("upload failed: size mismatch: want %d got %d", size, uploader.FileSize)
 	}

 	// Now finalize the file
@@ -1308,7 +1301,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	}
 	_, err = o.fs.rpc(ctx, "doCompleteUpload", p, &finalize, nil)
 	if err != nil {
-		return fmt.Errorf("failed to finalize upload: %w", err)
+		return errors.Wrap(err, "failed to finalize upload")
 	}
 	finalized = true

--- a/backend/ftp/ftp.go
+++ b/backend/ftp/ftp.go
@@ -4,8 +4,6 @@ package ftp
 import (
 	"context"
 	"crypto/tls"
-	"errors"
-	"fmt"
 	"io"
 	"net"
 	"net/textproto"
@@ -16,6 +14,7 @@ import (
 	"time"

 	"github.com/jlaffaye/ftp"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/config"
@@ -49,24 +48,26 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "host",
-			Help:     "FTP host to connect to.\n\nE.g. \"ftp.example.com\".",
+			Help:     "FTP host to connect to",
 			Required: true,
+			Examples: []fs.OptionExample{{
+				Value: "ftp.example.com",
+				Help:  "Connect to ftp.example.com",
+			}},
 		}, {
-			Name:    "user",
-			Help:    "FTP username.",
-			Default: currentUser,
+			Name: "user",
+			Help: "FTP username, leave blank for current username, " + currentUser,
 		}, {
-			Name:    "port",
-			Help:    "FTP port number.",
-			Default: 21,
+			Name: "port",
+			Help: "FTP port, leave blank to use default (21)",
 		}, {
 			Name:       "pass",
-			Help:       "FTP password.",
+			Help:       "FTP password",
 			IsPassword: true,
+			Required:   true,
 		}, {
 			Name: "tls",
-			Help: `Use Implicit FTPS (FTP over TLS).
-
+			Help: `Use Implicit FTPS (FTP over TLS)
 When using implicit FTP over TLS the client connects using TLS
 right from the start which breaks compatibility with
 non-TLS-aware servers. This is usually served over port 990 rather
@@ -74,41 +75,35 @@ than port 21. Cannot be used in combination with explicit FTP.`,
 			Default: false,
 		}, {
 			Name: "explicit_tls",
-			Help: `Use Explicit FTPS (FTP over TLS).
-
+			Help: `Use Explicit FTPS (FTP over TLS)
 When using explicit FTP over TLS the client explicitly requests
 security from the server in order to upgrade a plain text connection
 to an encrypted one. Cannot be used in combination with implicit FTP.`,
 			Default: false,
 		}, {
 			Name:     "concurrency",
-			Help:     "Maximum number of FTP simultaneous connections, 0 for unlimited.",
+			Help:     "Maximum number of FTP simultaneous connections, 0 for unlimited",
 			Default:  0,
 			Advanced: true,
 		}, {
 			Name:     "no_check_certificate",
-			Help:     "Do not verify the TLS certificate of the server.",
+			Help:     "Do not verify the TLS certificate of the server",
 			Default:  false,
 			Advanced: true,
 		}, {
 			Name:     "disable_epsv",
-			Help:     "Disable using EPSV even if server advertises support.",
+			Help:     "Disable using EPSV even if server advertises support",
 			Default:  false,
 			Advanced: true,
 		}, {
 			Name:     "disable_mlsd",
-			Help:     "Disable using MLSD even if server advertises support.",
-			Default:  false,
-			Advanced: true,
-		}, {
-			Name:     "writing_mdtm",
-			Help:     "Use MDTM to set modification time (VsFtpd quirk)",
+			Help:     "Disable using MLSD even if server advertises support",
 			Default:  false,
 			Advanced: true,
 		}, {
 			Name:    "idle_timeout",
 			Default: fs.Duration(60 * time.Second),
-			Help: `Max time before closing idle connections.
+			Help: `Max time before closing idle connections

 If no connections have been returned to the connection pool in the time
 given, rclone will empty the connection pool.
@@ -121,51 +116,17 @@ Set to 0 to keep connections indefinitely.
 			Help:     "Maximum time to wait for a response to close.",
 			Default:  fs.Duration(60 * time.Second),
 			Advanced: true,
-		}, {
-			Name: "tls_cache_size",
-			Help: `Size of TLS session cache for all control and data connections.
-
-TLS cache allows to resume TLS sessions and reuse PSK between connections.
-Increase if default size is not enough resulting in TLS resumption errors.
-Enabled by default. Use 0 to disable.`,
-			Default:  32,
-			Advanced: true,
-		}, {
-			Name:     "disable_tls13",
-			Help:     "Disable TLS 1.3 (workaround for FTP servers with buggy TLS)",
-			Default:  false,
-			Advanced: true,
-		}, {
-			Name:     "shut_timeout",
-			Help:     "Maximum time to wait for data connection closing status.",
-			Default:  fs.Duration(60 * time.Second),
-			Advanced: true,
-		}, {
-			Name:    "ask_password",
-			Default: false,
-			Help: `Allow asking for FTP password when needed.
-
-If this is set and no password is supplied then rclone will ask for a password
-`,
-			Advanced: true,
 		}, {
 			Name:     config.ConfigEncoding,
 			Help:     config.ConfigEncodingHelp,
 			Advanced: true,
-			// The FTP protocol can't handle trailing spaces
-			// (for instance, pureftpd turns them into '_')
+			// The FTP protocol can't handle trailing spaces (for instance
+			// pureftpd turns them into _)
+			//
+			// proftpd can't handle '*' in file names
+			// pureftpd can't handle '[', ']' or '*'
 			Default: (encoder.Display |
 				encoder.EncodeRightSpace),
-			Examples: []fs.OptionExample{{
-				Value: "Asterisk,Ctl,Dot,Slash",
-				Help:  "ProFTPd can't handle '*' in file names",
-			}, {
-				Value: "BackSlash,Ctl,Del,Dot,RightSpace,Slash,SquareBracket",
-				Help:  "PureFTPd can't handle '[]' or '*' in file names",
-			}, {
-				Value: "Ctl,LeftPeriod,Slash",
-				Help:  "VsFTPd can't handle file names starting with dot",
-			}},
 		}},
 	})
 }
@@ -178,17 +139,12 @@ type Options struct {
 	Port              string               `config:"port"`
 	TLS               bool                 `config:"tls"`
 	ExplicitTLS       bool                 `config:"explicit_tls"`
-	TLSCacheSize      int                  `config:"tls_cache_size"`
-	DisableTLS13      bool                 `config:"disable_tls13"`
 	Concurrency       int                  `config:"concurrency"`
 	SkipVerifyTLSCert bool                 `config:"no_check_certificate"`
 	DisableEPSV       bool                 `config:"disable_epsv"`
 	DisableMLSD       bool                 `config:"disable_mlsd"`
-	WritingMDTM       bool                 `config:"writing_mdtm"`
 	IdleTimeout       fs.Duration          `config:"idle_timeout"`
 	CloseTimeout      fs.Duration          `config:"close_timeout"`
-	ShutTimeout       fs.Duration          `config:"shut_timeout"`
-	AskPassword       bool                 `config:"ask_password"`
 	Enc               encoder.MultiEncoder `config:"encoding"`
 }

@@ -209,9 +165,6 @@ type Fs struct {
 	tokens   *pacer.TokenDispenser
 	tlsConf  *tls.Config
 	pacer    *fs.Pacer // pacer for FTP connections
-	fGetTime bool      // true if the ftp library accepts GetTime
-	fSetTime bool      // true if the ftp library accepts SetTime
-	fLstTime bool      // true if the List call returns precise time
 }

 // Object describes an FTP file
@@ -226,7 +179,6 @@ type FileInfo struct {
 	Name    string
 	Size    uint64
 	ModTime time.Time
-	precise bool // true if the time is precise
 	IsDir   bool
 }

@@ -338,12 +290,6 @@ func (f *Fs) ftpConnection(ctx context.Context) (c *ftp.ServerConn, err error) {
 	if f.opt.DisableMLSD {
 		ftpConfig = append(ftpConfig, ftp.DialWithDisabledMLSD(true))
 	}
-	if f.opt.ShutTimeout != 0 && f.opt.ShutTimeout != fs.DurationOff {
-		ftpConfig = append(ftpConfig, ftp.DialWithShutTimeout(time.Duration(f.opt.ShutTimeout)))
-	}
-	if f.opt.WritingMDTM {
-		ftpConfig = append(ftpConfig, ftp.DialWithWritingMDTM(true))
-	}
 	if f.ci.Dump&(fs.DumpHeaders|fs.DumpBodies|fs.DumpRequests|fs.DumpResponses) != 0 {
 		ftpConfig = append(ftpConfig, ftp.DialWithDebugOutput(&debugLog{auth: f.ci.Dump&fs.DumpAuth != 0}))
 	}
@@ -360,7 +306,7 @@ func (f *Fs) ftpConnection(ctx context.Context) (c *ftp.ServerConn, err error) {
 		return false, nil
 	})
 	if err != nil {
-		err = fmt.Errorf("failed to make FTP connection to %q: %w", f.dialAddr, err)
+		err = errors.Wrapf(err, "failed to make FTP connection to %q", f.dialAddr)
 	}
 	return c, err
 }
@@ -407,8 +353,8 @@ func (f *Fs) putFtpConnection(pc **ftp.ServerConn, err error) {
 	*pc = nil
 	if err != nil {
 		// If not a regular FTP error code then check the connection
-		var tpErr *textproto.Error
-		if !errors.As(err, &tpErr) {
+		_, isRegularError := errors.Cause(err).(*textproto.Error)
+		if !isRegularError {
 			nopErr := c.NoOp()
 			if nopErr != nil {
 				fs.Debugf(f, "Connection failed, closing: %v", nopErr)
@@ -454,14 +400,9 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (ff fs.Fs
 	if err != nil {
 		return nil, err
 	}
-	pass := ""
-	if opt.AskPassword && opt.Pass == "" {
-		pass = config.GetPassword("FTP server password")
-	} else {
-		pass, err = obscure.Reveal(opt.Pass)
-		if err != nil {
-			return nil, fmt.Errorf("NewFS decrypt password: %w", err)
-		}
+	pass, err := obscure.Reveal(opt.Pass)
+	if err != nil {
+		return nil, errors.Wrap(err, "NewFS decrypt password")
 	}
 	user := opt.User
 	if user == "" {
@@ -486,12 +427,6 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (ff fs.Fs
 			ServerName:         opt.Host,
 			InsecureSkipVerify: opt.SkipVerifyTLSCert,
 		}
-		if opt.TLSCacheSize > 0 {
-			tlsConfig.ClientSessionCache = tls.NewLRUClientSessionCache(opt.TLSCacheSize)
-		}
-		if opt.DisableTLS13 {
-			tlsConfig.MaxVersion = tls.VersionTLS12
-		}
 	}
 	u := protocol + path.Join(dialAddr+"/", root)
 	ci := fs.GetConfig(ctx)
@@ -518,13 +453,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (ff fs.Fs
 	// Make a connection and pool it to return errors early
 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("NewFs: %w", err)
-	}
-	f.fGetTime = c.IsGetTimeSupported()
-	f.fSetTime = c.IsSetTimeSupported()
-	f.fLstTime = c.IsTimePreciseInList()
-	if !f.fLstTime && f.fGetTime {
-		f.features.SlowModTime = true
+		return nil, errors.Wrap(err, "NewFs")
 	}
 	f.putFtpConnection(&c, nil)
 	if root != "" {
@@ -536,7 +465,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (ff fs.Fs
 		}
 		_, err := f.NewObject(ctx, remote)
 		if err != nil {
-			if err == fs.ErrorObjectNotFound || errors.Is(err, fs.ErrorNotAFile) {
+			if err == fs.ErrorObjectNotFound || errors.Cause(err) == fs.ErrorNotAFile {
 				// File doesn't exist so return old f
 				f.root = root
 				return f, nil
@@ -615,7 +544,7 @@ func (f *Fs) findItem(ctx context.Context, remote string) (entry *ftp.Entry, err

 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("findItem: %w", err)
+		return nil, errors.Wrap(err, "findItem")
 	}
 	files, err := c.List(f.dirFromStandardPath(dir))
 	f.putFtpConnection(&c, err)
@@ -644,12 +573,13 @@ func (f *Fs) NewObject(ctx context.Context, remote string) (o fs.Object, err err
 			fs:     f,
 			remote: remote,
 		}
-		o.info = &FileInfo{
+		info := &FileInfo{
 			Name:    remote,
 			Size:    entry.Size,
 			ModTime: entry.Time,
-			precise: f.fLstTime,
 		}
+		o.info = info
+
 		return o, nil
 	}
 	return nil, fs.ErrorObjectNotFound
@@ -659,7 +589,7 @@ func (f *Fs) NewObject(ctx context.Context, remote string) (o fs.Object, err err
 func (f *Fs) dirExists(ctx context.Context, remote string) (exists bool, err error) {
 	entry, err := f.findItem(ctx, remote)
 	if err != nil {
-		return false, fmt.Errorf("dirExists: %w", err)
+		return false, errors.Wrap(err, "dirExists")
 	}
 	if entry != nil && entry.Type == ftp.EntryTypeFolder {
 		return true, nil
@@ -680,7 +610,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 	// defer log.Trace(dir, "dir=%q", dir)("entries=%v, err=%v", &entries, &err)
 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("list: %w", err)
+		return nil, errors.Wrap(err, "list")
 	}

 	var listErr error
@@ -718,7 +648,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 	if len(files) == 0 {
 		exists, err := f.dirExists(ctx, dir)
 		if err != nil {
-			return nil, fmt.Errorf("list: %w", err)
+			return nil, errors.Wrap(err, "list")
 		}
 		if !exists {
 			return nil, fs.ErrorDirNotFound
@@ -744,7 +674,6 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 				Name:    newremote,
 				Size:    object.Size,
 				ModTime: object.Time,
-				precise: f.fLstTime,
 			}
 			o.info = info
 			entries = append(entries, o)
@@ -758,18 +687,8 @@ func (f *Fs) Hashes() hash.Set {
 	return 0
 }

-// Precision shows whether modified time is supported or not depending on the
-// FTP server capabilities, namely whether FTP server:
-// - accepts the MDTM command to get file time (fGetTime)
-//   or supports MLSD returning precise file time in the list (fLstTime)
-// - accepts the MFMT command to set file time (fSetTime)
-//   or non-standard form of the MDTM command (fSetTime, too)
-//   used by VsFtpd for the same purpose (WritingMDTM)
-// See "mdtm_write" in https://security.appspot.com/vsftpd/vsftpd_conf.html
+// Precision shows Modified Time not supported
 func (f *Fs) Precision() time.Duration {
-	if (f.fGetTime || f.fLstTime) && f.fSetTime {
-		return time.Second
-	}
 	return fs.ModTimeNotSupported
 }

@@ -782,7 +701,7 @@ func (f *Fs) Put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options .
 	// fs.Debugf(f, "Trying to put file %s", src.Remote())
 	err := f.mkParentDir(ctx, src.Remote())
 	if err != nil {
-		return nil, fmt.Errorf("Put mkParentDir failed: %w", err)
+		return nil, errors.Wrap(err, "Put mkParentDir failed")
 	}
 	o := &Object{
 		fs:     f,
@@ -805,7 +724,7 @@ func (f *Fs) getInfo(ctx context.Context, remote string) (fi *FileInfo, err erro

 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("getInfo: %w", err)
+		return nil, errors.Wrap(err, "getInfo")
 	}
 	files, err := c.List(f.dirFromStandardPath(dir))
 	f.putFtpConnection(&c, err)
@@ -821,7 +740,6 @@ func (f *Fs) getInfo(ctx context.Context, remote string) (fi *FileInfo, err erro
 				Name:    remote,
 				Size:    file.Size,
 				ModTime: file.Time,
-				precise: f.fLstTime,
 				IsDir:   file.Type == ftp.EntryTypeFolder,
 			}
 			return info, nil
@@ -843,7 +761,7 @@ func (f *Fs) mkdir(ctx context.Context, abspath string) error {
 		}
 		return fs.ErrorIsFile
 	} else if err != fs.ErrorObjectNotFound {
-		return fmt.Errorf("mkdir %q failed: %w", abspath, err)
+		return errors.Wrapf(err, "mkdir %q failed", abspath)
 	}
 	parent := path.Dir(abspath)
 	err = f.mkdir(ctx, parent)
@@ -852,7 +770,7 @@ func (f *Fs) mkdir(ctx context.Context, abspath string) error {
 	}
 	c, connErr := f.getFtpConnection(ctx)
 	if connErr != nil {
-		return fmt.Errorf("mkdir: %w", connErr)
+		return errors.Wrap(connErr, "mkdir")
 	}
 	err = c.MakeDir(f.dirFromStandardPath(abspath))
 	f.putFtpConnection(&c, err)
@@ -888,7 +806,7 @@ func (f *Fs) Mkdir(ctx context.Context, dir string) (err error) {
 func (f *Fs) Rmdir(ctx context.Context, dir string) error {
 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return fmt.Errorf("Rmdir: %w", translateErrorFile(err))
+		return errors.Wrap(translateErrorFile(err), "Rmdir")
 	}
 	err = c.RemoveDir(f.dirFromStandardPath(path.Join(f.root, dir)))
 	f.putFtpConnection(&c, err)
@@ -904,11 +822,11 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	}
 	err := f.mkParentDir(ctx, remote)
 	if err != nil {
-		return nil, fmt.Errorf("Move mkParentDir failed: %w", err)
+		return nil, errors.Wrap(err, "Move mkParentDir failed")
 	}
 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("Move: %w", err)
+		return nil, errors.Wrap(err, "Move")
 	}
 	err = c.Rename(
 		f.opt.Enc.FromStandardPath(path.Join(srcObj.fs.root, srcObj.remote)),
@@ -916,11 +834,11 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	)
 	f.putFtpConnection(&c, err)
 	if err != nil {
-		return nil, fmt.Errorf("Move Rename failed: %w", err)
+		return nil, errors.Wrap(err, "Move Rename failed")
 	}
 	dstObj, err := f.NewObject(ctx, remote)
 	if err != nil {
-		return nil, fmt.Errorf("Move NewObject failed: %w", err)
+		return nil, errors.Wrap(err, "Move NewObject failed")
 	}
 	return dstObj, nil
 }
@@ -950,19 +868,19 @@ func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string
 		}
 		return fs.ErrorIsFile
 	} else if err != fs.ErrorObjectNotFound {
-		return fmt.Errorf("DirMove getInfo failed: %w", err)
+		return errors.Wrapf(err, "DirMove getInfo failed")
 	}

 	// Make sure the parent directory exists
 	err = f.mkdir(ctx, path.Dir(dstPath))
 	if err != nil {
-		return fmt.Errorf("DirMove mkParentDir dst failed: %w", err)
+		return errors.Wrap(err, "DirMove mkParentDir dst failed")
 	}

 	// Do the move
 	c, err := f.getFtpConnection(ctx)
 	if err != nil {
-		return fmt.Errorf("DirMove: %w", err)
+		return errors.Wrap(err, "DirMove")
 	}
 	err = c.Rename(
 		f.dirFromStandardPath(srcPath),
@@ -970,7 +888,7 @@ func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string
 	)
 	f.putFtpConnection(&c, err)
 	if err != nil {
-		return fmt.Errorf("DirMove Rename(%q,%q) failed: %w", srcPath, dstPath, err)
+		return errors.Wrapf(err, "DirMove Rename(%q,%q) failed", srcPath, dstPath)
 	}
 	return nil
 }
@@ -1007,41 +925,12 @@ func (o *Object) Size() int64 {

 // ModTime returns the modification time of the object
 func (o *Object) ModTime(ctx context.Context) time.Time {
-	if !o.info.precise && o.fs.fGetTime {
-		c, err := o.fs.getFtpConnection(ctx)
-		if err == nil {
-			path := path.Join(o.fs.root, o.remote)
-			path = o.fs.opt.Enc.FromStandardPath(path)
-			modTime, err := c.GetTime(path)
-			if err == nil && o.info != nil {
-				o.info.ModTime = modTime
-				o.info.precise = true
-			}
-			o.fs.putFtpConnection(&c, err)
-		}
-	}
 	return o.info.ModTime
 }

 // SetModTime sets the modification time of the object
 func (o *Object) SetModTime(ctx context.Context, modTime time.Time) error {
-	if !o.fs.fSetTime {
-		fs.Errorf(o.fs, "SetModTime is not supported")
-		return nil
-	}
-	c, err := o.fs.getFtpConnection(ctx)
-	if err != nil {
-		return err
-	}
-	path := path.Join(o.fs.root, o.remote)
-	path = o.fs.opt.Enc.FromStandardPath(path)
-	err = c.SetTime(path, modTime.In(time.UTC))
-	if err == nil && o.info != nil {
-		o.info.ModTime = modTime
-		o.info.precise = true
-	}
-	o.fs.putFtpConnection(&c, err)
-	return err
+	return nil
 }

 // Storable returns a boolean as to whether this object is storable
@@ -1074,11 +963,7 @@ func (f *ftpReadCloser) Close() error {
 		errchan <- f.rc.Close()
 	}()
 	// Wait for Close for up to 60 seconds by default
-	closeTimeout := f.f.opt.CloseTimeout
-	if closeTimeout == 0 {
-		closeTimeout = fs.DurationOff
-	}
-	timer := time.NewTimer(time.Duration(closeTimeout))
+	timer := time.NewTimer(time.Duration(f.f.opt.CloseTimeout))
 	select {
 	case err = <-errchan:
 		timer.Stop()
@@ -1127,12 +1012,12 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (rc io.Read
 	}
 	c, err := o.fs.getFtpConnection(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("open: %w", err)
+		return nil, errors.Wrap(err, "open")
 	}
 	fd, err := c.RetrFrom(o.fs.opt.Enc.FromStandardPath(path), uint64(offset))
 	if err != nil {
 		o.fs.putFtpConnection(&c, err)
-		return nil, fmt.Errorf("open: %w", err)
+		return nil, errors.Wrap(err, "open")
 	}
 	rc = &ftpReadCloser{rc: readers.NewLimitedReadCloser(fd, limit), c: c, f: o.fs}
 	return rc, nil
@@ -1162,7 +1047,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	}
 	c, err := o.fs.getFtpConnection(ctx)
 	if err != nil {
-		return fmt.Errorf("Update: %w", err)
+		return errors.Wrap(err, "Update")
 	}
 	err = c.Stor(o.fs.opt.Enc.FromStandardPath(path), in)
 	// Ignore error 250 here - send by some servers
@@ -1177,18 +1062,14 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 	}
 	if err != nil {
 		_ = c.Quit() // toss this connection to avoid sync errors
-		// recycle connection in advance to let remove() find free token
-		o.fs.putFtpConnection(nil, err)
 		remove()
-		return fmt.Errorf("update stor: %w", err)
+		o.fs.putFtpConnection(nil, err)
+		return errors.Wrap(err, "update stor")
 	}
 	o.fs.putFtpConnection(&c, nil)
-	if err = o.SetModTime(ctx, src.ModTime(ctx)); err != nil {
-		return fmt.Errorf("SetModTime: %w", err)
-	}
 	o.info, err = o.fs.getInfo(ctx, path)
 	if err != nil {
-		return fmt.Errorf("update getinfo: %w", err)
+		return errors.Wrap(err, "update getinfo")
 	}
 	return nil
 }
@@ -1207,7 +1088,7 @@ func (o *Object) Remove(ctx context.Context) (err error) {
 	} else {
 		c, err := o.fs.getFtpConnection(ctx)
 		if err != nil {
-			return fmt.Errorf("Remove: %w", err)
+			return errors.Wrap(err, "Remove")
 		}
 		err = c.Delete(o.fs.opt.Enc.FromStandardPath(path))
 		o.fs.putFtpConnection(&c, err)
--- a/backend/ftp/ftp_internal_test.go
+++ b/backend/ftp/ftp_internal_test.go
@@ -1,115 +0,0 @@
-package ftp
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/config/configmap"
-	"github.com/rclone/rclone/fs/object"
-	"github.com/rclone/rclone/fstest"
-	"github.com/rclone/rclone/fstest/fstests"
-	"github.com/rclone/rclone/lib/readers"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-type settings map[string]interface{}
-
-func deriveFs(ctx context.Context, t *testing.T, f fs.Fs, opts settings) fs.Fs {
-	fsName := strings.Split(f.Name(), "{")[0] // strip off hash
-	configMap := configmap.Simple{}
-	for key, val := range opts {
-		configMap[key] = fmt.Sprintf("%v", val)
-	}
-	remote := fmt.Sprintf("%s,%s:%s", fsName, configMap.String(), f.Root())
-	fixFs, err := fs.NewFs(ctx, remote)
-	require.NoError(t, err)
-	return fixFs
-}
-
-// test that big file uploads do not cause network i/o timeout
-func (f *Fs) testUploadTimeout(t *testing.T) {
-	const (
-		fileSize    = 100000000             // 100 MiB
-		idleTimeout = 40 * time.Millisecond // small because test server is local
-		maxTime     = 10 * time.Second      // prevent test hangup
-	)
-
-	if testing.Short() {
-		t.Skip("not running with -short")
-	}
-
-	ctx := context.Background()
-	ci := fs.GetConfig(ctx)
-	saveLowLevelRetries := ci.LowLevelRetries
-	saveTimeout := ci.Timeout
-	defer func() {
-		ci.LowLevelRetries = saveLowLevelRetries
-		ci.Timeout = saveTimeout
-	}()
-	ci.LowLevelRetries = 1
-	ci.Timeout = idleTimeout
-
-	upload := func(concurrency int, shutTimeout time.Duration) (obj fs.Object, err error) {
-		fixFs := deriveFs(ctx, t, f, settings{
-			"concurrency":  concurrency,
-			"shut_timeout": shutTimeout,
-		})
-
-		// Make test object
-		fileTime := fstest.Time("2020-03-08T09:30:00.000000000Z")
-		meta := object.NewStaticObjectInfo("upload-timeout.test", fileTime, int64(fileSize), true, nil, nil)
-		data := readers.NewPatternReader(int64(fileSize))
-
-		// Run upload and ensure maximum time
-		done := make(chan bool)
-		deadline := time.After(maxTime)
-		go func() {
-			obj, err = fixFs.Put(ctx, data, meta)
-			done <- true
-		}()
-		select {
-		case <-done:
-		case <-deadline:
-			t.Fatalf("Upload got stuck for %v !", maxTime)
-		}
-
-		return obj, err
-	}
-
-	// non-zero shut_timeout should fix i/o errors
-	obj, err := upload(f.opt.Concurrency, time.Second)
-	assert.NoError(t, err)
-	assert.NotNil(t, obj)
-	if obj != nil {
-		_ = obj.Remove(ctx)
-	}
-}
-
-// rclone must support precise time with ProFtpd and PureFtpd out of the box.
-// The VsFtpd server does not support the MFMT command to set file time like
-// other servers but by default supports the MDTM command in the non-standard
-// two-argument form for the same purpose.
-// See "mdtm_write" in https://security.appspot.com/vsftpd/vsftpd_conf.html
-func (f *Fs) testTimePrecision(t *testing.T) {
-	name := f.Name()
-	if pos := strings.Index(name, "{"); pos != -1 {
-		name = name[:pos]
-	}
-	switch name {
-	case "TestFTPProftpd", "TestFTPPureftpd", "TestFTPVsftpd":
-		assert.LessOrEqual(t, f.Precision(), time.Second)
-	}
-}
-
-// InternalTest dispatches all internal tests
-func (f *Fs) InternalTest(t *testing.T) {
-	t.Run("UploadTimeout", f.testUploadTimeout)
-	t.Run("TimePrecision", f.testTimePrecision)
-}
-
-var _ fstests.InternalTester = (*Fs)(nil)
--- a/backend/ftp/ftp_test.go
+++ b/backend/ftp/ftp_test.go
@@ -9,27 +9,25 @@ import (
 	"github.com/rclone/rclone/fstest/fstests"
 )

-// TestIntegration runs integration tests against rclone FTP server
+// TestIntegration runs integration tests against the remote
 func TestIntegration(t *testing.T) {
-	fstests.Run(t, &fstests.Opt{
-		RemoteName: "TestFTPRclone:",
-		NilObject:  (*ftp.Object)(nil),
-	})
-}
-
-// TestIntegrationProftpd runs integration tests against proFTPd
-func TestIntegrationProftpd(t *testing.T) {
-	if *fstest.RemoteName != "" {
-		t.Skip("skipping as -remote is set")
-	}
 	fstests.Run(t, &fstests.Opt{
 		RemoteName: "TestFTPProftpd:",
 		NilObject:  (*ftp.Object)(nil),
 	})
 }

-// TestIntegrationPureftpd runs integration tests against pureFTPd
-func TestIntegrationPureftpd(t *testing.T) {
+func TestIntegration2(t *testing.T) {
+	if *fstest.RemoteName != "" {
+		t.Skip("skipping as -remote is set")
+	}
+	fstests.Run(t, &fstests.Opt{
+		RemoteName: "TestFTPRclone:",
+		NilObject:  (*ftp.Object)(nil),
+	})
+}
+
+func TestIntegration3(t *testing.T) {
 	if *fstest.RemoteName != "" {
 		t.Skip("skipping as -remote is set")
 	}
@@ -39,13 +37,12 @@ func TestIntegrationPureftpd(t *testing.T) {
 	})
 }

-// TestIntegrationVsftpd runs integration tests against vsFTPd
-func TestIntegrationVsftpd(t *testing.T) {
-	if *fstest.RemoteName != "" {
-		t.Skip("skipping as -remote is set")
-	}
-	fstests.Run(t, &fstests.Opt{
-		RemoteName: "TestFTPVsftpd:",
-		NilObject:  (*ftp.Object)(nil),
-	})
-}
+// func TestIntegration4(t *testing.T) {
+// 	if *fstest.RemoteName != "" {
+// 		t.Skip("skipping as -remote is set")
+// 	}
+// 	fstests.Run(t, &fstests.Opt{
+// 		RemoteName: "TestFTPVsftpd:",
+// 		NilObject:  (*ftp.Object)(nil),
+// 	})
+// }
--- a/backend/googlecloudstorage/googlecloudstorage.go
+++ b/backend/googlecloudstorage/googlecloudstorage.go
@@ -16,7 +16,6 @@ import (
 	"context"
 	"encoding/base64"
 	"encoding/hex"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -26,6 +25,7 @@ import (
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
@@ -89,58 +89,58 @@ func init() {
 		},
 		Options: append(oauthutil.SharedOptions, []fs.Option{{
 			Name: "project_number",
-			Help: "Project number.\n\nOptional - needed only for list/create/delete buckets - see your developer console.",
+			Help: "Project number.\nOptional - needed only for list/create/delete buckets - see your developer console.",
 		}, {
 			Name: "service_account_file",
-			Help: "Service Account Credentials JSON file path.\n\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login." + env.ShellExpandHelp,
+			Help: "Service Account Credentials JSON file path\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login." + env.ShellExpandHelp,
 		}, {
 			Name: "service_account_credentials",
-			Help: "Service Account Credentials JSON blob.\n\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
+			Help: "Service Account Credentials JSON blob\nLeave blank normally.\nNeeded only if you want use SA instead of interactive login.",
 			Hide: fs.OptionHideBoth,
 		}, {
 			Name:    "anonymous",
-			Help:    "Access public buckets and objects without credentials.\n\nSet to 'true' if you just want to download files and don't configure credentials.",
+			Help:    "Access public buckets and objects without credentials\nSet to 'true' if you just want to download files and don't configure credentials.",
 			Default: false,
 		}, {
 			Name: "object_acl",
 			Help: "Access Control List for new objects.",
 			Examples: []fs.OptionExample{{
 				Value: "authenticatedRead",
-				Help:  "Object owner gets OWNER access.\nAll Authenticated Users get READER access.",
+				Help:  "Object owner gets OWNER access, and all Authenticated Users get READER access.",
 			}, {
 				Value: "bucketOwnerFullControl",
-				Help:  "Object owner gets OWNER access.\nProject team owners get OWNER access.",
+				Help:  "Object owner gets OWNER access, and project team owners get OWNER access.",
 			}, {
 				Value: "bucketOwnerRead",
-				Help:  "Object owner gets OWNER access.\nProject team owners get READER access.",
+				Help:  "Object owner gets OWNER access, and project team owners get READER access.",
 			}, {
 				Value: "private",
-				Help:  "Object owner gets OWNER access.\nDefault if left blank.",
+				Help:  "Object owner gets OWNER access [default if left blank].",
 			}, {
 				Value: "projectPrivate",
-				Help:  "Object owner gets OWNER access.\nProject team members get access according to their roles.",
+				Help:  "Object owner gets OWNER access, and project team members get access according to their roles.",
 			}, {
 				Value: "publicRead",
-				Help:  "Object owner gets OWNER access.\nAll Users get READER access.",
+				Help:  "Object owner gets OWNER access, and all Users get READER access.",
 			}},
 		}, {
 			Name: "bucket_acl",
 			Help: "Access Control List for new buckets.",
 			Examples: []fs.OptionExample{{
 				Value: "authenticatedRead",
-				Help:  "Project team owners get OWNER access.\nAll Authenticated Users get READER access.",
+				Help:  "Project team owners get OWNER access, and all Authenticated Users get READER access.",
 			}, {
 				Value: "private",
-				Help:  "Project team owners get OWNER access.\nDefault if left blank.",
+				Help:  "Project team owners get OWNER access [default if left blank].",
 			}, {
 				Value: "projectPrivate",
 				Help:  "Project team members get access according to their roles.",
 			}, {
 				Value: "publicRead",
-				Help:  "Project team owners get OWNER access.\nAll Users get READER access.",
+				Help:  "Project team owners get OWNER access, and all Users get READER access.",
 			}, {
 				Value: "publicReadWrite",
-				Help:  "Project team owners get OWNER access.\nAll Users get WRITER access.",
+				Help:  "Project team owners get OWNER access, and all Users get WRITER access.",
 			}},
 		}, {
 			Name: "bucket_policy_only",
@@ -163,64 +163,64 @@ Docs: https://cloud.google.com/storage/docs/bucket-policy-only
 			Help: "Location for the newly created buckets.",
 			Examples: []fs.OptionExample{{
 				Value: "",
-				Help:  "Empty for default location (US)",
+				Help:  "Empty for default location (US).",
 			}, {
 				Value: "asia",
-				Help:  "Multi-regional location for Asia",
+				Help:  "Multi-regional location for Asia.",
 			}, {
 				Value: "eu",
-				Help:  "Multi-regional location for Europe",
+				Help:  "Multi-regional location for Europe.",
 			}, {
 				Value: "us",
-				Help:  "Multi-regional location for United States",
+				Help:  "Multi-regional location for United States.",
 			}, {
 				Value: "asia-east1",
-				Help:  "Taiwan",
+				Help:  "Taiwan.",
 			}, {
 				Value: "asia-east2",
-				Help:  "Hong Kong",
+				Help:  "Hong Kong.",
 			}, {
 				Value: "asia-northeast1",
-				Help:  "Tokyo",
+				Help:  "Tokyo.",
 			}, {
 				Value: "asia-south1",
-				Help:  "Mumbai",
+				Help:  "Mumbai.",
 			}, {
 				Value: "asia-southeast1",
-				Help:  "Singapore",
+				Help:  "Singapore.",
 			}, {
 				Value: "australia-southeast1",
-				Help:  "Sydney",
+				Help:  "Sydney.",
 			}, {
 				Value: "europe-north1",
-				Help:  "Finland",
+				Help:  "Finland.",
 			}, {
 				Value: "europe-west1",
-				Help:  "Belgium",
+				Help:  "Belgium.",
 			}, {
 				Value: "europe-west2",
-				Help:  "London",
+				Help:  "London.",
 			}, {
 				Value: "europe-west3",
-				Help:  "Frankfurt",
+				Help:  "Frankfurt.",
 			}, {
 				Value: "europe-west4",
-				Help:  "Netherlands",
+				Help:  "Netherlands.",
 			}, {
 				Value: "us-central1",
-				Help:  "Iowa",
+				Help:  "Iowa.",
 			}, {
 				Value: "us-east1",
-				Help:  "South Carolina",
+				Help:  "South Carolina.",
 			}, {
 				Value: "us-east4",
-				Help:  "Northern Virginia",
+				Help:  "Northern Virginia.",
 			}, {
 				Value: "us-west1",
-				Help:  "Oregon",
+				Help:  "Oregon.",
 			}, {
 				Value: "us-west2",
-				Help:  "California",
+				Help:  "California.",
 			}},
 		}, {
 			Name: "storage_class",
@@ -375,7 +375,7 @@ func (o *Object) split() (bucket, bucketPath string) {
 func getServiceAccountClient(ctx context.Context, credentialsData []byte) (*http.Client, error) {
 	conf, err := google.JWTConfigFromJSON(credentialsData, storageConfig.Scopes...)
 	if err != nil {
-		return nil, fmt.Errorf("error processing credentials: %w", err)
+		return nil, errors.Wrap(err, "error processing credentials")
 	}
 	ctxWithSpecialClient := oauthutil.Context(ctx, fshttp.NewClient(ctx))
 	return oauth2.NewClient(ctxWithSpecialClient, conf.TokenSource(ctxWithSpecialClient)), nil
@@ -408,7 +408,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	if opt.ServiceAccountCredentials == "" && opt.ServiceAccountFile != "" {
 		loadedCreds, err := ioutil.ReadFile(env.ShellExpand(opt.ServiceAccountFile))
 		if err != nil {
-			return nil, fmt.Errorf("error opening service account credentials file: %w", err)
+			return nil, errors.Wrap(err, "error opening service account credentials file")
 		}
 		opt.ServiceAccountCredentials = string(loadedCreds)
 	}
@@ -417,7 +417,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	} else if opt.ServiceAccountCredentials != "" {
 		oAuthClient, err = getServiceAccountClient(ctx, []byte(opt.ServiceAccountCredentials))
 		if err != nil {
-			return nil, fmt.Errorf("failed configuring Google Cloud Storage Service Account: %w", err)
+			return nil, errors.Wrap(err, "failed configuring Google Cloud Storage Service Account")
 		}
 	} else {
 		oAuthClient, _, err = oauthutil.NewClient(ctx, name, m, storageConfig)
@@ -425,7 +425,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 			ctx := context.Background()
 			oAuthClient, err = google.DefaultClient(ctx, storage.DevstorageFullControlScope)
 			if err != nil {
-				return nil, fmt.Errorf("failed to configure Google Cloud Storage: %w", err)
+				return nil, errors.Wrap(err, "failed to configure Google Cloud Storage")
 			}
 		}
 	}
@@ -449,7 +449,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	f.client = oAuthClient
 	f.svc, err = storage.New(f.client)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't create Google Cloud Storage client: %w", err)
+		return nil, errors.Wrap(err, "couldn't create Google Cloud Storage client")
 	}

 	if f.rootBucket != "" && f.rootDirectory != "" {
@@ -759,10 +759,10 @@ func (f *Fs) makeBucket(ctx context.Context, bucket string) (err error) {
 			return nil
 		} else if gErr, ok := err.(*googleapi.Error); ok {
 			if gErr.Code != http.StatusNotFound {
-				return fmt.Errorf("failed to get bucket: %w", err)
+				return errors.Wrap(err, "failed to get bucket")
 			}
 		} else {
-			return fmt.Errorf("failed to get bucket: %w", err)
+			return errors.Wrap(err, "failed to get bucket")
 		}

 		if f.opt.ProjectNumber == "" {
@@ -1065,7 +1065,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 	_, isRanging := req.Header["Range"]
 	if !(res.StatusCode == http.StatusOK || (isRanging && res.StatusCode == http.StatusPartialContent)) {
 		_ = res.Body.Close() // ignore error
-		return nil, fmt.Errorf("bad response: %d: %s", res.StatusCode, res.Status)
+		return nil, errors.Errorf("bad response: %d: %s", res.StatusCode, res.Status)
 	}
 	return res.Body, nil
 }
--- a/backend/googlephotos/googlephotos.go
+++ b/backend/googlephotos/googlephotos.go
@@ -6,7 +6,6 @@ package googlephotos
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -18,9 +17,9 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/googlephotos/api"
 	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/config"
 	"github.com/rclone/rclone/fs/config/configmap"
 	"github.com/rclone/rclone/fs/config/configstruct"
 	"github.com/rclone/rclone/fs/config/obscure"
@@ -29,7 +28,6 @@ import (
 	"github.com/rclone/rclone/fs/fshttp"
 	"github.com/rclone/rclone/fs/hash"
 	"github.com/rclone/rclone/fs/log"
-	"github.com/rclone/rclone/lib/encoder"
 	"github.com/rclone/rclone/lib/oauthutil"
 	"github.com/rclone/rclone/lib/pacer"
 	"github.com/rclone/rclone/lib/rest"
@@ -85,7 +83,7 @@ func init() {
 			opt := new(Options)
 			err := configstruct.Set(m, opt)
 			if err != nil {
-				return nil, fmt.Errorf("couldn't parse config into struct: %w", err)
+				return nil, errors.Wrap(err, "couldn't parse config into struct")
 			}

 			switch config.State {
@@ -132,14 +130,14 @@ you want to read the media.`,
 		}, {
 			Name:     "start_year",
 			Default:  2000,
-			Help:     `Year limits the photos to be downloaded to those which are uploaded after the given year.`,
+			Help:     `Year limits the photos to be downloaded to those which are uploaded after the given year`,
 			Advanced: true,
 		}, {
 			Name:    "include_archived",
 			Default: false,
 			Help: `Also view and download archived media.

-By default, rclone does not request archived media. Thus, when syncing,
+By default rclone does not request archived media. Thus, when syncing,
 archived media is not visible in directory listings or transferred.

 Note that media in albums is always visible and synced, no matter
@@ -151,24 +149,16 @@ listings and transferred.
 Without this flag, archived media will not be visible in directory
 listings and won't be transferred.`,
 			Advanced: true,
-		}, {
-			Name:     config.ConfigEncoding,
-			Help:     config.ConfigEncodingHelp,
-			Advanced: true,
-			Default: (encoder.Base |
-				encoder.EncodeCrLf |
-				encoder.EncodeInvalidUtf8),
 		}}...),
 	})
 }

 // Options defines the configuration for this backend
 type Options struct {
-	ReadOnly        bool                 `config:"read_only"`
-	ReadSize        bool                 `config:"read_size"`
-	StartYear       int                  `config:"start_year"`
-	IncludeArchived bool                 `config:"include_archived"`
-	Enc             encoder.MultiEncoder `config:"encoding"`
+	ReadOnly        bool `config:"read_only"`
+	ReadSize        bool `config:"read_size"`
+	StartYear       int  `config:"start_year"`
+	IncludeArchived bool `config:"include_archived"`
 }

 // Fs represents a remote storage server
@@ -292,7 +282,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	baseClient := fshttp.NewClient(ctx)
 	oAuthClient, ts, err := oauthutil.NewClientWithBaseClient(ctx, name, m, oauthConfig, baseClient)
 	if err != nil {
-		return nil, fmt.Errorf("failed to configure Box: %w", err)
+		return nil, errors.Wrap(err, "failed to configure Box")
 	}

 	root = strings.Trim(path.Clean(root), "/")
@@ -345,13 +335,13 @@ func (f *Fs) fetchEndpoint(ctx context.Context, name string) (endpoint string, e
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return "", fmt.Errorf("couldn't read openID config: %w", err)
+		return "", errors.Wrap(err, "couldn't read openID config")
 	}

 	// Find userinfo endpoint
 	endpoint, ok := openIDconfig[name].(string)
 	if !ok {
-		return "", fmt.Errorf("couldn't find %q from openID config", name)
+		return "", errors.Errorf("couldn't find %q from openID config", name)
 	}

 	return endpoint, nil
@@ -374,7 +364,7 @@ func (f *Fs) UserInfo(ctx context.Context) (userInfo map[string]string, err erro
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't read user info: %w", err)
+		return nil, errors.Wrap(err, "couldn't read user info")
 	}
 	return userInfo, nil
 }
@@ -405,7 +395,7 @@ func (f *Fs) Disconnect(ctx context.Context) (err error) {
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("couldn't revoke token: %w", err)
+		return errors.Wrap(err, "couldn't revoke token")
 	}
 	fs.Infof(f, "res = %+v", res)
 	return nil
@@ -492,7 +482,7 @@ func (f *Fs) listAlbums(ctx context.Context, shared bool) (all *albums, err erro
 			return shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return nil, fmt.Errorf("couldn't list albums: %w", err)
+			return nil, errors.Wrap(err, "couldn't list albums")
 		}
 		newAlbums := result.Albums
 		if shared {
@@ -506,9 +496,7 @@ func (f *Fs) listAlbums(ctx context.Context, shared bool) (all *albums, err erro
 			lastID = newAlbums[len(newAlbums)-1].ID
 		}
 		for i := range newAlbums {
-			anAlbum := newAlbums[i]
-			anAlbum.Title = f.opt.Enc.FromStandardPath(anAlbum.Title)
-			all.add(&anAlbum)
+			all.add(&newAlbums[i])
 		}
 		if result.NextPageToken == "" {
 			break
@@ -549,7 +537,7 @@ func (f *Fs) list(ctx context.Context, filter api.SearchFilter, fn listFn) (err
 			return shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return fmt.Errorf("couldn't list files: %w", err)
+			return errors.Wrap(err, "couldn't list files")
 		}
 		items := result.MediaItems
 		if len(items) > 0 && items[0].ID == lastID {
@@ -693,7 +681,7 @@ func (f *Fs) createAlbum(ctx context.Context, albumTitle string) (album *api.Alb
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return nil, fmt.Errorf("couldn't create album: %w", err)
+		return nil, errors.Wrap(err, "couldn't create album")
 	}
 	f.albums[false].add(&result)
 	return &result, nil
@@ -879,7 +867,7 @@ func (o *Object) readMetaData(ctx context.Context) (err error) {
 			return shouldRetry(ctx, resp, err)
 		})
 		if err != nil {
-			return fmt.Errorf("couldn't get media item: %w", err)
+			return errors.Wrap(err, "couldn't get media item")
 		}
 		o.setMetaData(&item)
 		return nil
@@ -1014,7 +1002,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("couldn't upload file: %w", err)
+		return errors.Wrap(err, "couldn't upload file")
 	}
 	uploadToken := strings.TrimSpace(string(token))
 	if uploadToken == "" {
@@ -1042,14 +1030,14 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("failed to create media item: %w", err)
+		return errors.Wrap(err, "failed to create media item")
 	}
 	if len(result.NewMediaItemResults) != 1 {
 		return errors.New("bad response to BatchCreate wrong number of items")
 	}
 	mediaItemResult := result.NewMediaItemResults[0]
 	if mediaItemResult.Status.Code != 0 {
-		return fmt.Errorf("upload failed: %s (%d)", mediaItemResult.Status.Message, mediaItemResult.Status.Code)
+		return errors.Errorf("upload failed: %s (%d)", mediaItemResult.Status.Message, mediaItemResult.Status.Code)
 	}
 	o.setMetaData(&mediaItemResult.MediaItem)

@@ -1071,7 +1059,7 @@ func (o *Object) Remove(ctx context.Context) (err error) {
 	albumTitle, fileName := match[1], match[2]
 	album, ok := o.fs.albums[false].get(albumTitle)
 	if !ok {
-		return fmt.Errorf("couldn't file %q in album %q for delete", fileName, albumTitle)
+		return errors.Errorf("couldn't file %q in album %q for delete", fileName, albumTitle)
 	}
 	opts := rest.Opts{
 		Method:     "POST",
@@ -1087,7 +1075,7 @@ func (o *Object) Remove(ctx context.Context) (err error) {
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("couldn't delete item from album: %w", err)
+		return errors.Wrap(err, "couldn't delete item from album")
 	}
 	return nil
 }
--- a/backend/googlephotos/pattern.go
+++ b/backend/googlephotos/pattern.go
@@ -11,6 +11,7 @@ import (
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/googlephotos/api"
 	"github.com/rclone/rclone/fs"
 )
@@ -269,7 +270,7 @@ func days(ctx context.Context, f lister, prefix string, match []string) (entries
 	year := match[1]
 	current, err := time.Parse("2006", year)
 	if err != nil {
-		return nil, fmt.Errorf("bad year %q", match[1])
+		return nil, errors.Errorf("bad year %q", match[1])
 	}
 	currentYear := current.Year()
 	for current.Year() == currentYear {
@@ -283,7 +284,7 @@ func days(ctx context.Context, f lister, prefix string, match []string) (entries
 func yearMonthDayFilter(ctx context.Context, f lister, match []string) (sf api.SearchFilter, err error) {
 	year, err := strconv.Atoi(match[1])
 	if err != nil || year < 1000 || year > 3000 {
-		return sf, fmt.Errorf("bad year %q", match[1])
+		return sf, errors.Errorf("bad year %q", match[1])
 	}
 	sf = api.SearchFilter{
 		Filters: &api.Filters{
@@ -299,14 +300,14 @@ func yearMonthDayFilter(ctx context.Context, f lister, match []string) (sf api.S
 	if len(match) >= 3 {
 		month, err := strconv.Atoi(match[2])
 		if err != nil || month < 1 || month > 12 {
-			return sf, fmt.Errorf("bad month %q", match[2])
+			return sf, errors.Errorf("bad month %q", match[2])
 		}
 		sf.Filters.DateFilter.Dates[0].Month = month
 	}
 	if len(match) >= 4 {
 		day, err := strconv.Atoi(match[3])
 		if err != nil || day < 1 || day > 31 {
-			return sf, fmt.Errorf("bad day %q", match[3])
+			return sf, errors.Errorf("bad day %q", match[3])
 		}
 		sf.Filters.DateFilter.Dates[0].Day = day
 	}
--- a/backend/hasher/commands.go
+++ b/backend/hasher/commands.go
@@ -1,180 +0,0 @@
-package hasher
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"path"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/accounting"
-	"github.com/rclone/rclone/fs/cache"
-	"github.com/rclone/rclone/fs/fspath"
-	"github.com/rclone/rclone/fs/hash"
-	"github.com/rclone/rclone/fs/operations"
-	"github.com/rclone/rclone/lib/kv"
-)
-
-// Command the backend to run a named command
-//
-// The command run is name
-// args may be used to read arguments from
-// opts may be used to read optional arguments from
-//
-// The result should be capable of being JSON encoded
-// If it is a string or a []string it will be shown to the user
-// otherwise it will be JSON encoded and shown to the user like that
-func (f *Fs) Command(ctx context.Context, name string, arg []string, opt map[string]string) (out interface{}, err error) {
-	switch name {
-	case "drop":
-		return nil, f.db.Stop(true)
-	case "dump", "fulldump":
-		return nil, f.dbDump(ctx, name == "fulldump", "")
-	case "import", "stickyimport":
-		sticky := name == "stickyimport"
-		if len(arg) != 2 {
-			return nil, errors.New("please provide checksum type and path to sum file")
-		}
-		return nil, f.dbImport(ctx, arg[0], arg[1], sticky)
-	default:
-		return nil, fs.ErrorCommandNotFound
-	}
-}
-
-var commandHelp = []fs.CommandHelp{{
-	Name:  "drop",
-	Short: "Drop cache",
-	Long: `Completely drop checksum cache.
-Usage Example:
-    rclone backend drop hasher:
-`,
-}, {
-	Name:  "dump",
-	Short: "Dump the database",
-	Long:  "Dump cache records covered by the current remote",
-}, {
-	Name:  "fulldump",
-	Short: "Full dump of the database",
-	Long:  "Dump all cache records in the database",
-}, {
-	Name:  "import",
-	Short: "Import a SUM file",
-	Long: `Amend hash cache from a SUM file and bind checksums to files by size/time.
-Usage Example:
-    rclone backend import hasher:subdir md5 /path/to/sum.md5
-`,
-}, {
-	Name:  "stickyimport",
-	Short: "Perform fast import of a SUM file",
-	Long: `Fill hash cache from a SUM file without verifying file fingerprints.
-Usage Example:
-    rclone backend stickyimport hasher:subdir md5 remote:path/to/sum.md5
-`,
-}}
-
-func (f *Fs) dbDump(ctx context.Context, full bool, root string) error {
-	if root == "" {
-		remoteFs, err := cache.Get(ctx, f.opt.Remote)
-		if err != nil {
-			return err
-		}
-		root = fspath.JoinRootPath(remoteFs.Root(), f.Root())
-	}
-	op := &kvDump{
-		full: full,
-		root: root,
-		path: f.db.Path(),
-		fs:   f,
-	}
-	err := f.db.Do(false, op)
-	if err == kv.ErrEmpty {
-		fs.Infof(op.path, "empty")
-		err = nil
-	}
-	return err
-}
-
-func (f *Fs) dbImport(ctx context.Context, hashName, sumRemote string, sticky bool) error {
-	var hashType hash.Type
-	if err := hashType.Set(hashName); err != nil {
-		return err
-	}
-	if hashType == hash.None {
-		return errors.New("please provide a valid hash type")
-	}
-	if !f.suppHashes.Contains(hashType) {
-		return errors.New("unsupported hash type")
-	}
-	if !f.keepHashes.Contains(hashType) {
-		fs.Infof(nil, "Need not import hashes of this type")
-		return nil
-	}
-
-	_, sumPath, err := fspath.SplitFs(sumRemote)
-	if err != nil {
-		return err
-	}
-	sumFs, err := cache.Get(ctx, sumRemote)
-	switch err {
-	case fs.ErrorIsFile:
-		// ok
-	case nil:
-		return fmt.Errorf("not a file: %s", sumRemote)
-	default:
-		return err
-	}
-
-	sumObj, err := sumFs.NewObject(ctx, path.Base(sumPath))
-	if err != nil {
-		return fmt.Errorf("cannot open sum file: %w", err)
-	}
-	hashes, err := operations.ParseSumFile(ctx, sumObj)
-	if err != nil {
-		return fmt.Errorf("failed to parse sum file: %w", err)
-	}
-
-	if sticky {
-		rootPath := f.Fs.Root()
-		for remote, hashVal := range hashes {
-			key := path.Join(rootPath, remote)
-			hashSums := operations.HashSums{hashName: hashVal}
-			if err := f.putRawHashes(ctx, key, anyFingerprint, hashSums); err != nil {
-				fs.Errorf(nil, "%s: failed to import: %v", remote, err)
-			}
-		}
-		fs.Infof(nil, "Summary: %d checksum(s) imported", len(hashes))
-		return nil
-	}
-
-	const longImportThreshold = 100
-	if len(hashes) > longImportThreshold {
-		fs.Infof(nil, "Importing %d checksums. Please wait...", len(hashes))
-	}
-
-	doneCount := 0
-	err = operations.ListFn(ctx, f, func(obj fs.Object) {
-		remote := obj.Remote()
-		hash := hashes[remote]
-		hashes[remote] = "" // mark as handled
-		o, ok := obj.(*Object)
-		if ok && hash != "" {
-			if err := o.putHashes(ctx, hashMap{hashType: hash}); err != nil {
-				fs.Errorf(nil, "%s: failed to import: %v", remote, err)
-			}
-			accounting.Stats(ctx).NewCheckingTransfer(obj).Done(ctx, err)
-			doneCount++
-		}
-	})
-	if err != nil {
-		fs.Errorf(nil, "Import failed: %v", err)
-	}
-	skipCount := 0
-	for remote, emptyOrDone := range hashes {
-		if emptyOrDone != "" {
-			fs.Infof(nil, "Skip vanished object: %s", remote)
-			skipCount++
-		}
-	}
-	fs.Infof(nil, "Summary: %d imported, %d skipped", doneCount, skipCount)
-	return err
-}
--- a/backend/hasher/hasher.go
+++ b/backend/hasher/hasher.go
@@ -1,508 +0,0 @@
-// Package hasher implements a checksum handling overlay backend
-package hasher
-
-import (
-	"context"
-	"encoding/gob"
-	"errors"
-	"fmt"
-	"io"
-	"path"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/cache"
-	"github.com/rclone/rclone/fs/config/configmap"
-	"github.com/rclone/rclone/fs/config/configstruct"
-	"github.com/rclone/rclone/fs/fspath"
-	"github.com/rclone/rclone/fs/hash"
-	"github.com/rclone/rclone/lib/kv"
-)
-
-// Register with Fs
-func init() {
-	fs.Register(&fs.RegInfo{
-		Name:        "hasher",
-		Description: "Better checksums for other remotes",
-		NewFs:       NewFs,
-		CommandHelp: commandHelp,
-		Options: []fs.Option{{
-			Name:     "remote",
-			Required: true,
-			Help:     "Remote to cache checksums for (e.g. myRemote:path).",
-		}, {
-			Name:     "hashes",
-			Default:  fs.CommaSepList{"md5", "sha1"},
-			Advanced: false,
-			Help:     "Comma separated list of supported checksum types.",
-		}, {
-			Name:     "max_age",
-			Advanced: false,
-			Default:  fs.DurationOff,
-			Help:     "Maximum time to keep checksums in cache (0 = no cache, off = cache forever).",
-		}, {
-			Name:     "auto_size",
-			Advanced: true,
-			Default:  fs.SizeSuffix(0),
-			Help:     "Auto-update checksum for files smaller than this size (disabled by default).",
-		}},
-	})
-}
-
-// Options defines the configuration for this backend
-type Options struct {
-	Remote   string          `config:"remote"`
-	Hashes   fs.CommaSepList `config:"hashes"`
-	AutoSize fs.SizeSuffix   `config:"auto_size"`
-	MaxAge   fs.Duration     `config:"max_age"`
-}
-
-// Fs represents a wrapped fs.Fs
-type Fs struct {
-	fs.Fs
-	name     string
-	root     string
-	wrapper  fs.Fs
-	features *fs.Features
-	opt      *Options
-	db       *kv.DB
-	// fingerprinting
-	fpTime bool      // true if using time in fingerprints
-	fpHash hash.Type // hash type to use in fingerprints or None
-	// hash types triaged by groups
-	suppHashes hash.Set // all supported checksum types
-	passHashes hash.Set // passed directly to the base without caching
-	slowHashes hash.Set // passed to the base and then cached
-	autoHashes hash.Set // calculated in-house and cached
-	keepHashes hash.Set // checksums to keep in cache (slow + auto)
-}
-
-var warnExperimental sync.Once
-
-// NewFs constructs an Fs from the remote:path string
-func NewFs(ctx context.Context, fsname, rpath string, cmap configmap.Mapper) (fs.Fs, error) {
-	if !kv.Supported() {
-		return nil, errors.New("hasher is not supported on this OS")
-	}
-	warnExperimental.Do(func() {
-		fs.Infof(nil, "Hasher is EXPERIMENTAL!")
-	})
-
-	opt := &Options{}
-	err := configstruct.Set(cmap, opt)
-	if err != nil {
-		return nil, err
-	}
-
-	if strings.HasPrefix(opt.Remote, fsname+":") {
-		return nil, errors.New("can't point remote at itself")
-	}
-	remotePath := fspath.JoinRootPath(opt.Remote, rpath)
-	baseFs, err := cache.Get(ctx, remotePath)
-	if err != nil && err != fs.ErrorIsFile {
-		return nil, fmt.Errorf("failed to derive base remote %q: %w", opt.Remote, err)
-	}
-
-	f := &Fs{
-		Fs:   baseFs,
-		name: fsname,
-		root: rpath,
-		opt:  opt,
-	}
-	baseFeatures := baseFs.Features()
-	f.fpTime = baseFs.Precision() != fs.ModTimeNotSupported
-
-	if baseFeatures.SlowHash {
-		f.slowHashes = f.Fs.Hashes()
-	} else {
-		f.passHashes = f.Fs.Hashes()
-		f.fpHash = f.passHashes.GetOne()
-	}
-
-	f.suppHashes = f.passHashes
-	f.suppHashes.Add(f.slowHashes.Array()...)
-
-	for _, hashName := range opt.Hashes {
-		var ht hash.Type
-		if err := ht.Set(hashName); err != nil {
-			return nil, fmt.Errorf("invalid token %q in hash string %q", hashName, opt.Hashes.String())
-		}
-		if !f.slowHashes.Contains(ht) {
-			f.autoHashes.Add(ht)
-		}
-		f.keepHashes.Add(ht)
-		f.suppHashes.Add(ht)
-	}
-
-	fs.Debugf(f, "Groups by usage: cached %s, passed %s, auto %s, slow %s, supported %s",
-		f.keepHashes, f.passHashes, f.autoHashes, f.slowHashes, f.suppHashes)
-
-	var nilSet hash.Set
-	if f.keepHashes == nilSet {
-		return nil, errors.New("configured hash_names have nothing to keep in cache")
-	}
-
-	if f.opt.MaxAge > 0 {
-		gob.Register(hashRecord{})
-		db, err := kv.Start(ctx, "hasher", f.Fs)
-		if err != nil {
-			return nil, err
-		}
-		f.db = db
-	}
-
-	stubFeatures := &fs.Features{
-		CanHaveEmptyDirectories: true,
-		IsLocal:                 true,
-		ReadMimeType:            true,
-		WriteMimeType:           true,
-	}
-	f.features = stubFeatures.Fill(ctx, f).Mask(ctx, f.Fs).WrapsFs(f, f.Fs)
-
-	cache.PinUntilFinalized(f.Fs, f)
-	return f, err
-}
-
-//
-// Filesystem
-//
-
-// Name of the remote (as passed into NewFs)
-func (f *Fs) Name() string { return f.name }
-
-// Root of the remote (as passed into NewFs)
-func (f *Fs) Root() string { return f.root }
-
-// Features returns the optional features of this Fs
-func (f *Fs) Features() *fs.Features { return f.features }
-
-// Hashes returns the supported hash sets.
-func (f *Fs) Hashes() hash.Set { return f.suppHashes }
-
-// String returns a description of the FS
-// The "hasher::" prefix is a distinctive feature.
-func (f *Fs) String() string {
-	return fmt.Sprintf("hasher::%s:%s", f.name, f.root)
-}
-
-// UnWrap returns the Fs that this Fs is wrapping
-func (f *Fs) UnWrap() fs.Fs { return f.Fs }
-
-// WrapFs returns the Fs that is wrapping this Fs
-func (f *Fs) WrapFs() fs.Fs { return f.wrapper }
-
-// SetWrapper sets the Fs that is wrapping this Fs
-func (f *Fs) SetWrapper(wrapper fs.Fs) { f.wrapper = wrapper }
-
-// Wrap base entries into hasher entries.
-func (f *Fs) wrapEntries(baseEntries fs.DirEntries) (hashEntries fs.DirEntries, err error) {
-	hashEntries = baseEntries[:0] // work inplace
-	for _, entry := range baseEntries {
-		switch x := entry.(type) {
-		case fs.Object:
-			hashEntries = append(hashEntries, f.wrapObject(x, nil))
-		default:
-			hashEntries = append(hashEntries, entry) // trash in - trash out
-		}
-	}
-	return hashEntries, nil
-}
-
-// List the objects and directories in dir into entries.
-func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err error) {
-	if entries, err = f.Fs.List(ctx, dir); err != nil {
-		return nil, err
-	}
-	return f.wrapEntries(entries)
-}
-
-// ListR lists the objects and directories recursively into out.
-func (f *Fs) ListR(ctx context.Context, dir string, callback fs.ListRCallback) (err error) {
-	return f.Fs.Features().ListR(ctx, dir, func(baseEntries fs.DirEntries) error {
-		hashEntries, err := f.wrapEntries(baseEntries)
-		if err != nil {
-			return err
-		}
-		return callback(hashEntries)
-	})
-}
-
-// Purge a directory
-func (f *Fs) Purge(ctx context.Context, dir string) error {
-	if do := f.Fs.Features().Purge; do != nil {
-		if err := do(ctx, dir); err != nil {
-			return err
-		}
-		err := f.db.Do(true, &kvPurge{
-			dir: path.Join(f.Fs.Root(), dir),
-		})
-		if err != nil {
-			fs.Errorf(f, "Failed to purge some hashes: %v", err)
-		}
-		return nil
-	}
-	return fs.ErrorCantPurge
-}
-
-// PutStream uploads to the remote path with undeterminate size.
-func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
-	if do := f.Fs.Features().PutStream; do != nil {
-		_ = f.pruneHash(src.Remote())
-		oResult, err := do(ctx, in, src, options...)
-		return f.wrapObject(oResult, err), err
-	}
-	return nil, errors.New("PutStream not supported")
-}
-
-// PutUnchecked uploads the object, allowing duplicates.
-func (f *Fs) PutUnchecked(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
-	if do := f.Fs.Features().PutUnchecked; do != nil {
-		_ = f.pruneHash(src.Remote())
-		oResult, err := do(ctx, in, src, options...)
-		return f.wrapObject(oResult, err), err
-	}
-	return nil, errors.New("PutUnchecked not supported")
-}
-
-// pruneHash deletes hash for a path
-func (f *Fs) pruneHash(remote string) error {
-	return f.db.Do(true, &kvPrune{
-		key: path.Join(f.Fs.Root(), remote),
-	})
-}
-
-// CleanUp the trash in the Fs
-func (f *Fs) CleanUp(ctx context.Context) error {
-	if do := f.Fs.Features().CleanUp; do != nil {
-		return do(ctx)
-	}
-	return errors.New("CleanUp not supported")
-}
-
-// About gets quota information from the Fs
-func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
-	if do := f.Fs.Features().About; do != nil {
-		return do(ctx)
-	}
-	return nil, errors.New("About not supported")
-}
-
-// ChangeNotify calls the passed function with a path that has had changes.
-func (f *Fs) ChangeNotify(ctx context.Context, notifyFunc func(string, fs.EntryType), pollIntervalChan <-chan time.Duration) {
-	if do := f.Fs.Features().ChangeNotify; do != nil {
-		do(ctx, notifyFunc, pollIntervalChan)
-	}
-}
-
-// UserInfo returns info about the connected user
-func (f *Fs) UserInfo(ctx context.Context) (map[string]string, error) {
-	if do := f.Fs.Features().UserInfo; do != nil {
-		return do(ctx)
-	}
-	return nil, fs.ErrorNotImplemented
-}
-
-// Disconnect the current user
-func (f *Fs) Disconnect(ctx context.Context) error {
-	if do := f.Fs.Features().Disconnect; do != nil {
-		return do(ctx)
-	}
-	return fs.ErrorNotImplemented
-}
-
-// MergeDirs merges the contents of all the directories passed
-// in into the first one and rmdirs the other directories.
-func (f *Fs) MergeDirs(ctx context.Context, dirs []fs.Directory) error {
-	if do := f.Fs.Features().MergeDirs; do != nil {
-		return do(ctx, dirs)
-	}
-	return errors.New("MergeDirs not supported")
-}
-
-// DirCacheFlush resets the directory cache - used in testing
-// as an optional interface
-func (f *Fs) DirCacheFlush() {
-	if do := f.Fs.Features().DirCacheFlush; do != nil {
-		do()
-	}
-}
-
-// PublicLink generates a public link to the remote path (usually readable by anyone)
-func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration, unlink bool) (string, error) {
-	if do := f.Fs.Features().PublicLink; do != nil {
-		return do(ctx, remote, expire, unlink)
-	}
-	return "", errors.New("PublicLink not supported")
-}
-
-// Copy src to this remote using server-side copy operations.
-func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
-	do := f.Fs.Features().Copy
-	if do == nil {
-		return nil, fs.ErrorCantCopy
-	}
-	o, ok := src.(*Object)
-	if !ok {
-		return nil, fs.ErrorCantCopy
-	}
-	oResult, err := do(ctx, o.Object, remote)
-	return f.wrapObject(oResult, err), err
-}
-
-// Move src to this remote using server-side move operations.
-func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
-	do := f.Fs.Features().Move
-	if do == nil {
-		return nil, fs.ErrorCantMove
-	}
-	o, ok := src.(*Object)
-	if !ok {
-		return nil, fs.ErrorCantMove
-	}
-	oResult, err := do(ctx, o.Object, remote)
-	if err != nil {
-		return nil, err
-	}
-	_ = f.db.Do(true, &kvMove{
-		src: path.Join(f.Fs.Root(), src.Remote()),
-		dst: path.Join(f.Fs.Root(), remote),
-		dir: false,
-		fs:  f,
-	})
-	return f.wrapObject(oResult, nil), nil
-}
-
-// DirMove moves src, srcRemote to this remote at dstRemote using server-side move operations.
-func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string) error {
-	do := f.Fs.Features().DirMove
-	if do == nil {
-		return fs.ErrorCantDirMove
-	}
-	srcFs, ok := src.(*Fs)
-	if !ok {
-		return fs.ErrorCantDirMove
-	}
-	err := do(ctx, srcFs.Fs, srcRemote, dstRemote)
-	if err == nil {
-		_ = f.db.Do(true, &kvMove{
-			src: path.Join(srcFs.Fs.Root(), srcRemote),
-			dst: path.Join(f.Fs.Root(), dstRemote),
-			dir: true,
-			fs:  f,
-		})
-	}
-	return err
-}
-
-// Shutdown the backend, closing any background tasks and any cached connections.
-func (f *Fs) Shutdown(ctx context.Context) (err error) {
-	err = f.db.Stop(false)
-	if do := f.Fs.Features().Shutdown; do != nil {
-		if err2 := do(ctx); err2 != nil {
-			err = err2
-		}
-	}
-	return
-}
-
-// NewObject finds the Object at remote.
-func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
-	o, err := f.Fs.NewObject(ctx, remote)
-	return f.wrapObject(o, err), err
-}
-
-//
-// Object
-//
-
-// Object represents a composite file wrapping one or more data chunks
-type Object struct {
-	fs.Object
-	f *Fs
-}
-
-// Wrap base object into hasher object
-func (f *Fs) wrapObject(o fs.Object, err error) *Object {
-	if err != nil || o == nil {
-		return nil
-	}
-	return &Object{Object: o, f: f}
-}
-
-// Fs returns read only access to the Fs that this object is part of
-func (o *Object) Fs() fs.Info { return o.f }
-
-// UnWrap returns the wrapped Object
-func (o *Object) UnWrap() fs.Object { return o.Object }
-
-// Return a string version
-func (o *Object) String() string {
-	if o == nil {
-		return "<nil>"
-	}
-	return o.Object.String()
-}
-
-// ID returns the ID of the Object if possible
-func (o *Object) ID() string {
-	if doer, ok := o.Object.(fs.IDer); ok {
-		return doer.ID()
-	}
-	return ""
-}
-
-// GetTier returns the Tier of the Object if possible
-func (o *Object) GetTier() string {
-	if doer, ok := o.Object.(fs.GetTierer); ok {
-		return doer.GetTier()
-	}
-	return ""
-}
-
-// SetTier set the Tier of the Object if possible
-func (o *Object) SetTier(tier string) error {
-	if doer, ok := o.Object.(fs.SetTierer); ok {
-		return doer.SetTier(tier)
-	}
-	return errors.New("SetTier not supported")
-}
-
-// MimeType of an Object if known, "" otherwise
-func (o *Object) MimeType(ctx context.Context) string {
-	if doer, ok := o.Object.(fs.MimeTyper); ok {
-		return doer.MimeType(ctx)
-	}
-	return ""
-}
-
-// Check the interfaces are satisfied
-var (
-	_ fs.Fs              = (*Fs)(nil)
-	_ fs.Purger          = (*Fs)(nil)
-	_ fs.Copier          = (*Fs)(nil)
-	_ fs.Mover           = (*Fs)(nil)
-	_ fs.DirMover        = (*Fs)(nil)
-	_ fs.Commander       = (*Fs)(nil)
-	_ fs.PutUncheckeder  = (*Fs)(nil)
-	_ fs.PutStreamer     = (*Fs)(nil)
-	_ fs.CleanUpper      = (*Fs)(nil)
-	_ fs.UnWrapper       = (*Fs)(nil)
-	_ fs.ListRer         = (*Fs)(nil)
-	_ fs.Abouter         = (*Fs)(nil)
-	_ fs.Wrapper         = (*Fs)(nil)
-	_ fs.MergeDirser     = (*Fs)(nil)
-	_ fs.DirCacheFlusher = (*Fs)(nil)
-	_ fs.ChangeNotifier  = (*Fs)(nil)
-	_ fs.PublicLinker    = (*Fs)(nil)
-	_ fs.UserInfoer      = (*Fs)(nil)
-	_ fs.Disconnecter    = (*Fs)(nil)
-	_ fs.Shutdowner      = (*Fs)(nil)
-	_ fs.Object          = (*Object)(nil)
-	_ fs.ObjectUnWrapper = (*Object)(nil)
-	_ fs.IDer            = (*Object)(nil)
-	_ fs.SetTierer       = (*Object)(nil)
-	_ fs.GetTierer       = (*Object)(nil)
-	_ fs.MimeTyper       = (*Object)(nil)
-)
--- a/backend/hasher/hasher_internal_test.go
+++ b/backend/hasher/hasher_internal_test.go
@@ -1,78 +0,0 @@
-package hasher
-
-import (
-	"context"
-	"fmt"
-	"os"
-	"testing"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/config/obscure"
-	"github.com/rclone/rclone/fs/operations"
-	"github.com/rclone/rclone/fstest"
-	"github.com/rclone/rclone/fstest/fstests"
-	"github.com/rclone/rclone/lib/kv"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func putFile(ctx context.Context, t *testing.T, f fs.Fs, name, data string) fs.Object {
-	mtime1 := fstest.Time("2001-02-03T04:05:06.499999999Z")
-	item := fstest.Item{Path: name, ModTime: mtime1}
-	_, o := fstests.PutTestContents(ctx, t, f, &item, data, true)
-	require.NotNil(t, o)
-	return o
-}
-
-func (f *Fs) testUploadFromCrypt(t *testing.T) {
-	// make a temporary local remote
-	tempRoot, err := fstest.LocalRemote()
-	require.NoError(t, err)
-	defer func() {
-		_ = os.RemoveAll(tempRoot)
-	}()
-
-	// make a temporary crypt remote
-	ctx := context.Background()
-	pass := obscure.MustObscure("crypt")
-	remote := fmt.Sprintf(":crypt,remote=%s,password=%s:", tempRoot, pass)
-	cryptFs, err := fs.NewFs(ctx, remote)
-	require.NoError(t, err)
-
-	// make a test file on the crypt remote
-	const dirName = "from_crypt_1"
-	const fileName = dirName + "/file_from_crypt_1"
-	const longTime = fs.ModTimeNotSupported
-	src := putFile(ctx, t, cryptFs, fileName, "doggy froggy")
-
-	// ensure that hash does not exist yet
-	_ = f.pruneHash(fileName)
-	hashType := f.keepHashes.GetOne()
-	hash, err := f.getRawHash(ctx, hashType, fileName, anyFingerprint, longTime)
-	assert.Error(t, err)
-	assert.Empty(t, hash)
-
-	// upload file to hasher
-	in, err := src.Open(ctx)
-	require.NoError(t, err)
-	dst, err := f.Put(ctx, in, src)
-	require.NoError(t, err)
-	assert.NotNil(t, dst)
-
-	// check that hash was created
-	hash, err = f.getRawHash(ctx, hashType, fileName, anyFingerprint, longTime)
-	assert.NoError(t, err)
-	assert.NotEmpty(t, hash)
-	//t.Logf("hash is %q", hash)
-	_ = operations.Purge(ctx, f, dirName)
-}
-
-// InternalTest dispatches all internal tests
-func (f *Fs) InternalTest(t *testing.T) {
-	if !kv.Supported() {
-		t.Skip("hasher is not supported on this OS")
-	}
-	t.Run("UploadFromCrypt", f.testUploadFromCrypt)
-}
-
-var _ fstests.InternalTester = (*Fs)(nil)
--- a/backend/hasher/hasher_test.go
+++ b/backend/hasher/hasher_test.go
@@ -1,38 +0,0 @@
-package hasher_test
-
-import (
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/rclone/rclone/backend/hasher"
-	"github.com/rclone/rclone/fstest"
-	"github.com/rclone/rclone/fstest/fstests"
-	"github.com/rclone/rclone/lib/kv"
-
-	_ "github.com/rclone/rclone/backend/all" // for integration tests
-)
-
-// TestIntegration runs integration tests against the remote
-func TestIntegration(t *testing.T) {
-	if !kv.Supported() {
-		t.Skip("hasher is not supported on this OS")
-	}
-	opt := fstests.Opt{
-		RemoteName: *fstest.RemoteName,
-		NilObject:  (*hasher.Object)(nil),
-		UnimplementableFsMethods: []string{
-			"OpenWriterAt",
-		},
-		UnimplementableObjectMethods: []string{},
-	}
-	if *fstest.RemoteName == "" {
-		tempDir := filepath.Join(os.TempDir(), "rclone-hasher-test")
-		opt.ExtraConfig = []fstests.ExtraConfigItem{
-			{Name: "TestHasher", Key: "type", Value: "hasher"},
-			{Name: "TestHasher", Key: "remote", Value: tempDir},
-		}
-		opt.RemoteName = "TestHasher:"
-	}
-	fstests.Run(t, &opt)
-}
--- a/backend/hasher/kv.go
+++ b/backend/hasher/kv.go
@@ -1,315 +0,0 @@
-package hasher
-
-import (
-	"bytes"
-	"context"
-	"encoding/gob"
-	"errors"
-	"fmt"
-	"strings"
-	"time"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/hash"
-	"github.com/rclone/rclone/fs/operations"
-	"github.com/rclone/rclone/lib/kv"
-)
-
-const (
-	timeFormat     = "2006-01-02T15:04:05.000000000-0700"
-	anyFingerprint = "*"
-)
-
-type hashMap map[hash.Type]string
-
-type hashRecord struct {
-	Fp      string // fingerprint
-	Hashes  operations.HashSums
-	Created time.Time
-}
-
-func (r *hashRecord) encode(key string) ([]byte, error) {
-	var buf bytes.Buffer
-	if err := gob.NewEncoder(&buf).Encode(r); err != nil {
-		fs.Debugf(key, "hasher encoding %v: %v", r, err)
-		return nil, err
-	}
-	return buf.Bytes(), nil
-}
-
-func (r *hashRecord) decode(key string, data []byte) error {
-	if err := gob.NewDecoder(bytes.NewBuffer(data)).Decode(r); err != nil {
-		fs.Debugf(key, "hasher decoding %q failed: %v", data, err)
-		return err
-	}
-	return nil
-}
-
-// kvPrune: prune a single hash
-type kvPrune struct {
-	key string
-}
-
-func (op *kvPrune) Do(ctx context.Context, b kv.Bucket) error {
-	return b.Delete([]byte(op.key))
-}
-
-// kvPurge: delete a subtree
-type kvPurge struct {
-	dir string
-}
-
-func (op *kvPurge) Do(ctx context.Context, b kv.Bucket) error {
-	dir := op.dir
-	if !strings.HasSuffix(dir, "/") {
-		dir += "/"
-	}
-	var items []string
-	cur := b.Cursor()
-	bkey, _ := cur.Seek([]byte(dir))
-	for bkey != nil {
-		key := string(bkey)
-		if !strings.HasPrefix(key, dir) {
-			break
-		}
-		items = append(items, key[len(dir):])
-		bkey, _ = cur.Next()
-	}
-	nerr := 0
-	for _, sub := range items {
-		if err := b.Delete([]byte(dir + sub)); err != nil {
-			nerr++
-		}
-	}
-	fs.Debugf(dir, "%d hashes purged, %d failed", len(items)-nerr, nerr)
-	return nil
-}
-
-// kvMove: assign hashes to new path
-type kvMove struct {
-	src string
-	dst string
-	dir bool
-	fs  *Fs
-}
-
-func (op *kvMove) Do(ctx context.Context, b kv.Bucket) error {
-	src, dst := op.src, op.dst
-	if !op.dir {
-		err := moveHash(b, src, dst)
-		fs.Debugf(op.fs, "moving cached hash %s to %s (err: %v)", src, dst, err)
-		return err
-	}
-
-	if !strings.HasSuffix(src, "/") {
-		src += "/"
-	}
-	if !strings.HasSuffix(dst, "/") {
-		dst += "/"
-	}
-
-	var items []string
-	cur := b.Cursor()
-	bkey, _ := cur.Seek([]byte(src))
-	for bkey != nil {
-		key := string(bkey)
-		if !strings.HasPrefix(key, src) {
-			break
-		}
-		items = append(items, key[len(src):])
-		bkey, _ = cur.Next()
-	}
-
-	nerr := 0
-	for _, suffix := range items {
-		srcKey, dstKey := src+suffix, dst+suffix
-		err := moveHash(b, srcKey, dstKey)
-		fs.Debugf(op.fs, "Rename cache record %s -> %s (err: %v)", srcKey, dstKey, err)
-		if err != nil {
-			nerr++
-		}
-	}
-	fs.Debugf(op.fs, "%d hashes moved, %d failed", len(items)-nerr, nerr)
-	return nil
-}
-
-func moveHash(b kv.Bucket, src, dst string) error {
-	data := b.Get([]byte(src))
-	err := b.Delete([]byte(src))
-	if err != nil || len(data) == 0 {
-		return err
-	}
-	return b.Put([]byte(dst), data)
-}
-
-// kvGet: get single hash from database
-type kvGet struct {
-	key  string
-	fp   string
-	hash string
-	val  string
-	age  time.Duration
-}
-
-func (op *kvGet) Do(ctx context.Context, b kv.Bucket) error {
-	data := b.Get([]byte(op.key))
-	if len(data) == 0 {
-		return errors.New("no record")
-	}
-	var r hashRecord
-	if err := r.decode(op.key, data); err != nil {
-		return errors.New("invalid record")
-	}
-	if !(r.Fp == anyFingerprint || op.fp == anyFingerprint || r.Fp == op.fp) {
-		return errors.New("fingerprint changed")
-	}
-	if time.Since(r.Created) > op.age {
-		return errors.New("record timed out")
-	}
-	if r.Hashes != nil {
-		op.val = r.Hashes[op.hash]
-	}
-	return nil
-}
-
-// kvPut: set hashes for an object by key
-type kvPut struct {
-	key    string
-	fp     string
-	hashes operations.HashSums
-	age    time.Duration
-}
-
-func (op *kvPut) Do(ctx context.Context, b kv.Bucket) (err error) {
-	data := b.Get([]byte(op.key))
-	var r hashRecord
-	if len(data) > 0 {
-		err = r.decode(op.key, data)
-		if err != nil || r.Fp != op.fp || time.Since(r.Created) > op.age {
-			r.Hashes = nil
-		}
-	}
-	if len(r.Hashes) == 0 {
-		r.Created = time.Now()
-		r.Hashes = operations.HashSums{}
-		r.Fp = op.fp
-	}
-
-	for hashType, hashVal := range op.hashes {
-		r.Hashes[hashType] = hashVal
-	}
-	if data, err = r.encode(op.key); err != nil {
-		return fmt.Errorf("marshal failed: %w", err)
-	}
-	if err = b.Put([]byte(op.key), data); err != nil {
-		return fmt.Errorf("put failed: %w", err)
-	}
-	return err
-}
-
-// kvDump: dump the database.
-// Note: long dump can cause concurrent operations to fail.
-type kvDump struct {
-	full  bool
-	root  string
-	path  string
-	fs    *Fs
-	num   int
-	total int
-}
-
-func (op *kvDump) Do(ctx context.Context, b kv.Bucket) error {
-	f, baseRoot, dbPath := op.fs, op.root, op.path
-
-	if op.full {
-		total := 0
-		num := 0
-		_ = b.ForEach(func(bkey, data []byte) error {
-			total++
-			key := string(bkey)
-			include := (baseRoot == "" || key == baseRoot || strings.HasPrefix(key, baseRoot+"/"))
-			var r hashRecord
-			if err := r.decode(key, data); err != nil {
-				fs.Errorf(nil, "%s: invalid record: %v", key, err)
-				return nil
-			}
-			fmt.Println(f.dumpLine(&r, key, include, nil))
-			if include {
-				num++
-			}
-			return nil
-		})
-		fs.Infof(dbPath, "%d records out of %d", num, total)
-		op.num, op.total = num, total // for unit tests
-		return nil
-	}
-
-	num := 0
-	cur := b.Cursor()
-	var bkey, data []byte
-	if baseRoot != "" {
-		bkey, data = cur.Seek([]byte(baseRoot))
-	} else {
-		bkey, data = cur.First()
-	}
-	for bkey != nil {
-		key := string(bkey)
-		if !(baseRoot == "" || key == baseRoot || strings.HasPrefix(key, baseRoot+"/")) {
-			break
-		}
-		var r hashRecord
-		if err := r.decode(key, data); err != nil {
-			fs.Errorf(nil, "%s: invalid record: %v", key, err)
-			continue
-		}
-		if key = strings.TrimPrefix(key[len(baseRoot):], "/"); key == "" {
-			key = "/"
-		}
-		fmt.Println(f.dumpLine(&r, key, true, nil))
-		num++
-		bkey, data = cur.Next()
-	}
-	fs.Infof(dbPath, "%d records", num)
-	op.num = num // for unit tests
-	return nil
-}
-
-func (f *Fs) dumpLine(r *hashRecord, path string, include bool, err error) string {
-	var status string
-	switch {
-	case !include:
-		status = "ext"
-	case err != nil:
-		status = "bad"
-	case r.Fp == anyFingerprint:
-		status = "stk"
-	default:
-		status = "ok "
-	}
-
-	var hashes []string
-	for _, hashType := range f.keepHashes.Array() {
-		hashName := hashType.String()
-		hashVal := r.Hashes[hashName]
-		if hashVal == "" || err != nil {
-			hashVal = "-"
-		}
-		hashVal = fmt.Sprintf("%-*s", hash.Width(hashType, false), hashVal)
-		hashes = append(hashes, hashName+":"+hashVal)
-	}
-	hashesStr := strings.Join(hashes, " ")
-
-	age := time.Since(r.Created).Round(time.Second)
-	if age > 24*time.Hour {
-		age = age.Round(time.Hour)
-	}
-	if err != nil {
-		age = 0
-	}
-	ageStr := age.String()
-	if strings.HasSuffix(ageStr, "h0m0s") {
-		ageStr = strings.TrimSuffix(ageStr, "0m0s")
-	}
-
-	return fmt.Sprintf("%s %s %9s %s", status, hashesStr, ageStr, path)
-}
--- a/backend/hasher/object.go
+++ b/backend/hasher/object.go
@@ -1,305 +0,0 @@
-package hasher
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"path"
-	"time"
-
-	"github.com/rclone/rclone/fs"
-	"github.com/rclone/rclone/fs/hash"
-	"github.com/rclone/rclone/fs/operations"
-)
-
-// obtain hash for an object
-func (o *Object) getHash(ctx context.Context, hashType hash.Type) (string, error) {
-	maxAge := time.Duration(o.f.opt.MaxAge)
-	if maxAge <= 0 {
-		return "", nil
-	}
-	fp := o.fingerprint(ctx)
-	if fp == "" {
-		return "", errors.New("fingerprint failed")
-	}
-	return o.f.getRawHash(ctx, hashType, o.Remote(), fp, maxAge)
-}
-
-// obtain hash for a path
-func (f *Fs) getRawHash(ctx context.Context, hashType hash.Type, remote, fp string, age time.Duration) (string, error) {
-	key := path.Join(f.Fs.Root(), remote)
-	op := &kvGet{
-		key:  key,
-		fp:   fp,
-		hash: hashType.String(),
-		age:  age,
-	}
-	err := f.db.Do(false, op)
-	return op.val, err
-}
-
-// put new hashes for an object
-func (o *Object) putHashes(ctx context.Context, rawHashes hashMap) error {
-	if o.f.opt.MaxAge <= 0 {
-		return nil
-	}
-	fp := o.fingerprint(ctx)
-	if fp == "" {
-		return nil
-	}
-	key := path.Join(o.f.Fs.Root(), o.Remote())
-	hashes := operations.HashSums{}
-	for hashType, hashVal := range rawHashes {
-		hashes[hashType.String()] = hashVal
-	}
-	return o.f.putRawHashes(ctx, key, fp, hashes)
-}
-
-// set hashes for a path without any validation
-func (f *Fs) putRawHashes(ctx context.Context, key, fp string, hashes operations.HashSums) error {
-	return f.db.Do(true, &kvPut{
-		key:    key,
-		fp:     fp,
-		hashes: hashes,
-		age:    time.Duration(f.opt.MaxAge),
-	})
-}
-
-// Hash returns the selected checksum of the file or "" if unavailable.
-func (o *Object) Hash(ctx context.Context, hashType hash.Type) (hashVal string, err error) {
-	f := o.f
-	if f.passHashes.Contains(hashType) {
-		fs.Debugf(o, "pass %s", hashType)
-		return o.Object.Hash(ctx, hashType)
-	}
-	if !f.suppHashes.Contains(hashType) {
-		fs.Debugf(o, "unsupp %s", hashType)
-		return "", hash.ErrUnsupported
-	}
-	if hashVal, err = o.getHash(ctx, hashType); err != nil {
-		fs.Debugf(o, "getHash: %v", err)
-		err = nil
-		hashVal = ""
-	}
-	if hashVal != "" {
-		fs.Debugf(o, "cached %s = %q", hashType, hashVal)
-		return hashVal, nil
-	}
-	if f.slowHashes.Contains(hashType) {
-		fs.Debugf(o, "slow %s", hashType)
-		hashVal, err = o.Object.Hash(ctx, hashType)
-		if err == nil && hashVal != "" && f.keepHashes.Contains(hashType) {
-			if err = o.putHashes(ctx, hashMap{hashType: hashVal}); err != nil {
-				fs.Debugf(o, "putHashes: %v", err)
-				err = nil
-			}
-		}
-		return hashVal, err
-	}
-	if f.autoHashes.Contains(hashType) && o.Size() < int64(f.opt.AutoSize) {
-		_ = o.updateHashes(ctx)
-		if hashVal, err = o.getHash(ctx, hashType); err != nil {
-			fs.Debugf(o, "auto %s = %q (%v)", hashType, hashVal, err)
-			err = nil
-		}
-	}
-	return hashVal, err
-}
-
-// updateHashes performs implicit "rclone hashsum --download" and updates cache.
-func (o *Object) updateHashes(ctx context.Context) error {
-	r, err := o.Open(ctx)
-	if err != nil {
-		fs.Infof(o, "update failed (open): %v", err)
-		return err
-	}
-	defer func() {
-		_ = r.Close()
-	}()
-	if _, err = io.Copy(ioutil.Discard, r); err != nil {
-		fs.Infof(o, "update failed (copy): %v", err)
-		return err
-	}
-	return nil
-}
-
-// Update the object with the given data, time and size.
-func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) error {
-	_ = o.f.pruneHash(src.Remote())
-	return o.Object.Update(ctx, in, src, options...)
-}
-
-// Remove an object.
-func (o *Object) Remove(ctx context.Context) error {
-	_ = o.f.pruneHash(o.Remote())
-	return o.Object.Remove(ctx)
-}
-
-// SetModTime sets the modification time of the file.
-// Also prunes the cache entry when modtime changes so that
-// touching a file will trigger checksum recalculation even
-// on backends that don't provide modTime with fingerprint.
-func (o *Object) SetModTime(ctx context.Context, mtime time.Time) error {
-	if mtime != o.Object.ModTime(ctx) {
-		_ = o.f.pruneHash(o.Remote())
-	}
-	return o.Object.SetModTime(ctx, mtime)
-}
-
-// Open opens the file for read.
-// Full reads will also update object hashes.
-func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (r io.ReadCloser, err error) {
-	size := o.Size()
-	var offset, limit int64 = 0, -1
-	for _, option := range options {
-		switch opt := option.(type) {
-		case *fs.SeekOption:
-			offset = opt.Offset
-		case *fs.RangeOption:
-			offset, limit = opt.Decode(size)
-		}
-	}
-	if offset < 0 {
-		return nil, errors.New("invalid offset")
-	}
-	if limit < 0 {
-		limit = size - offset
-	}
-	if r, err = o.Object.Open(ctx, options...); err != nil {
-		return nil, err
-	}
-	if offset != 0 || limit < size {
-		// It's a partial read
-		return r, err
-	}
-	return o.f.newHashingReader(ctx, r, func(sums hashMap) {
-		if err := o.putHashes(ctx, sums); err != nil {
-			fs.Infof(o, "auto hashing error: %v", err)
-		}
-	})
-}
-
-// Put data into the remote path with given modTime and size
-func (f *Fs) Put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
-	var (
-		o      *Object
-		common hash.Set
-		rehash bool
-		hashes hashMap
-	)
-	if fsrc := src.Fs(); fsrc != nil {
-		common = fsrc.Hashes().Overlap(f.keepHashes)
-		// Rehash if source does not have all required hashes or hashing is slow
-		rehash = fsrc.Features().SlowHash || common != f.keepHashes
-	}
-
-	wrapIn := in
-	if rehash {
-		r, err := f.newHashingReader(ctx, in, func(sums hashMap) {
-			hashes = sums
-		})
-		fs.Debugf(src, "Rehash in-fly due to incomplete or slow source set %v (err: %v)", common, err)
-		if err == nil {
-			wrapIn = r
-		} else {
-			rehash = false
-		}
-	}
-
-	_ = f.pruneHash(src.Remote())
-	oResult, err := f.Fs.Put(ctx, wrapIn, src, options...)
-	o = f.wrapObject(oResult, err)
-	if o == nil {
-		return nil, err
-	}
-
-	if !rehash {
-		hashes = hashMap{}
-		for _, ht := range common.Array() {
-			if h, e := src.Hash(ctx, ht); e == nil && h != "" {
-				hashes[ht] = h
-			}
-		}
-	}
-	if len(hashes) > 0 {
-		err := o.putHashes(ctx, hashes)
-		fs.Debugf(o, "Applied %d source hashes, err: %v", len(hashes), err)
-	}
-	return o, err
-}
-
-type hashingReader struct {
-	rd     io.Reader
-	hasher *hash.MultiHasher
-	fun    func(hashMap)
-}
-
-func (f *Fs) newHashingReader(ctx context.Context, rd io.Reader, fun func(hashMap)) (*hashingReader, error) {
-	hasher, err := hash.NewMultiHasherTypes(f.keepHashes)
-	if err != nil {
-		return nil, err
-	}
-	hr := &hashingReader{
-		rd:     rd,
-		hasher: hasher,
-		fun:    fun,
-	}
-	return hr, nil
-}
-
-func (r *hashingReader) Read(p []byte) (n int, err error) {
-	n, err = r.rd.Read(p)
-	if err != nil && err != io.EOF {
-		r.hasher = nil
-	}
-	if r.hasher != nil {
-		if _, errHash := r.hasher.Write(p[:n]); errHash != nil {
-			r.hasher = nil
-			err = errHash
-		}
-	}
-	if err == io.EOF && r.hasher != nil {
-		r.fun(r.hasher.Sums())
-		r.hasher = nil
-	}
-	return
-}
-
-func (r *hashingReader) Close() error {
-	if rc, ok := r.rd.(io.ReadCloser); ok {
-		return rc.Close()
-	}
-	return nil
-}
-
-// Return object fingerprint or empty string in case of errors
-//
-// Note that we can't use the generic `fs.Fingerprint` here because
-// this fingerprint is used to pick _derived hashes_ that are slow
-// to calculate or completely unsupported by the base remote.
-//
-// The hasher fingerprint must be based on `fsHash`, the first _fast_
-// hash supported _by the underlying remote_ (if there is one),
-// while `fs.Fingerprint` would select a hash _produced by hasher_
-// creating unresolvable fingerprint loop.
-func (o *Object) fingerprint(ctx context.Context) string {
-	size := o.Object.Size()
-	timeStr := "-"
-	if o.f.fpTime {
-		timeStr = o.Object.ModTime(ctx).UTC().Format(timeFormat)
-		if timeStr == "" {
-			return ""
-		}
-	}
-	hashStr := "-"
-	if o.f.fpHash != hash.None {
-		var err error
-		hashStr, err = o.Object.Hash(ctx, o.f.fpHash)
-		if hashStr == "" || err != nil {
-			return ""
-		}
-	}
-	return fmt.Sprintf("%d,%s,%s", size, timeStr, hashStr)
-}
--- a/backend/hdfs/fs.go
+++ b/backend/hdfs/fs.go
@@ -1,4 +1,3 @@
-//go:build !plan9
 // +build !plan9

 package hdfs
@@ -263,98 +262,6 @@ func (f *Fs) Purge(ctx context.Context, dir string) error {
 	return f.client.RemoveAll(realpath)
 }

-// Move src to this remote using server-side move operations.
-//
-// This is stored with the remote path given
-//
-// It returns the destination Object and a possible error
-//
-// Will only be called if src.Fs().Name() == f.Name()
-//
-// If it isn't possible then return fs.ErrorCantMove
-func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
-	srcObj, ok := src.(*Object)
-	if !ok {
-		fs.Debugf(src, "Can't move - not same remote type")
-		return nil, fs.ErrorCantMove
-	}
-
-	// Get the real paths from the remote specs:
-	sourcePath := srcObj.fs.realpath(srcObj.remote)
-	targetPath := f.realpath(remote)
-	fs.Debugf(f, "rename [%s] to [%s]", sourcePath, targetPath)
-
-	// Make sure the target folder exists:
-	dirname := path.Dir(targetPath)
-	err := f.client.MkdirAll(dirname, 0755)
-	if err != nil {
-		return nil, err
-	}
-
-	// Do the move
-	// Note that the underlying HDFS library hard-codes Overwrite=True, but this is expected rclone behaviour.
-	err = f.client.Rename(sourcePath, targetPath)
-	if err != nil {
-		return nil, err
-	}
-
-	// Look up the resulting object
-	info, err := f.client.Stat(targetPath)
-	if err != nil {
-		return nil, err
-	}
-
-	// And return it:
-	return &Object{
-		fs:      f,
-		remote:  remote,
-		size:    info.Size(),
-		modTime: info.ModTime(),
-	}, nil
-}
-
-// DirMove moves src, srcRemote to this remote at dstRemote
-// using server-side move operations.
-//
-// Will only be called if src.Fs().Name() == f.Name()
-//
-// If it isn't possible then return fs.ErrorCantDirMove
-//
-// If destination exists then return fs.ErrorDirExists
-func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string) (err error) {
-	srcFs, ok := src.(*Fs)
-	if !ok {
-		return fs.ErrorCantDirMove
-	}
-
-	// Get the real paths from the remote specs:
-	sourcePath := srcFs.realpath(srcRemote)
-	targetPath := f.realpath(dstRemote)
-	fs.Debugf(f, "rename [%s] to [%s]", sourcePath, targetPath)
-
-	// Check if the destination exists:
-	info, err := f.client.Stat(targetPath)
-	if err == nil {
-		fs.Debugf(f, "target directory already exits, IsDir = [%t]", info.IsDir())
-		return fs.ErrorDirExists
-	}
-
-	// Make sure the targets parent folder exists:
-	dirname := path.Dir(targetPath)
-	err = f.client.MkdirAll(dirname, 0755)
-	if err != nil {
-		return err
-	}
-
-	// Do the move
-	err = f.client.Rename(sourcePath, targetPath)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
 // About gets quota information from the Fs
 func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
 	info, err := f.client.StatFs()
@@ -410,6 +317,4 @@ var (
 	_ fs.Purger      = (*Fs)(nil)
 	_ fs.PutStreamer = (*Fs)(nil)
 	_ fs.Abouter     = (*Fs)(nil)
-	_ fs.Mover       = (*Fs)(nil)
-	_ fs.DirMover    = (*Fs)(nil)
 )
--- a/backend/hdfs/hdfs.go
+++ b/backend/hdfs/hdfs.go
@@ -1,4 +1,3 @@
-//go:build !plan9
 // +build !plan9

 package hdfs
@@ -19,31 +18,41 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "namenode",
-			Help:     "Hadoop name node and port.\n\nE.g. \"namenode:8020\" to connect to host namenode at port 8020.",
+			Help:     "hadoop name node and port",
 			Required: true,
+			Examples: []fs.OptionExample{{
+				Value: "namenode:8020",
+				Help:  "Connect to host namenode at port 8020",
+			}},
 		}, {
-			Name: "username",
-			Help: "Hadoop user name.",
+			Name:     "username",
+			Help:     "hadoop user name",
+			Required: false,
 			Examples: []fs.OptionExample{{
 				Value: "root",
-				Help:  "Connect to hdfs as root.",
+				Help:  "Connect to hdfs as root",
 			}},
 		}, {
 			Name: "service_principal_name",
-			Help: `Kerberos service principal name for the namenode.
+			Help: `Kerberos service principal name for the namenode

 Enables KERBEROS authentication. Specifies the Service Principal Name
-(SERVICE/FQDN) for the namenode. E.g. \"hdfs/namenode.hadoop.docker\"
-for namenode running as service 'hdfs' with FQDN 'namenode.hadoop.docker'.`,
+(SERVICE/FQDN) for the namenode.`,
+			Required: false,
+			Examples: []fs.OptionExample{{
+				Value: "hdfs/namenode.hadoop.docker",
+				Help:  "Namenode running as service 'hdfs' with FQDN 'namenode.hadoop.docker'.",
+			}},
 			Advanced: true,
 		}, {
 			Name: "data_transfer_protection",
-			Help: `Kerberos data transfer protection: authentication|integrity|privacy.
+			Help: `Kerberos data transfer protection: authentication|integrity|privacy

 Specifies whether or not authentication, data signature integrity
 checks, and wire encryption is required when communicating the the
 datanodes. Possible values are 'authentication', 'integrity' and
 'privacy'. Used only with KERBEROS enabled.`,
+			Required: false,
 			Examples: []fs.OptionExample{{
 				Value: "privacy",
 				Help:  "Ensure authentication, integrity and encryption enabled.",
--- a/backend/hdfs/hdfs_test.go
+++ b/backend/hdfs/hdfs_test.go
@@ -1,6 +1,5 @@
 // Test HDFS filesystem interface

-//go:build !plan9
 // +build !plan9

 package hdfs_test
--- a/backend/hdfs/hdfs_unsupported.go
+++ b/backend/hdfs/hdfs_unsupported.go
@@ -1,7 +1,6 @@
 // Build for hdfs for unsupported platforms to stop go complaining
 // about "no buildable Go source files "

-//go:build plan9
 // +build plan9

 package hdfs
--- a/backend/hdfs/object.go
+++ b/backend/hdfs/object.go
@@ -1,4 +1,3 @@
-//go:build !plan9
 // +build !plan9

 package hdfs
--- a/backend/http/http.go
+++ b/backend/http/http.go
@@ -6,8 +6,6 @@ package http

 import (
 	"context"
-	"errors"
-	"fmt"
 	"io"
 	"mime"
 	"net/http"
@@ -18,6 +16,7 @@ import (
 	"sync"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config/configmap"
 	"github.com/rclone/rclone/fs/config/configstruct"
@@ -39,25 +38,33 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "url",
-			Help:     "URL of http host to connect to.\n\nE.g. \"https://example.com\", or \"https://user:pass@example.com\" to use a username and password.",
+			Help:     "URL of http host to connect to",
 			Required: true,
+			Examples: []fs.OptionExample{{
+				Value: "https://example.com",
+				Help:  "Connect to example.com",
+			}, {
+				Value: "https://user:pass@example.com",
+				Help:  "Connect to example.com using a username and password",
+			}},
 		}, {
 			Name: "headers",
-			Help: `Set HTTP headers for all transactions.
+			Help: `Set HTTP headers for all transactions

-Use this to set additional HTTP headers for all transactions.
+Use this to set additional HTTP headers for all transactions

 The input format is comma separated list of key,value pairs.  Standard
 [CSV encoding](https://godoc.org/encoding/csv) may be used.

-For example, to set a Cookie use 'Cookie,name=value', or '"Cookie","name=value"'.
+For example to set a Cookie use 'Cookie,name=value', or '"Cookie","name=value"'.

-You can set multiple headers, e.g. '"Cookie","name=value","Authorization","xxx"'.`,
+You can set multiple headers, e.g. '"Cookie","name=value","Authorization","xxx"'.
+`,
 			Default:  fs.CommaSepList{},
 			Advanced: true,
 		}, {
 			Name: "no_slash",
-			Help: `Set this if the site doesn't end directories with /.
+			Help: `Set this if the site doesn't end directories with /

 Use this if your target website does not use / on the end of
 directories.
@@ -73,9 +80,8 @@ directories.`,
 			Advanced: true,
 		}, {
 			Name: "no_head",
-			Help: `Don't use HEAD requests.
+			Help: `Don't use HEAD requests to find file sizes in dir listing

-HEAD requests are mainly used to find file sizes in dir listing.
 If your site is being very slow to load then you can try this option.
 Normally rclone does a HEAD request for each potential file in a
 directory listing to:
@@ -84,9 +90,12 @@ directory listing to:
 - check it really exists
 - check to see if it is a directory

-If you set this option, rclone will not do the HEAD request. This will mean
-that directory listings are much quicker, but rclone won't have the times or
-sizes of any files, and some files that don't exist may be in the listing.`,
+If you set this option, rclone will not do the HEAD request.  This will mean
+
+- directory listings are much quicker
+- rclone won't have the times or sizes of any files
+- some files that don't exist may be in the listing
+`,
 			Default:  false,
 			Advanced: true,
 		}},
@@ -130,87 +139,11 @@ func statusError(res *http.Response, err error) error {
 	}
 	if res.StatusCode < 200 || res.StatusCode > 299 {
 		_ = res.Body.Close()
-		return fmt.Errorf("HTTP Error: %s", res.Status)
+		return errors.Errorf("HTTP Error %d: %s", res.StatusCode, res.Status)
 	}
 	return nil
 }

-// getFsEndpoint decides if url is to be considered a file or directory,
-// and returns a proper endpoint url to use for the fs.
-func getFsEndpoint(ctx context.Context, client *http.Client, url string, opt *Options) (string, bool) {
-	// If url ends with '/' it is already a proper url always assumed to be a directory.
-	if url[len(url)-1] == '/' {
-		return url, false
-	}
-
-	// If url does not end with '/' we send a HEAD request to decide
-	// if it is directory or file, and if directory appends the missing
-	// '/', or if file returns the directory url to parent instead.
-	createFileResult := func() (string, bool) {
-		fs.Debugf(nil, "If path is a directory you must add a trailing '/'")
-		parent, _ := path.Split(url)
-		return parent, true
-	}
-	createDirResult := func() (string, bool) {
-		fs.Debugf(nil, "To avoid the initial HEAD request add a trailing '/' to the path")
-		return url + "/", false
-	}
-
-	// If HEAD requests are not allowed we just have to assume it is a file.
-	if opt.NoHead {
-		fs.Debugf(nil, "Assuming path is a file as --http-no-head is set")
-		return createFileResult()
-	}
-
-	// Use a client which doesn't follow redirects so the server
-	// doesn't redirect http://host/dir to http://host/dir/
-	noRedir := *client
-	noRedir.CheckRedirect = func(req *http.Request, via []*http.Request) error {
-		return http.ErrUseLastResponse
-	}
-	req, err := http.NewRequestWithContext(ctx, "HEAD", url, nil)
-	if err != nil {
-		fs.Debugf(nil, "Assuming path is a file as HEAD request could not be created: %v", err)
-		return createFileResult()
-	}
-	addHeaders(req, opt)
-	res, err := noRedir.Do(req)
-
-	if err != nil {
-		fs.Debugf(nil, "Assuming path is a file as HEAD request could not be sent: %v", err)
-		return createFileResult()
-	}
-	if res.StatusCode == http.StatusNotFound {
-		fs.Debugf(nil, "Assuming path is a directory as HEAD response is it does not exist as a file (%s)", res.Status)
-		return createDirResult()
-	}
-	if res.StatusCode == http.StatusMovedPermanently ||
-		res.StatusCode == http.StatusFound ||
-		res.StatusCode == http.StatusSeeOther ||
-		res.StatusCode == http.StatusTemporaryRedirect ||
-		res.StatusCode == http.StatusPermanentRedirect {
-		redir := res.Header.Get("Location")
-		if redir != "" {
-			if redir[len(redir)-1] == '/' {
-				fs.Debugf(nil, "Assuming path is a directory as HEAD response is redirect (%s) to a path that ends with '/': %s", res.Status, redir)
-				return createDirResult()
-			}
-			fs.Debugf(nil, "Assuming path is a file as HEAD response is redirect (%s) to a path that does not end with '/': %s", res.Status, redir)
-			return createFileResult()
-		}
-		fs.Debugf(nil, "Assuming path is a file as HEAD response is redirect (%s) but no location header", res.Status)
-		return createFileResult()
-	}
-	if res.StatusCode < 200 || res.StatusCode > 299 {
-		// Example is 403 (http.StatusForbidden) for servers not allowing HEAD requests.
-		fs.Debugf(nil, "Assuming path is a file as HEAD response is an error (%s)", res.Status)
-		return createFileResult()
-	}
-
-	fs.Debugf(nil, "Assuming path is a file as HEAD response is success (%s)", res.Status)
-	return createFileResult()
-}
-
 // NewFs creates a new Fs object from the name and root. It connects to
 // the host specified in the config file.
 func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, error) {
@@ -241,9 +174,37 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e

 	client := fshttp.NewClient(ctx)

-	endpoint, isFile := getFsEndpoint(ctx, client, u.String(), opt)
-	fs.Debugf(nil, "Root: %s", endpoint)
-	u, err = url.Parse(endpoint)
+	var isFile = false
+	if !strings.HasSuffix(u.String(), "/") {
+		// Make a client which doesn't follow redirects so the server
+		// doesn't redirect http://host/dir to http://host/dir/
+		noRedir := *client
+		noRedir.CheckRedirect = func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		}
+		// check to see if points to a file
+		req, err := http.NewRequestWithContext(ctx, "HEAD", u.String(), nil)
+		if err == nil {
+			addHeaders(req, opt)
+			res, err := noRedir.Do(req)
+			err = statusError(res, err)
+			if err == nil {
+				isFile = true
+			}
+		}
+	}
+
+	newRoot := u.String()
+	if isFile {
+		// Point to the parent if this is a file
+		newRoot, _ = path.Split(u.String())
+	} else {
+		if !strings.HasSuffix(newRoot, "/") {
+			newRoot += "/"
+		}
+	}
+
+	u, err = url.Parse(newRoot)
 	if err != nil {
 		return nil, err
 	}
@@ -261,16 +222,12 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	f.features = (&fs.Features{
 		CanHaveEmptyDirectories: true,
 	}).Fill(ctx, f)
-
 	if isFile {
-		// return an error with an fs which points to the parent
 		return f, fs.ErrorIsFile
 	}
-
 	if !strings.HasSuffix(f.endpointURL, "/") {
 		return nil, errors.New("internal error: url doesn't end with /")
 	}
-
 	return f, nil
 }

@@ -346,7 +303,7 @@ func parseName(base *url.URL, name string) (string, error) {
 	}
 	// check it doesn't have URL parameters
 	uStr := u.String()
-	if strings.Contains(uStr, "?") {
+	if strings.Index(uStr, "?") >= 0 {
 		return "", errFoundQuestionMark
 	}
 	// check that this is going back to the same host and scheme
@@ -427,15 +384,15 @@ func (f *Fs) readDir(ctx context.Context, dir string) (names []string, err error
 	URL := f.url(dir)
 	u, err := url.Parse(URL)
 	if err != nil {
-		return nil, fmt.Errorf("failed to readDir: %w", err)
+		return nil, errors.Wrap(err, "failed to readDir")
 	}
 	if !strings.HasSuffix(URL, "/") {
-		return nil, fmt.Errorf("internal error: readDir URL %q didn't end in /", URL)
+		return nil, errors.Errorf("internal error: readDir URL %q didn't end in /", URL)
 	}
 	// Do the request
 	req, err := http.NewRequestWithContext(ctx, "GET", URL, nil)
 	if err != nil {
-		return nil, fmt.Errorf("readDir failed: %w", err)
+		return nil, errors.Wrap(err, "readDir failed")
 	}
 	f.addHeaders(req)
 	res, err := f.httpClient.Do(req)
@@ -447,7 +404,7 @@ func (f *Fs) readDir(ctx context.Context, dir string) (names []string, err error
 	}
 	err = statusError(res, err)
 	if err != nil {
-		return nil, fmt.Errorf("failed to readDir: %w", err)
+		return nil, errors.Wrap(err, "failed to readDir")
 	}

 	contentType := strings.SplitN(res.Header.Get("Content-Type"), ";", 2)[0]
@@ -455,10 +412,10 @@ func (f *Fs) readDir(ctx context.Context, dir string) (names []string, err error
 	case "text/html":
 		names, err = parse(u, res.Body)
 		if err != nil {
-			return nil, fmt.Errorf("readDir: %w", err)
+			return nil, errors.Wrap(err, "readDir")
 		}
 	default:
-		return nil, fmt.Errorf("can't parse content type %q", contentType)
+		return nil, errors.Errorf("Can't parse content type %q", contentType)
 	}
 	return names, nil
 }
@@ -478,7 +435,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 	}
 	names, err := f.readDir(ctx, dir)
 	if err != nil {
-		return nil, fmt.Errorf("error listing %q: %w", dir, err)
+		return nil, errors.Wrapf(err, "error listing %q", dir)
 	}
 	var (
 		entriesMu sync.Mutex // to protect entries
@@ -590,7 +547,7 @@ func (o *Object) stat(ctx context.Context) error {
 	url := o.url()
 	req, err := http.NewRequestWithContext(ctx, "HEAD", url, nil)
 	if err != nil {
-		return fmt.Errorf("stat failed: %w", err)
+		return errors.Wrap(err, "stat failed")
 	}
 	o.fs.addHeaders(req)
 	res, err := o.fs.httpClient.Do(req)
@@ -599,7 +556,7 @@ func (o *Object) stat(ctx context.Context) error {
 	}
 	err = statusError(res, err)
 	if err != nil {
-		return fmt.Errorf("failed to stat: %w", err)
+		return errors.Wrap(err, "failed to stat")
 	}
 	t, err := http.ParseTime(res.Header.Get("Last-Modified"))
 	if err != nil {
@@ -612,7 +569,7 @@ func (o *Object) stat(ctx context.Context) error {
 	if o.fs.opt.NoSlash {
 		mediaType, _, err := mime.ParseMediaType(o.contentType)
 		if err != nil {
-			return fmt.Errorf("failed to parse Content-Type: %q: %w", o.contentType, err)
+			return errors.Wrapf(err, "failed to parse Content-Type: %q", o.contentType)
 		}
 		if mediaType == "text/html" {
 			return fs.ErrorNotAFile
@@ -638,7 +595,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 	url := o.url()
 	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
 	if err != nil {
-		return nil, fmt.Errorf("Open failed: %w", err)
+		return nil, errors.Wrap(err, "Open failed")
 	}

 	// Add optional headers
@@ -651,7 +608,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 	res, err := o.fs.httpClient.Do(req)
 	err = statusError(res, err)
 	if err != nil {
-		return nil, fmt.Errorf("Open failed: %w", err)
+		return nil, errors.Wrap(err, "Open failed")
 	}
 	return res.Body, nil
 }
--- a/backend/http/http_internal_test.go
+++ b/backend/http/http_internal_test.go
@@ -8,10 +8,8 @@ import (
 	"net/http/httptest"
 	"net/url"
 	"os"
-	"path"
 	"path/filepath"
 	"sort"
-	"strconv"
 	"strings"
 	"testing"
 	"time"
@@ -26,11 +24,10 @@ import (
 )

 var (
-	remoteName  = "TestHTTP"
-	testPath    = "test"
-	filesPath   = filepath.Join(testPath, "files")
-	headers     = []string{"X-Potato", "sausage", "X-Rhubarb", "cucumber"}
-	lineEndSize = 1
+	remoteName = "TestHTTP"
+	testPath   = "test"
+	filesPath  = filepath.Join(testPath, "files")
+	headers    = []string{"X-Potato", "sausage", "X-Rhubarb", "cucumber"}
 )

 // prepareServer the test server and return a function to tidy it up afterwards
@@ -38,22 +35,6 @@ func prepareServer(t *testing.T) (configmap.Simple, func()) {
 	// file server for test/files
 	fileServer := http.FileServer(http.Dir(filesPath))

-	// verify the file path is correct, and also check which line endings
-	// are used to get sizes right ("\n" except on Windows, but even there
-	// we may have "\n" or "\r\n" depending on git crlf setting)
-	fileList, err := ioutil.ReadDir(filesPath)
-	require.NoError(t, err)
-	require.Greater(t, len(fileList), 0)
-	for _, file := range fileList {
-		if !file.IsDir() {
-			data, _ := ioutil.ReadFile(filepath.Join(filesPath, file.Name()))
-			if strings.HasSuffix(string(data), "\r\n") {
-				lineEndSize = 2
-			}
-			break
-		}
-	}
-
 	// test the headers are there then pass on to fileServer
 	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		what := fmt.Sprintf("%s %s: Header ", r.Method, r.URL.Path)
@@ -110,7 +91,7 @@ func testListRoot(t *testing.T, f fs.Fs, noSlash bool) {

 	e = entries[1]
 	assert.Equal(t, "one%.txt", e.Remote())
-	assert.Equal(t, int64(5+lineEndSize), e.Size())
+	assert.Equal(t, int64(6), e.Size())
 	_, ok = e.(*Object)
 	assert.True(t, ok)

@@ -127,7 +108,7 @@ func testListRoot(t *testing.T, f fs.Fs, noSlash bool) {
 		_, ok = e.(fs.Directory)
 		assert.True(t, ok)
 	} else {
-		assert.Equal(t, int64(40+lineEndSize), e.Size())
+		assert.Equal(t, int64(41), e.Size())
 		_, ok = e.(*Object)
 		assert.True(t, ok)
 	}
@@ -160,7 +141,7 @@ func TestListSubDir(t *testing.T) {

 	e := entries[0]
 	assert.Equal(t, "three/underthree.txt", e.Remote())
-	assert.Equal(t, int64(8+lineEndSize), e.Size())
+	assert.Equal(t, int64(9), e.Size())
 	_, ok := e.(*Object)
 	assert.True(t, ok)
 }
@@ -173,7 +154,7 @@ func TestNewObject(t *testing.T) {
 	require.NoError(t, err)

 	assert.Equal(t, "four/under four.txt", o.Remote())
-	assert.Equal(t, int64(8+lineEndSize), o.Size())
+	assert.Equal(t, int64(9), o.Size())
 	_, ok := o.(*Object)
 	assert.True(t, ok)

@@ -206,11 +187,7 @@ func TestOpen(t *testing.T) {
 	data, err := ioutil.ReadAll(fd)
 	require.NoError(t, err)
 	require.NoError(t, fd.Close())
-	if lineEndSize == 2 {
-		assert.Equal(t, "beetroot\r\n", string(data))
-	} else {
-		assert.Equal(t, "beetroot\n", string(data))
-	}
+	assert.Equal(t, "beetroot\n", string(data))

 	// Test with range request
 	fd, err = o.Open(context.Background(), &fs.RangeOption{Start: 1, End: 5})
@@ -259,7 +236,7 @@ func TestIsAFileSubDir(t *testing.T) {

 	e := entries[0]
 	assert.Equal(t, "underthree.txt", e.Remote())
-	assert.Equal(t, int64(8+lineEndSize), e.Size())
+	assert.Equal(t, int64(9), e.Size())
 	_, ok := e.(*Object)
 	assert.True(t, ok)
 }
@@ -376,106 +353,3 @@ func TestParseCaddy(t *testing.T) {
 		"v1.36-22-g06ea13a-ssh-agentβ/",
 	})
 }
-
-func TestFsNoSlashRoots(t *testing.T) {
-	// Test Fs with roots that does not end with '/', the logic that
-	// decides if url is to be considered a file or directory, based
-	// on result from a HEAD request.
-
-	// Handler for faking HEAD responses with different status codes
-	headCount := 0
-	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if r.Method == "HEAD" {
-			headCount++
-			responseCode, err := strconv.Atoi(path.Base(r.URL.String()))
-			require.NoError(t, err)
-			if strings.HasPrefix(r.URL.String(), "/redirect/") {
-				var redir string
-				if strings.HasPrefix(r.URL.String(), "/redirect/file/") {
-					redir = "/redirected"
-				} else if strings.HasPrefix(r.URL.String(), "/redirect/dir/") {
-					redir = "/redirected/"
-				} else {
-					require.Fail(t, "Redirect test requests must start with '/redirect/file/' or '/redirect/dir/'")
-				}
-				http.Redirect(w, r, redir, responseCode)
-			} else {
-				http.Error(w, http.StatusText(responseCode), responseCode)
-			}
-		}
-	})
-
-	// Make the test server
-	ts := httptest.NewServer(handler)
-	defer ts.Close()
-
-	// Configure the remote
-	configfile.Install()
-	m := configmap.Simple{
-		"type": "http",
-		"url":  ts.URL,
-	}
-
-	// Test
-	for i, test := range []struct {
-		root   string
-		isFile bool
-	}{
-		// 2xx success
-		{"parent/200", true},
-		{"parent/204", true},
-
-		// 3xx redirection Redirect status 301, 302, 303, 307, 308
-		{"redirect/file/301", true}, // Request is redirected to "/redirected"
-		{"redirect/dir/301", false}, // Request is redirected to "/redirected/"
-		{"redirect/file/302", true}, // Request is redirected to "/redirected"
-		{"redirect/dir/302", false}, // Request is redirected to "/redirected/"
-		{"redirect/file/303", true}, // Request is redirected to "/redirected"
-		{"redirect/dir/303", false}, // Request is redirected to "/redirected/"
-
-		{"redirect/file/304", true}, // Not really a redirect, handled like 4xx errors (below)
-		{"redirect/file/305", true}, // Not really a redirect, handled like 4xx errors (below)
-		{"redirect/file/306", true}, // Not really a redirect, handled like 4xx errors (below)
-
-		{"redirect/file/307", true}, // Request is redirected to "/redirected"
-		{"redirect/dir/307", false}, // Request is redirected to "/redirected/"
-		{"redirect/file/308", true}, // Request is redirected to "/redirected"
-		{"redirect/dir/308", false}, // Request is redirected to "/redirected/"
-
-		// 4xx client errors
-		{"parent/403", true},  // Forbidden status (head request blocked)
-		{"parent/404", false}, // Not found status
-	} {
-		for _, noHead := range []bool{false, true} {
-			var isFile bool
-			if noHead {
-				m.Set("no_head", "true")
-				isFile = true
-			} else {
-				m.Set("no_head", "false")
-				isFile = test.isFile
-			}
-			headCount = 0
-			f, err := NewFs(context.Background(), remoteName, test.root, m)
-			if noHead {
-				assert.Equal(t, 0, headCount)
-			} else {
-				assert.Equal(t, 1, headCount)
-			}
-			if isFile {
-				assert.ErrorIs(t, err, fs.ErrorIsFile)
-			} else {
-				assert.NoError(t, err)
-			}
-			var endpoint string
-			if isFile {
-				parent, _ := path.Split(test.root)
-				endpoint = "/" + parent
-			} else {
-				endpoint = "/" + test.root + "/"
-			}
-			what := fmt.Sprintf("i=%d, root=%q, isFile=%v, noHead=%v", i, test.root, isFile, noHead)
-			assert.Equal(t, ts.URL+endpoint, f.String(), what)
-		}
-	}
-}
--- a/backend/hubic/hubic.go
+++ b/backend/hubic/hubic.go
@@ -9,7 +9,6 @@ package hubic
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io/ioutil"
 	"net/http"
@@ -17,6 +16,7 @@ import (
 	"time"

 	swiftLib "github.com/ncw/swift/v2"
+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/swift"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config/configmap"
@@ -120,7 +120,7 @@ func (f *Fs) getCredentials(ctx context.Context) (err error) {
 	if resp.StatusCode < 200 || resp.StatusCode > 299 {
 		body, _ := ioutil.ReadAll(resp.Body)
 		bodyStr := strings.TrimSpace(strings.Replace(string(body), "\n", " ", -1))
-		return fmt.Errorf("failed to get credentials: %s: %s", resp.Status, bodyStr)
+		return errors.Errorf("failed to get credentials: %s: %s", resp.Status, bodyStr)
 	}
 	decoder := json.NewDecoder(resp.Body)
 	var result credentials
@@ -146,7 +146,7 @@ func (f *Fs) getCredentials(ctx context.Context) (err error) {
 func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, error) {
 	client, _, err := oauthutil.NewClient(ctx, name, m, oauthConfig)
 	if err != nil {
-		return nil, fmt.Errorf("failed to configure Hubic: %w", err)
+		return nil, errors.Wrap(err, "failed to configure Hubic")
 	}

 	f := &Fs{
@@ -163,7 +163,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	}
 	err = c.Authenticate(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("error authenticating swift connection: %w", err)
+		return nil, errors.Wrap(err, "error authenticating swift connection")
 	}

 	// Parse config into swift.Options struct
--- a/backend/jottacloud/api/types.go
+++ b/backend/jottacloud/api/types.go
@@ -2,9 +2,10 @@ package api

 import (
 	"encoding/xml"
-	"errors"
 	"fmt"
 	"time"
+
+	"github.com/pkg/errors"
 )

 const (
@@ -367,7 +368,6 @@ type JottaFile struct {
 	XMLName         xml.Name
 	Name            string `xml:"name,attr"`
 	Deleted         Flag   `xml:"deleted,attr"`
-	PublicURI       string `xml:"publicURI"`
 	PublicSharePath string `xml:"publicSharePath"`
 	State           string `xml:"currentRevision>state"`
 	CreatedAt       Time   `xml:"currentRevision>created"`
--- a/backend/jottacloud/jottacloud.go
+++ b/backend/jottacloud/jottacloud.go
@@ -7,8 +7,6 @@ import (
 	"encoding/base64"
 	"encoding/hex"
 	"encoding/json"
-	"encoding/xml"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -21,6 +19,7 @@ import (
 	"strings"
 	"time"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/backend/jottacloud/api"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
@@ -70,10 +69,6 @@ const (
 	teliaCloudTokenURL = "https://cloud-auth.telia.se/auth/realms/telia_se/protocol/openid-connect/token"
 	teliaCloudAuthURL  = "https://cloud-auth.telia.se/auth/realms/telia_se/protocol/openid-connect/auth"
 	teliaCloudClientID = "desktop"
-
-	tele2CloudTokenURL = "https://mittcloud-auth.tele2.se/auth/realms/comhem/protocol/openid-connect/token"
-	tele2CloudAuthURL  = "https://mittcloud-auth.tele2.se/auth/realms/comhem/protocol/openid-connect/auth"
-	tele2CloudClientID = "desktop"
 )

 // Register with Fs
@@ -91,7 +86,7 @@ func init() {
 			Advanced: true,
 		}, {
 			Name:     "trashed_only",
-			Help:     "Only show files that are in the trash.\n\nThis will show trashed files in their original directory structure.",
+			Help:     "Only show files that are in the trash.\nThis will show trashed files in their original directory structure.",
 			Default:  false,
 			Advanced: true,
 		}, {
@@ -127,18 +122,15 @@ func init() {
 func Config(ctx context.Context, name string, m configmap.Mapper, config fs.ConfigIn) (*fs.ConfigOut, error) {
 	switch config.State {
 	case "":
-		return fs.ConfigChooseFixed("auth_type_done", "config_type", `Authentication type.`, []fs.OptionExample{{
+		return fs.ConfigChooseFixed("auth_type_done", "config_type", `Authentication type`, []fs.OptionExample{{
 			Value: "standard",
-			Help:  "Standard authentication.\nUse this if you're a normal Jottacloud user.",
+			Help:  "Standard authentication - use this if you're a normal Jottacloud user.",
 		}, {
 			Value: "legacy",
-			Help:  "Legacy authentication.\nThis is only required for certain whitelabel versions of Jottacloud and not recommended for normal users.",
+			Help:  "Legacy authentication - this is only required for certain whitelabel versions of Jottacloud and not recommended for normal users.",
 		}, {
 			Value: "telia",
-			Help:  "Telia Cloud authentication.\nUse this if you are using Telia Cloud.",
-		}, {
-			Value: "tele2",
-			Help:  "Tele2 Cloud authentication.\nUse this if you are using Tele2 Cloud.",
+			Help:  "Telia Cloud authentication - use this if you are using Telia Cloud.",
 		}})
 	case "auth_type_done":
 		// Jump to next state according to config chosen
@@ -154,12 +146,12 @@ func Config(ctx context.Context, name string, m configmap.Mapper, config fs.Conf
 		srv := rest.NewClient(fshttp.NewClient(ctx))
 		token, tokenEndpoint, err := doTokenAuth(ctx, srv, loginToken)
 		if err != nil {
-			return nil, fmt.Errorf("failed to get oauth token: %w", err)
+			return nil, errors.Wrap(err, "failed to get oauth token")
 		}
 		m.Set(configTokenURL, tokenEndpoint)
 		err = oauthutil.PutToken(name, m, &token, true)
 		if err != nil {
-			return nil, fmt.Errorf("error while saving token: %w", err)
+			return nil, errors.Wrap(err, "error while saving token")
 		}
 		return fs.ConfigGoto("choose_device")
 	case "legacy": // configure a jottacloud backend using legacy authentication
@@ -176,7 +168,7 @@ machines.`)
 		if config.Result == "true" {
 			deviceRegistration, err := registerDevice(ctx, srv)
 			if err != nil {
-				return nil, fmt.Errorf("failed to register device: %w", err)
+				return nil, errors.Wrap(err, "failed to register device")
 			}
 			m.Set(configClientID, deviceRegistration.ClientID)
 			m.Set(configClientSecret, obscure.MustObscure(deviceRegistration.ClientSecret))
@@ -224,11 +216,11 @@ machines.`)
 		m.Set("password", "")
 		m.Set("auth_code", "")
 		if err != nil {
-			return nil, fmt.Errorf("failed to get oauth token: %w", err)
+			return nil, errors.Wrap(err, "failed to get oauth token")
 		}
 		err = oauthutil.PutToken(name, m, &token, true)
 		if err != nil {
-			return nil, fmt.Errorf("error while saving token: %w", err)
+			return nil, errors.Wrap(err, "error while saving token")
 		}
 		return fs.ConfigGoto("choose_device")
 	case "telia": // telia cloud config
@@ -246,21 +238,6 @@ machines.`)
 				RedirectURL: oauthutil.RedirectLocalhostURL,
 			},
 		})
-	case "tele2": // tele2 cloud config
-		m.Set("configVersion", fmt.Sprint(configVersion))
-		m.Set(configClientID, tele2CloudClientID)
-		m.Set(configTokenURL, tele2CloudTokenURL)
-		return oauthutil.ConfigOut("choose_device", &oauthutil.Options{
-			OAuth2Config: &oauth2.Config{
-				Endpoint: oauth2.Endpoint{
-					AuthURL:  tele2CloudAuthURL,
-					TokenURL: tele2CloudTokenURL,
-				},
-				ClientID:    tele2CloudClientID,
-				Scopes:      []string{"openid", "jotta-default", "offline_access"},
-				RedirectURL: oauthutil.RedirectLocalhostURL,
-			},
-		})
 	case "choose_device":
 		return fs.ConfigConfirm("choose_device_query", false, "config_non_standard", "Use a non standard device/mountpoint e.g. for accessing files uploaded using the official Jottacloud client?")
 	case "choose_device_query":
@@ -552,7 +529,7 @@ func getCustomerInfo(ctx context.Context, apiSrv *rest.Client) (info *api.Custom

 	_, err = apiSrv.CallJSON(ctx, &opts, nil, &info)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't get customer info: %w", err)
+		return nil, errors.Wrap(err, "couldn't get customer info")
 	}

 	return info, nil
@@ -567,7 +544,7 @@ func getDriveInfo(ctx context.Context, srv *rest.Client, username string) (info

 	_, err = srv.CallXML(ctx, &opts, nil, &info)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't get drive info: %w", err)
+		return nil, errors.Wrap(err, "couldn't get drive info")
 	}

 	return info, nil
@@ -582,7 +559,7 @@ func getDeviceInfo(ctx context.Context, srv *rest.Client, path string) (info *ap

 	_, err = srv.CallXML(ctx, &opts, nil, &info)
 	if err != nil {
-		return nil, fmt.Errorf("couldn't get device info: %w", err)
+		return nil, errors.Wrap(err, "couldn't get device info")
 	}

 	return info, nil
@@ -620,11 +597,9 @@ func (f *Fs) readMetaDataForPath(ctx context.Context, path string) (info *api.Jo
 	}

 	if err != nil {
-		return nil, fmt.Errorf("read metadata failed: %w", err)
+		return nil, errors.Wrap(err, "read metadata failed")
 	}
-	if result.XMLName.Local == "folder" {
-		return nil, fs.ErrorIsDir
-	} else if result.XMLName.Local != "file" {
+	if result.XMLName.Local != "file" {
 		return nil, fs.ErrorNotAFile
 	}
 	return &result, nil
@@ -743,7 +718,7 @@ func getOAuthClient(ctx context.Context, name string, m configmap.Mapper) (oAuth
 	// Create OAuth Client
 	oAuthClient, ts, err = oauthutil.NewClientWithBaseClient(ctx, name, m, oauthConfig, baseClient)
 	if err != nil {
-		return nil, nil, fmt.Errorf("Failed to configure Jottacloud oauth client: %w", err)
+		return nil, nil, errors.Wrap(err, "Failed to configure Jottacloud oauth client")
 	}
 	return oAuthClient, ts, nil
 }
@@ -787,7 +762,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 	// Renew the token in the background
 	f.tokenRenewer = oauthutil.NewRenew(f.String(), ts, func() error {
 		_, err := f.readMetaDataForPath(ctx, "")
-		if err == fs.ErrorNotAFile || err == fs.ErrorIsDir {
+		if err == fs.ErrorNotAFile {
 			err = nil
 		}
 		return err
@@ -809,7 +784,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		}
 		_, err := f.NewObject(context.TODO(), remote)
 		if err != nil {
-			if errors.Is(err, fs.ErrorObjectNotFound) || errors.Is(err, fs.ErrorNotAFile) || errors.Is(err, fs.ErrorIsDir) {
+			if errors.Cause(err) == fs.ErrorObjectNotFound || errors.Cause(err) == fs.ErrorNotAFile {
 				// File doesn't exist so return old f
 				f.root = root
 				return f, nil
@@ -832,10 +807,8 @@ func (f *Fs) newObjectWithInfo(ctx context.Context, remote string, info *api.Jot
 	}
 	var err error
 	if info != nil {
-		if !f.validFile(info) {
-			return nil, fs.ErrorObjectNotFound
-		}
-		err = o.setMetaData(info) // sets the info
+		// Set info
+		err = o.setMetaData(info)
 	} else {
 		err = o.readMetaData(ctx, false) // reads info and meta, returning an error
 	}
@@ -904,149 +877,88 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 				return nil, fs.ErrorDirNotFound
 			}
 		}
-		return nil, fmt.Errorf("couldn't list files: %w", err)
+		return nil, errors.Wrap(err, "couldn't list files")
 	}

-	if !f.validFolder(&result) {
+	if bool(result.Deleted) && !f.opt.TrashedOnly {
 		return nil, fs.ErrorDirNotFound
 	}

 	for i := range result.Folders {
 		item := &result.Folders[i]
-		if f.validFolder(item) {
-			remote := path.Join(dir, f.opt.Enc.ToStandardName(item.Name))
-			d := fs.NewDir(remote, time.Time(item.ModifiedAt))
-			entries = append(entries, d)
+		if !f.opt.TrashedOnly && bool(item.Deleted) {
+			continue
 		}
+		remote := path.Join(dir, f.opt.Enc.ToStandardName(item.Name))
+		d := fs.NewDir(remote, time.Time(item.ModifiedAt))
+		entries = append(entries, d)
 	}

 	for i := range result.Files {
 		item := &result.Files[i]
-		if f.validFile(item) {
-			remote := path.Join(dir, f.opt.Enc.ToStandardName(item.Name))
-			if o, err := f.newObjectWithInfo(ctx, remote, item); err == nil {
-				entries = append(entries, o)
+		if f.opt.TrashedOnly {
+			if !item.Deleted || item.State != "COMPLETED" {
+				continue
+			}
+		} else {
+			if item.Deleted || item.State != "COMPLETED" {
+				continue
 			}
 		}
+		remote := path.Join(dir, f.opt.Enc.ToStandardName(item.Name))
+		o, err := f.newObjectWithInfo(ctx, remote, item)
+		if err != nil {
+			continue
+		}
+		entries = append(entries, o)
 	}
 	return entries, nil
 }

-type listStreamTime time.Time
+// listFileDirFn is called from listFileDir to handle an object.
+type listFileDirFn func(fs.DirEntry) error

-func (c *listStreamTime) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
-	var v string
-	if err := d.DecodeElement(&v, &start); err != nil {
-		return err
-	}
-	t, err := time.Parse(time.RFC3339, v)
-	if err != nil {
-		return err
-	}
-	*c = listStreamTime(t)
-	return nil
-}
-
-func (c listStreamTime) MarshalJSON() ([]byte, error) {
-	return []byte(fmt.Sprintf("\"%s\"", time.Time(c).Format(time.RFC3339))), nil
-}
-
-func parseListRStream(ctx context.Context, r io.Reader, trimPrefix string, filesystem *Fs, callback func(fs.DirEntry) error) error {
-
-	type stats struct {
-		Folders int `xml:"folders"`
-		Files   int `xml:"files"`
-	}
-	var expected, actual stats
-
-	type xmlFile struct {
-		Path     string         `xml:"path"`
-		Name     string         `xml:"filename"`
-		Checksum string         `xml:"md5"`
-		Size     int64          `xml:"size"`
-		Modified listStreamTime `xml:"modified"`
-		Created  listStreamTime `xml:"created"`
-	}
-
-	type xmlFolder struct {
-		Path string `xml:"path"`
-	}
-
-	addFolder := func(path string) error {
-		return callback(fs.NewDir(filesystem.opt.Enc.ToStandardPath(path), time.Time{}))
-	}
-
-	addFile := func(f *xmlFile) error {
-		return callback(&Object{
-			hasMetaData: true,
-			fs:          filesystem,
-			remote:      filesystem.opt.Enc.ToStandardPath(path.Join(f.Path, f.Name)),
-			size:        f.Size,
-			md5:         f.Checksum,
-			modTime:     time.Time(f.Modified),
-		})
-	}
-
-	trimPathPrefix := func(p string) string {
-		p = strings.TrimPrefix(p, trimPrefix)
-		p = strings.TrimPrefix(p, "/")
-		return p
-	}
-
-	uniqueFolders := map[string]bool{}
-	decoder := xml.NewDecoder(r)
-
-	for {
-		t, err := decoder.Token()
-		if err != nil {
-			if err != io.EOF {
+// List the objects and directories into entries, from a
+// special kind of JottaFolder representing a FileDirLis
+func (f *Fs) listFileDir(ctx context.Context, remoteStartPath string, startFolder *api.JottaFolder, fn listFileDirFn) error {
+	pathPrefix := "/" + f.filePathRaw("") // Non-escaped prefix of API paths to be cut off, to be left with the remote path including the remoteStartPath
+	pathPrefixLength := len(pathPrefix)
+	startPath := path.Join(pathPrefix, remoteStartPath) // Non-escaped API path up to and including remoteStartPath, to decide if it should be created as a new dir object
+	startPathLength := len(startPath)
+	for i := range startFolder.Folders {
+		folder := &startFolder.Folders[i]
+		if folder.Deleted {
+			return nil
+		}
+		folderPath := f.opt.Enc.ToStandardPath(path.Join(folder.Path, folder.Name))
+		folderPathLength := len(folderPath)
+		var remoteDir string
+		if folderPathLength > pathPrefixLength {
+			remoteDir = folderPath[pathPrefixLength+1:]
+			if folderPathLength > startPathLength {
+				d := fs.NewDir(remoteDir, time.Time(folder.ModifiedAt))
+				err := fn(d)
+				if err != nil {
+					return err
+				}
+			}
+		}
+		for i := range folder.Files {
+			file := &folder.Files[i]
+			if file.Deleted || file.State != "COMPLETED" {
+				continue
+			}
+			remoteFile := path.Join(remoteDir, f.opt.Enc.ToStandardName(file.Name))
+			o, err := f.newObjectWithInfo(ctx, remoteFile, file)
+			if err != nil {
 				return err
 			}
-			break
-		}
-		switch se := t.(type) {
-		case xml.StartElement:
-			switch se.Name.Local {
-			case "file":
-				var f xmlFile
-				if err := decoder.DecodeElement(&f, &se); err != nil {
-					return err
-				}
-				f.Path = trimPathPrefix(f.Path)
-				actual.Files++
-				if !uniqueFolders[f.Path] {
-					uniqueFolders[f.Path] = true
-					actual.Folders++
-					if err := addFolder(f.Path); err != nil {
-						return err
-					}
-				}
-				if err := addFile(&f); err != nil {
-					return err
-				}
-			case "folder":
-				var f xmlFolder
-				if err := decoder.DecodeElement(&f, &se); err != nil {
-					return err
-				}
-				f.Path = trimPathPrefix(f.Path)
-				uniqueFolders[f.Path] = true
-				actual.Folders++
-				if err := addFolder(f.Path); err != nil {
-					return err
-				}
-			case "stats":
-				if err := decoder.DecodeElement(&expected, &se); err != nil {
-					return err
-				}
+			err = fn(o)
+			if err != nil {
+				return err
 			}
 		}
 	}
-
-	if expected.Folders != actual.Folders ||
-		expected.Files != actual.Files {
-		return fmt.Errorf("Invalid result from listStream: expected[%#v] != actual[%#v]", expected, actual)
-	}
 	return nil
 }

@@ -1061,27 +973,12 @@ func (f *Fs) ListR(ctx context.Context, dir string, callback fs.ListRCallback) (
 		Path:       f.filePath(dir),
 		Parameters: url.Values{},
 	}
-	opts.Parameters.Set("mode", "liststream")
-	list := walk.NewListRHelper(callback)
+	opts.Parameters.Set("mode", "list")

 	var resp *http.Response
+	var result api.JottaFolder // Could be JottaFileDirList, but JottaFolder is close enough
 	err = f.pacer.Call(func() (bool, error) {
-		resp, err = f.srv.Call(ctx, &opts)
-		if err != nil {
-			return shouldRetry(ctx, resp, err)
-		}
-
-		// liststream paths are /mountpoint/root/path
-		// so the returned paths should have /mountpoint/root/ trimmed
-		// as the caller is expecting path.
-		trimPrefix := path.Join("/", f.opt.Mountpoint, f.root)
-		err = parseListRStream(ctx, resp.Body, trimPrefix, f, func(d fs.DirEntry) error {
-			if d.Remote() == dir {
-				return nil
-			}
-			return list.Add(d)
-		})
-		_ = resp.Body.Close()
+		resp, err = f.srv.CallXML(ctx, &opts, nil, &result)
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
@@ -1091,8 +988,12 @@ func (f *Fs) ListR(ctx context.Context, dir string, callback fs.ListRCallback) (
 				return fs.ErrorDirNotFound
 			}
 		}
-		return fmt.Errorf("couldn't list files: %w", err)
+		return errors.Wrap(err, "couldn't list files")
 	}
+	list := walk.NewListRHelper(callback)
+	err = f.listFileDir(ctx, dir, &result, func(entry fs.DirEntry) error {
+		return list.Add(entry)
+	})
 	if err != nil {
 		return err
 	}
@@ -1187,7 +1088,7 @@ func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) (err error)
 		return shouldRetry(ctx, resp, err)
 	})
 	if err != nil {
-		return fmt.Errorf("couldn't purge directory: %w", err)
+		return errors.Wrap(err, "couldn't purge directory")
 	}

 	return nil
@@ -1254,7 +1155,7 @@ func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	info, err := f.copyOrMove(ctx, "cp", srcObj.filePath(), remote)

 	if err != nil {
-		return nil, fmt.Errorf("couldn't copy file: %w", err)
+		return nil, errors.Wrap(err, "couldn't copy file")
 	}

 	return f.newObjectWithInfo(ctx, remote, info)
@@ -1284,7 +1185,7 @@ func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object,
 	info, err := f.copyOrMove(ctx, "mv", srcObj.filePath(), remote)

 	if err != nil {
-		return nil, fmt.Errorf("couldn't move file: %w", err)
+		return nil, errors.Wrap(err, "couldn't move file")
 	}

 	return f.newObjectWithInfo(ctx, remote, info)
@@ -1328,7 +1229,7 @@ func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string
 	_, err = f.copyOrMove(ctx, "mvDir", path.Join(f.endpointURL, f.opt.Enc.FromStandardPath(srcPath))+"/", dstRemote)

 	if err != nil {
-		return fmt.Errorf("couldn't move directory: %w", err)
+		return errors.Wrap(err, "couldn't move directory")
 	}
 	return nil
 }
@@ -1362,28 +1263,20 @@ func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration,
 	}
 	if err != nil {
 		if unlink {
-			return "", fmt.Errorf("couldn't remove public link: %w", err)
+			return "", errors.Wrap(err, "couldn't remove public link")
 		}
-		return "", fmt.Errorf("couldn't create public link: %w", err)
+		return "", errors.Wrap(err, "couldn't create public link")
 	}
 	if unlink {
-		if result.PublicURI != "" {
-			return "", fmt.Errorf("couldn't remove public link - %q", result.PublicURI)
+		if result.PublicSharePath != "" {
+			return "", errors.Errorf("couldn't remove public link - %q", result.PublicSharePath)
 		}
 		return "", nil
 	}
-	if result.PublicURI == "" {
-		return "", errors.New("couldn't create public link - no uri received")
+	if result.PublicSharePath == "" {
+		return "", errors.New("couldn't create public link - no link path received")
 	}
-	if result.PublicSharePath != "" {
-		webLink := joinPath(baseURL, result.PublicSharePath)
-		fs.Debugf(nil, "Web link: %s", webLink)
-	} else {
-		fs.Debugf(nil, "No web link received")
-	}
-	directLink := joinPath(baseURL, fmt.Sprintf("opin/io/downloadPublic/%s/%s", f.user, result.PublicURI))
-	fs.Debugf(nil, "Direct link: %s", directLink)
-	return directLink, nil
+	return joinPath(baseURL, result.PublicSharePath), nil
 }

 // About gets quota information
@@ -1403,21 +1296,6 @@ func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
 	return usage, nil
 }

-// UserInfo fetches info about the current user
-func (f *Fs) UserInfo(ctx context.Context) (userInfo map[string]string, err error) {
-	cust, err := getCustomerInfo(ctx, f.apiSrv)
-	if err != nil {
-		return nil, err
-	}
-	return map[string]string{
-		"Username":         cust.Username,
-		"Email":            cust.Email,
-		"Name":             cust.Name,
-		"AccountType":      cust.AccountType,
-		"SubscriptionType": cust.SubscriptionType,
-	}, nil
-}
-
 // CleanUp empties the trash
 func (f *Fs) CleanUp(ctx context.Context) error {
 	opts := rest.Opts{
@@ -1428,7 +1306,7 @@ func (f *Fs) CleanUp(ctx context.Context) error {
 	var info api.TrashResponse
 	_, err := f.apiSrv.CallJSON(ctx, &opts, nil, &info)
 	if err != nil {
-		return fmt.Errorf("couldn't empty trash: %w", err)
+		return errors.Wrap(err, "couldn't empty trash")
 	}

 	return nil
@@ -1488,25 +1366,6 @@ func (o *Object) MimeType(ctx context.Context) string {
 	return o.mimeType
 }

-// validFile checks if info indicates file is valid
-func (f *Fs) validFile(info *api.JottaFile) bool {
-	if info.State != "COMPLETED" {
-		return false // File is incomplete or corrupt
-	}
-	if !info.Deleted {
-		return !f.opt.TrashedOnly // Regular file; return false if TrashedOnly, else true
-	}
-	return f.opt.TrashedOnly // Deleted file; return true if TrashedOnly, else false
-}
-
-// validFolder checks if info indicates folder is valid
-func (f *Fs) validFolder(info *api.JottaFolder) bool {
-	// Returns true if folder is not deleted.
-	// If TrashedOnly option then always returns true, because a folder not
-	// in trash must be traversed to get to files/subfolders that are.
-	return !bool(info.Deleted) || f.opt.TrashedOnly
-}
-
 // setMetaData sets the metadata from info
 func (o *Object) setMetaData(info *api.JottaFile) (err error) {
 	o.hasMetaData = true
@@ -1526,7 +1385,7 @@ func (o *Object) readMetaData(ctx context.Context, force bool) (err error) {
 	if err != nil {
 		return err
 	}
-	if !o.fs.validFile(info) {
+	if bool(info.Deleted) && !o.fs.opt.TrashedOnly {
 		return fs.ErrorObjectNotFound
 	}
 	return o.setMetaData(info)
@@ -1547,50 +1406,7 @@ func (o *Object) ModTime(ctx context.Context) time.Time {

 // SetModTime sets the modification time of the local fs object
 func (o *Object) SetModTime(ctx context.Context, modTime time.Time) error {
-	// make sure metadata is available, we need its current size and md5
-	err := o.readMetaData(ctx, false)
-	if err != nil {
-		fs.Logf(o, "Failed to read metadata: %v", err)
-		return err
-	}
-
-	// prepare allocate request with existing metadata but changed timestamps
-	var resp *http.Response
-	var options []fs.OpenOption
-	opts := rest.Opts{
-		Method:       "POST",
-		Path:         "files/v1/allocate",
-		Options:      options,
-		ExtraHeaders: make(map[string]string),
-	}
-	fileDate := api.Time(modTime).APIString()
-	var request = api.AllocateFileRequest{
-		Bytes:    o.size,
-		Created:  fileDate,
-		Modified: fileDate,
-		Md5:      o.md5,
-		Path:     path.Join(o.fs.opt.Mountpoint, o.fs.opt.Enc.FromStandardPath(path.Join(o.fs.root, o.remote))),
-	}
-
-	// send it
-	var response api.AllocateFileResponse
-	err = o.fs.pacer.Call(func() (bool, error) {
-		resp, err = o.fs.apiSrv.CallJSON(ctx, &opts, &request, &response)
-		return shouldRetry(ctx, resp, err)
-	})
-	if err != nil {
-		return err
-	}
-
-	// check response
-	if response.State != "COMPLETED" {
-		// could be the file was modified (size/md5 changed) between readMetaData and the allocate request
-		return errors.New("metadata did not match")
-	}
-
-	// update local metadata
-	o.modTime = modTime
-	return nil
+	return fs.ErrorCantSetModTime
 }

 // Storable returns a boolean showing whether this object storable
@@ -1690,7 +1506,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 			// if the object exists delete it
 			err = o.remove(ctx, true)
 			if err != nil {
-				return fmt.Errorf("failed to remove old object: %w", err)
+				return errors.Wrap(err, "failed to remove old object")
 			}
 		}
 		// if the object does not exist we can just continue but if the error is something different we should report that
@@ -1711,7 +1527,7 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		md5String, in, cleanup, err = readMD5(in, size, int64(o.fs.opt.MD5MemoryThreshold))
 		defer cleanup()
 		if err != nil {
-			return fmt.Errorf("failed to calculate MD5: %w", err)
+			return errors.Wrap(err, "failed to calculate MD5")
 		}
 		// Wrap the accounting back onto the stream
 		in = wrap(in)
@@ -1823,7 +1639,6 @@ var (
 	_ fs.ListRer      = (*Fs)(nil)
 	_ fs.PublicLinker = (*Fs)(nil)
 	_ fs.Abouter      = (*Fs)(nil)
-	_ fs.UserInfoer   = (*Fs)(nil)
 	_ fs.CleanUpper   = (*Fs)(nil)
 	_ fs.Object       = (*Object)(nil)
 	_ fs.MimeTyper    = (*Object)(nil)
--- a/backend/koofr/koofr.go
+++ b/backend/koofr/koofr.go
@@ -32,25 +32,29 @@ func init() {
 		NewFs:       NewFs,
 		Options: []fs.Option{{
 			Name:     "endpoint",
-			Help:     "The Koofr API endpoint to use.",
+			Help:     "The Koofr API endpoint to use",
 			Default:  "https://app.koofr.net",
+			Required: true,
 			Advanced: true,
 		}, {
 			Name:     "mountid",
-			Help:     "Mount ID of the mount to use.\n\nIf omitted, the primary mount is used.",
+			Help:     "Mount ID of the mount to use. If omitted, the primary mount is used.",
+			Required: false,
+			Default:  "",
 			Advanced: true,
 		}, {
 			Name:     "setmtime",
-			Help:     "Does the backend support setting modification time.\n\nSet this to false if you use a mount ID that points to a Dropbox or Amazon Drive backend.",
+			Help:     "Does the backend support setting modification time. Set this to false if you use a mount ID that points to a Dropbox or Amazon Drive backend.",
 			Default:  true,
+			Required: true,
 			Advanced: true,
 		}, {
 			Name:     "user",
-			Help:     "Your Koofr user name.",
+			Help:     "Your Koofr user name",
 			Required: true,
 		}, {
 			Name:       "password",
-			Help:       "Your Koofr password for rclone (generate one at https://app.koofr.net/app/admin/preferences/password).",
+			Help:       "Your Koofr password for rclone (generate one at https://app.koofr.net/app/admin/preferences/password)",
 			IsPassword: true,
 			Required:   true,
 		}, {
@@ -340,7 +344,7 @@ func (f *Fs) NewObject(ctx context.Context, remote string) (obj fs.Object, err e
 		return nil, translateErrorsObject(err)
 	}
 	if info.Type == "dir" {
-		return nil, fs.ErrorIsDir
+		return nil, fs.ErrorNotAFile
 	}
 	return &Object{
 		fs:     f,
@@ -604,25 +608,5 @@ func (f *Fs) PublicLink(ctx context.Context, remote string, expire fs.Duration,
 	if err != nil {
 		return "", translateErrorsDir(err)
 	}
-
-	// URL returned by API looks like following:
-	//
-	// https://app.koofr.net/links/35d9fb92-74a3-4930-b4ed-57f123bfb1a6
-	//
-	// Direct url looks like following:
-	//
-	// https://app.koofr.net/content/links/39a6cc01-3b23-477a-8059-c0fb3b0f15de/files/get?path=%2F
-	//
-	// I am not sure about meaning of "path" parameter; in my expriments
-	// it is always "%2F", and omitting it or putting any other value
-	// results in 404.
-	//
-	// There is one more quirk: direct link to file in / returns that file,
-	// direct link to file somewhere else in hierarchy returns zip archive
-	// with one member.
-	link := linkData.URL
-	link = strings.ReplaceAll(link, "/links", "/content/links")
-	link += "/files/get?path=%2F"
-
-	return link, nil
+	return linkData.ShortURL, nil
 }
--- a/backend/local/about_unix.go
+++ b/backend/local/about_unix.go
@@ -1,14 +1,13 @@
-//go:build darwin || dragonfly || freebsd || linux
 // +build darwin dragonfly freebsd linux

 package local

 import (
 	"context"
-	"fmt"
 	"os"
 	"syscall"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 )

@@ -20,7 +19,7 @@ func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
 		if os.IsNotExist(err) {
 			return nil, fs.ErrorDirNotFound
 		}
-		return nil, fmt.Errorf("failed to read disk usage: %w", err)
+		return nil, errors.Wrap(err, "failed to read disk usage")
 	}
 	bs := int64(s.Bsize) // nolint: unconvert
 	usage := &fs.Usage{
--- a/backend/local/about_windows.go
+++ b/backend/local/about_windows.go
@@ -1,14 +1,13 @@
-//go:build windows
 // +build windows

 package local

 import (
 	"context"
-	"fmt"
 	"syscall"
 	"unsafe"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 )

@@ -24,7 +23,7 @@ func (f *Fs) About(ctx context.Context) (*fs.Usage, error) {
 		uintptr(unsafe.Pointer(&free)),      // lpTotalNumberOfFreeBytes
 	)
 	if e1 != syscall.Errno(0) {
-		return nil, fmt.Errorf("failed to read disk usage: %w", e1)
+		return nil, errors.Wrap(e1, "failed to read disk usage")
 	}
 	usage := &fs.Usage{
 		Total: fs.NewUsageValue(total),        // quota of bytes that can be used
--- a/backend/local/encode_darwin.go
+++ b/backend/local/encode_darwin.go
@@ -0,0 +1,11 @@
+//+build darwin
+
+package local
+
+import "github.com/rclone/rclone/lib/encoder"
+
+// This is the encoding used by the local backend for macOS
+//
+// macOS can't store invalid UTF-8, it converts them into %XX encoding
+const defaultEnc = (encoder.Base |
+	encoder.EncodeInvalidUtf8)
--- a/backend/local/encode_other.go
+++ b/backend/local/encode_other.go
@@ -0,0 +1,8 @@
+//+build !windows,!darwin
+
+package local
+
+import "github.com/rclone/rclone/lib/encoder"
+
+// This is the encoding used by the local backend for non windows platforms
+const defaultEnc = encoder.Base
--- a/backend/local/encode_windows.go
+++ b/backend/local/encode_windows.go
@@ -1,9 +1,10 @@
-//go:build windows
-// +build windows
+//+build windows

-package encoder
+package local

-// OS is the encoding used by the local backend for windows platforms
+import "github.com/rclone/rclone/lib/encoder"
+
+// This is the encoding used by the local backend for windows platforms
 //
 // List of replaced characters:
 //   < (less than)     -> '＜' // FULLWIDTH LESS-THAN SIGN
@@ -23,10 +24,10 @@ package encoder
 // Also encode invalid UTF-8 bytes as Go can't convert them to UTF-16.
 //
 // https://docs.microsoft.com/de-de/windows/desktop/FileIO/naming-a-file#naming-conventions
-const OS = (Base |
-	EncodeWin |
-	EncodeBackSlash |
-	EncodeCtl |
-	EncodeRightSpace |
-	EncodeRightPeriod |
-	EncodeInvalidUtf8)
+const defaultEnc = (encoder.Base |
+	encoder.EncodeWin |
+	encoder.EncodeBackSlash |
+	encoder.EncodeCtl |
+	encoder.EncodeRightSpace |
+	encoder.EncodeRightPeriod |
+	encoder.EncodeInvalidUtf8)
--- a/backend/local/fadvise_other.go
+++ b/backend/local/fadvise_other.go
@@ -1,5 +1,4 @@
-//go:build !linux
-// +build !linux
+//+build !linux

 package local

--- a/backend/local/fadvise_unix.go
+++ b/backend/local/fadvise_unix.go
@@ -1,5 +1,4 @@
-//go:build linux
-// +build linux
+//+build linux

 package local

--- a/backend/local/lchtimes.go
+++ b/backend/local/lchtimes.go
@@ -1,4 +1,3 @@
-//go:build windows || plan9 || js
 // +build windows plan9 js

 package local
--- a/backend/local/lchtimes_unix.go
+++ b/backend/local/lchtimes_unix.go
@@ -1,4 +1,3 @@
-//go:build !windows && !plan9 && !js
 // +build !windows,!plan9,!js

 package local
--- a/backend/local/local.go
+++ b/backend/local/local.go
@@ -4,7 +4,6 @@ package local
 import (
 	"bytes"
 	"context"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -17,6 +16,7 @@ import (
 	"time"
 	"unicode/utf8"

+	"github.com/pkg/errors"
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/accounting"
 	"github.com/rclone/rclone/fs/config"
@@ -44,11 +44,11 @@ func init() {
 		CommandHelp: commandHelp,
 		Options: []fs.Option{{
 			Name:     "nounc",
-			Help:     "Disable UNC (long path names) conversion on Windows.",
+			Help:     "Disable UNC (long path names) conversion on Windows",
 			Advanced: runtime.GOOS != "windows",
 			Examples: []fs.OptionExample{{
 				Value: "true",
-				Help:  "Disables long file names.",
+				Help:  "Disables long file names",
 			}},
 		}, {
 			Name:     "copy_links",
@@ -59,7 +59,7 @@ func init() {
 			Advanced: true,
 		}, {
 			Name:     "links",
-			Help:     "Translate symlinks to/from regular files with a '" + linkSuffix + "' extension.",
+			Help:     "Translate symlinks to/from regular files with a '" + linkSuffix + "' extension",
 			Default:  false,
 			NoPrefix: true,
 			ShortOpt: "l",
@@ -67,7 +67,6 @@ func init() {
 		}, {
 			Name: "skip_links",
 			Help: `Don't warn about skipped symlinks.
-
 This flag disables warning messages on skipped symlinks or junction
 points, as you explicitly acknowledge that they should be skipped.`,
 			Default:  false,
@@ -75,21 +74,21 @@ points, as you explicitly acknowledge that they should be skipped.`,
 			Advanced: true,
 		}, {
 			Name: "zero_size_links",
-			Help: `Assume the Stat size of links is zero (and read them instead) (deprecated).
+			Help: `Assume the Stat size of links is zero (and read them instead) (Deprecated)

-Rclone used to use the Stat size of links as the link size, but this fails in quite a few places:
+Rclone used to use the Stat size of links as the link size, but this fails in quite a few places

 - Windows
 - On some virtual filesystems (such ash LucidLink)
 - Android

-So rclone now always reads the link.
+So rclone now always reads the link
 `,
 			Default:  false,
 			Advanced: true,
 		}, {
 			Name: "unicode_normalization",
-			Help: `Apply unicode NFC normalization to paths and filenames.
+			Help: `Apply unicode NFC normalization to paths and filenames

 This flag can be used to normalize file names into unicode NFC form
 that are read from the local filesystem.
@@ -107,7 +106,7 @@ routine so this flag shouldn't normally be used.`,
 			Advanced: true,
 		}, {
 			Name: "no_check_updated",
-			Help: `Don't check to see if the files change during upload.
+			Help: `Don't check to see if the files change during upload

 Normally rclone checks the size and modification time of files as they
 are being uploaded and aborts with a message which starts "can't copy
@@ -153,7 +152,7 @@ to override the default choice.`,
 			Advanced: true,
 		}, {
 			Name: "case_insensitive",
-			Help: `Force the filesystem to report itself as case insensitive.
+			Help: `Force the filesystem to report itself as case insensitive

 Normally the local backend declares itself as case insensitive on
 Windows/macOS and case sensitive for everything else.  Use this flag
@@ -162,7 +161,7 @@ to override the default choice.`,
 			Advanced: true,
 		}, {
 			Name: "no_preallocate",
-			Help: `Disable preallocation of disk space for transferred files.
+			Help: `Disable preallocation of disk space for transferred files

 Preallocation of disk space helps prevent filesystem fragmentation.
 However, some virtual filesystem layers (such as Google Drive File
@@ -173,7 +172,7 @@ Use this flag to disable preallocation.`,
 			Advanced: true,
 		}, {
 			Name: "no_sparse",
-			Help: `Disable sparse files for multi-thread downloads.
+			Help: `Disable sparse files for multi-thread downloads

 On Windows platforms rclone will make sparse files when doing
 multi-thread downloads. This avoids long pauses on large files where
@@ -183,7 +182,7 @@ cause disk fragmentation and can be slow to work with.`,
 			Advanced: true,
 		}, {
 			Name: "no_set_modtime",
-			Help: `Disable setting modtime.
+			Help: `Disable setting modtime

 Normally rclone updates modification time of files after they are done
 uploading. This can cause permissions issues on Linux platforms when 
@@ -196,7 +195,7 @@ enabled, rclone will no longer update the modtime after copying a file.`,
 			Name:     config.ConfigEncoding,
 			Help:     config.ConfigEncodingHelp,
 			Advanced: true,
-			Default:  encoder.OS,
+			Default:  defaultEnc,
 		}},
 	}
 	fs.Register(fsi)
@@ -402,7 +401,7 @@ func (f *Fs) newObjectWithInfo(remote string, info os.FileInfo) (fs.Object, erro

 	}
 	if o.mode.IsDir() {
-		return nil, fs.ErrorIsDir
+		return nil, errors.Wrapf(fs.ErrorNotAFile, "%q", remote)
 	}
 	return o, nil
 }
@@ -432,7 +431,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 	fd, err := os.Open(fsDirPath)
 	if err != nil {
 		isPerm := os.IsPermission(err)
-		err = fmt.Errorf("failed to open directory %q: %w", dir, err)
+		err = errors.Wrapf(err, "failed to open directory %q", dir)
 		fs.Errorf(dir, "%v", err)
 		if isPerm {
 			_ = accounting.Stats(ctx).Error(fserrors.NoRetryError(err))
@@ -443,7 +442,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 	defer func() {
 		cerr := fd.Close()
 		if cerr != nil && err == nil {
-			err = fmt.Errorf("failed to close directory %q:: %w", dir, cerr)
+			err = errors.Wrapf(cerr, "failed to close directory %q:", dir)
 		}
 	}()

@@ -473,7 +472,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 						continue
 					}
 					if fierr != nil {
-						err = fmt.Errorf("failed to read directory %q: %w", namepath, err)
+						err = errors.Wrapf(err, "failed to read directory %q", namepath)
 						fs.Errorf(dir, "%v", fierr)
 						_ = accounting.Stats(ctx).Error(fserrors.NoRetryError(fierr)) // fail the sync
 						continue
@@ -483,7 +482,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 			}
 		}
 		if err != nil {
-			return nil, fmt.Errorf("failed to read directory entry: %w", err)
+			return nil, errors.Wrap(err, "failed to read directory entry")
 		}

 		for _, fi := range fis {
@@ -496,7 +495,7 @@ func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err e
 				fi, err = os.Stat(localPath)
 				if os.IsNotExist(err) || isCircularSymlinkError(err) {
 					// Skip bad symlinks and circular symlinks
-					err = fserrors.NoRetryError(fmt.Errorf("symlink: %w", err))
+					err = fserrors.NoRetryError(errors.Wrap(err, "symlink"))
 					fs.Errorf(newRemote, "Listing error: %v", err)
 					err = accounting.Stats(ctx).Error(err)
 					continue
@@ -570,8 +569,9 @@ func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, opt

 // Mkdir creates the directory if it doesn't exist
 func (f *Fs) Mkdir(ctx context.Context, dir string) error {
+	// FIXME: https://github.com/syncthing/syncthing/blob/master/lib/osutil/mkdirall_windows.go
 	localPath := f.localPath(dir)
-	err := file.MkdirAll(localPath, 0777)
+	err := os.MkdirAll(localPath, 0777)
 	if err != nil {
 		return err
 	}
@@ -672,7 +672,7 @@ func (f *Fs) Purge(ctx context.Context, dir string) error {
 		return err
 	}
 	if !fi.Mode().IsDir() {
-		return fmt.Errorf("can't purge non directory: %q", dir)
+		return errors.Errorf("can't purge non directory: %q", dir)
 	}
 	return os.RemoveAll(dir)
 }
@@ -765,7 +765,7 @@ func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string

 	// Create parent of destination
 	dstParentPath := filepath.Dir(dstPath)
-	err = file.MkdirAll(dstParentPath, 0777)
+	err = os.MkdirAll(dstParentPath, 0777)
 	if err != nil {
 		return err
 	}
@@ -866,12 +866,12 @@ func (o *Object) Hash(ctx context.Context, r hash.Type) (string, error) {
 	err := o.lstat()
 	var changed bool
 	if err != nil {
-		if errors.Is(err, os.ErrNotExist) {
+		if os.IsNotExist(errors.Cause(err)) {
 			// If file not found then we assume any accumulated
 			// hashes are OK - this will error on Open
 			changed = true
 		} else {
-			return "", fmt.Errorf("hash: failed to stat: %w", err)
+			return "", errors.Wrap(err, "hash: failed to stat")
 		}
 	} else {
 		o.fs.objectMetaMu.RLock()
@@ -900,16 +900,16 @@ func (o *Object) Hash(ctx context.Context, r hash.Type) (string, error) {
 			in = readers.NewLimitedReadCloser(in, o.size)
 		}
 		if err != nil {
-			return "", fmt.Errorf("hash: failed to open: %w", err)
+			return "", errors.Wrap(err, "hash: failed to open")
 		}
 		var hashes map[hash.Type]string
 		hashes, err = hash.StreamTypes(in, hash.NewHashSet(r))
 		closeErr := in.Close()
 		if err != nil {
-			return "", fmt.Errorf("hash: failed to read: %w", err)
+			return "", errors.Wrap(err, "hash: failed to read")
 		}
 		if closeErr != nil {
-			return "", fmt.Errorf("hash: failed to close: %w", closeErr)
+			return "", errors.Wrap(closeErr, "hash: failed to close")
 		}
 		hashValue = hashes[r]
 		o.fs.objectMetaMu.Lock()
@@ -990,17 +990,17 @@ func (file *localOpenFile) Read(p []byte) (n int, err error) {
 		// Check if file has the same size and modTime
 		fi, err := file.fd.Stat()
 		if err != nil {
-			return 0, fmt.Errorf("can't read status of source file while transferring: %w", err)
+			return 0, errors.Wrap(err, "can't read status of source file while transferring")
 		}
 		file.o.fs.objectMetaMu.RLock()
 		oldtime := file.o.modTime
 		oldsize := file.o.size
 		file.o.fs.objectMetaMu.RUnlock()
 		if oldsize != fi.Size() {
-			return 0, fserrors.NoLowLevelRetryError(fmt.Errorf("can't copy - source file is being updated (size changed from %d to %d)", oldsize, fi.Size()))
+			return 0, fserrors.NoLowLevelRetryError(errors.Errorf("can't copy - source file is being updated (size changed from %d to %d)", oldsize, fi.Size()))
 		}
 		if !oldtime.Equal(fi.ModTime()) {
-			return 0, fserrors.NoLowLevelRetryError(fmt.Errorf("can't copy - source file is being updated (mod time changed from %v to %v)", oldtime, fi.ModTime()))
+			return 0, fserrors.NoLowLevelRetryError(errors.Errorf("can't copy - source file is being updated (mod time changed from %v to %v)", oldtime, fi.ModTime()))
 		}
 	}

@@ -1099,7 +1099,7 @@ func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.Read
 // mkdirAll makes all the directories needed to store the object
 func (o *Object) mkdirAll() error {
 	dir := filepath.Dir(o.path)
-	return file.MkdirAll(dir, 0777)
+	return os.MkdirAll(dir, 0777)
 }

 type nopWriterCloser struct {
@@ -1133,9 +1133,6 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
 		return err
 	}

-	// Wipe hashes before update
-	o.clearHashCache()
-
 	var symlinkData bytes.Buffer
 	// If the object is a regular file, create it.
 	// If it is a translated link, just read in the contents, and
@@ -1298,13 +1295,6 @@ func (o *Object) setMetadata(info os.FileInfo) {
 	}
 }

-// clearHashCache wipes any cached hashes for the object
-func (o *Object) clearHashCache() {
-	o.fs.objectMetaMu.Lock()
-	o.hashes = nil
-	o.fs.objectMetaMu.Unlock()
-}
-
 // Stat an Object into info
 func (o *Object) lstat() error {
 	info, err := o.fs.lstat(o.path)
@@ -1316,7 +1306,6 @@ func (o *Object) lstat() error {

 // Remove an object
 func (o *Object) Remove(ctx context.Context) error {
-	o.clearHashCache()
 	return remove(o.path)
 }

--- a/backend/local/local_internal_test.go
+++ b/backend/local/local_internal_test.go
@@ -1,7 +1,6 @@
 package local

 import (
-	"bytes"
 	"context"
 	"io/ioutil"
 	"os"
@@ -13,7 +12,6 @@ import (
 	"github.com/rclone/rclone/fs"
 	"github.com/rclone/rclone/fs/config/configmap"
 	"github.com/rclone/rclone/fs/hash"
-	"github.com/rclone/rclone/fs/object"
 	"github.com/rclone/rclone/fstest"
 	"github.com/rclone/rclone/lib/file"
 	"github.com/rclone/rclone/lib/readers"
@@ -95,16 +93,16 @@ func TestSymlink(t *testing.T) {
 	file2d := fstest.NewItem("symlink.txt", "hello", modTime1)

 	// Check with no symlink flags
-	r.CheckLocalItems(t, file1)
-	r.CheckRemoteItems(t)
+	fstest.CheckItems(t, r.Flocal, file1)
+	fstest.CheckItems(t, r.Fremote)

 	// Set fs into "-L" mode
 	f.opt.FollowSymlinks = true
 	f.opt.TranslateSymlinks = false
 	f.lstat = os.Stat

-	r.CheckLocalItems(t, file1, file2d)
-	r.CheckRemoteItems(t)
+	fstest.CheckItems(t, r.Flocal, file1, file2d)
+	fstest.CheckItems(t, r.Fremote)

 	// Set fs into "-l" mode
 	f.opt.FollowSymlinks = false
@@ -113,7 +111,7 @@ func TestSymlink(t *testing.T) {

 	fstest.CheckListingWithPrecision(t, r.Flocal, []fstest.Item{file1, file2}, nil, fs.ModTimeNotSupported)
 	if haveLChtimes {
-		r.CheckLocalItems(t, file1, file2)
+		fstest.CheckItems(t, r.Flocal, file1, file2)
 	}

 	// Create a symlink
@@ -121,7 +119,7 @@ func TestSymlink(t *testing.T) {
 	file3 := r.WriteObjectTo(ctx, r.Flocal, "symlink2.txt"+linkSuffix, "file.txt", modTime3, false)
 	fstest.CheckListingWithPrecision(t, r.Flocal, []fstest.Item{file1, file2, file3}, nil, fs.ModTimeNotSupported)
 	if haveLChtimes {
-		r.CheckLocalItems(t, file1, file2, file3)
+		fstest.CheckItems(t, r.Flocal, file1, file2, file3)
 	}

 	// Check it got the correct contents
@@ -168,64 +166,3 @@ func TestSymlinkError(t *testing.T) {
 	_, err := NewFs(context.Background(), "local", "/", m)
 	assert.Equal(t, errLinksAndCopyLinks, err)
 }
-
-// Test hashes on updating an object
-func TestHashOnUpdate(t *testing.T) {
-	ctx := context.Background()
-	r := fstest.NewRun(t)
-	defer r.Finalise()
-	const filePath = "file.txt"
-	when := time.Now()
-	r.WriteFile(filePath, "content", when)
-	f := r.Flocal.(*Fs)
-
-	// Get the object
-	o, err := f.NewObject(ctx, filePath)
-	require.NoError(t, err)
-
-	// Test the hash is as we expect
-	md5, err := o.Hash(ctx, hash.MD5)
-	require.NoError(t, err)
-	assert.Equal(t, "9a0364b9e99bb480dd25e1f0284c8555", md5)
-
-	// Reupload it with diferent contents but same size and timestamp
-	var b = bytes.NewBufferString("CONTENT")
-	src := object.NewStaticObjectInfo(filePath, when, int64(b.Len()), true, nil, f)
-	err = o.Update(ctx, b, src)
-	require.NoError(t, err)
-
-	// Check the hash is as expected
-	md5, err = o.Hash(ctx, hash.MD5)
-	require.NoError(t, err)
-	assert.Equal(t, "45685e95985e20822fb2538a522a5ccf", md5)
-}
-
-// Test hashes on deleting an object
-func TestHashOnDelete(t *testing.T) {
-	ctx := context.Background()
-	r := fstest.NewRun(t)
-	defer r.Finalise()
-	const filePath = "file.txt"
-	when := time.Now()
-	r.WriteFile(filePath, "content", when)
-	f := r.Flocal.(*Fs)
-
-	// Get the object
-	o, err := f.NewObject(ctx, filePath)
-	require.NoError(t, err)
-
-	// Test the hash is as we expect
-	md5, err := o.Hash(ctx, hash.MD5)
-	require.NoError(t, err)
-	assert.Equal(t, "9a0364b9e99bb480dd25e1f0284c8555", md5)
-
-	// Delete the object
-	require.NoError(t, o.Remove(ctx))
-
-	// Test the hash cache is empty
-	require.Nil(t, o.(*Object).hashes)
-
-	// Test the hash returns an error
-	_, err = o.Hash(ctx, hash.MD5)
-	require.Error(t, err)
-}
--- a/backend/local/read_device_other.go
+++ b/backend/local/read_device_other.go
@@ -1,6 +1,5 @@
 // Device reading functions

-//go:build !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris
 // +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris

 package local
--- a/backend/local/read_device_unix.go
+++ b/backend/local/read_device_unix.go
@@ -1,6 +1,5 @@
 // Device reading functions

-//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 // +build darwin dragonfly freebsd linux netbsd openbsd solaris

 package local
--- a/backend/local/remove_other.go
+++ b/backend/local/remove_other.go
@@ -1,5 +1,4 @@
-//go:build !windows
-// +build !windows
+//+build !windows

 package local

--- a/backend/local/remove_windows.go
+++ b/backend/local/remove_windows.go
@@ -1,5 +1,4 @@
-//go:build windows
-// +build windows
+//+build windows

 package local

--- a/backend/local/symlink.go
+++ b/backend/local/symlink.go
@@ -1,4 +1,3 @@
-//go:build !windows && !plan9 && !js
 // +build !windows,!plan9,!js

 package local
--- a/backend/local/symlink_other.go
+++ b/backend/local/symlink_other.go
@@ -1,4 +1,3 @@
-//go:build windows || plan9 || js
 // +build windows plan9 js

 package local
--- a/backend/local/tests_test.go
+++ b/backend/local/tests_test.go
@@ -3,8 +3,6 @@ package local
 import (
 	"runtime"
 	"testing"
-
-	"github.com/rclone/rclone/lib/encoder"
 )

 // Test Windows character replacements
@@ -23,7 +21,7 @@ func TestCleanWindows(t *testing.T) {
 		t.Skipf("windows only")
 	}
 	for _, test := range testsWindows {
-		got := cleanRootPath(test[0], true, encoder.OS)
+		got := cleanRootPath(test[0], true, defaultEnc)
 		expect := test[1]
 		if got != expect {
 			t.Fatalf("got %q, expected %q", got, expect)
--- a/Show More
+++ b/Show More