diff --git a/.azure-pipelines/auto.fanout.yml b/.azure-pipelines/auto.fanout.yml
deleted file mode 100644
index def19a87076..00000000000
--- a/.azure-pipelines/auto.fanout.yml
+++ /dev/null
@@ -1,521 +0,0 @@
-#
-# Azure Pipelines "auto" branch build for Rust on Linux, macOS, and Windows.
-# 
-# Notes:
-# To get sccache working, I (John Erickson) had to build it with the Azure feature enabled
-# and with openssl statically-linked for Linux.
-# Here's the build (with a backpointer to source) of where the bits came from:
-# https://dev.azure.com/johnterickson/rust-lang/_build/results?buildId=275
-
-name: fanout 
-pr: none
-trigger:
-- auto
-
-variables:
-- group: caching
-
-jobs:
-# WINDOWS JOBS
-- job: Windows
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: tar
-  pool:
-    vmImage: 'vs2017-win2016'
-  steps:
-  - template: steps/windows.yml
-  strategy:
-    matrix:
-      # 32/64 bit MSVC tests
-      x86_64-msvc-1:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        SCRIPT: make ci-subset-1
-      x86_64-msvc-2:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        SCRIPT: make ci-subset-2
-
-- job: Windows_build  
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: tar
-  pool:
-    vmImage: 'vs2017-win2016'
-  steps:
-  - template: steps/windows.yml
-  - script: |
-      echo on
-      echo "##vso[task.setvariable variable=TAR_PATH]%TEMP%\drop.tar"
-  - bash: |
-      set -x
-      $TAR_COMMAND --dereference --exclude=.git --exclude=citools $SUBMODULES_EXCLUDES -cf $TEMP/drop.tar .
-      $TAR_COMMAND --append --file=$TEMP/drop.tar citools
-  - task: PublishPipelineArtifact@0
-    inputs:
-      artifactName: $(System.JobDisplayName)
-      targetPath: $(TAR_PATH)
-  strategy:
-    matrix:
-      # 32/64 bit MSVC tests
-      x86_64-msvc-build:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        SCRIPT: make ci-test-prepare
-
-- job: Windows_test
-  dependsOn: Windows_build
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: tar
-    SKIP_PREP: 1
-    KEEP_STAGE: '--keep-stage 0 --keep-stage 1'
-    SKIP_LLVM_BUILD: 1
-  pool:
-    vmImage: 'vs2017-win2016'
-  steps:
-  - checkout: self
-    fetchDepth: 2
-  - script: |
-      set MSYS_PATH=%CD%\citools\msys64
-      set PATH=%MSYS_PATH%\usr\bin;%PATH%
-      where rev
-      rev --help
-      where make
-      echo ##vso[task.prependpath]%MSYS_PATH%\usr\bin
-    displayName: Install msys2
-
-  # # If we need to download a custom MinGW, do so here and set the path
-  # # appropriately.
-  # #
-  # # Note that this *also* means that we're not using what is typically
-  # # /mingw32/bin/python2.7.exe, which is a "correct" python interpreter where
-  # # /usr/bin/python2.7.exe is not. To ensure we use the right interpreter we
-  # # move `C:\Python27` ahead in PATH and then also make sure the `python2.7.exe`
-  # # file exists in there (which it doesn't by default).
-  # - script: |
-  #     powershell -Command "iwr -outf %MINGW_ARCHIVE% %MINGW_URL%/%MINGW_ARCHIVE%"
-  #     7z x -y %MINGW_ARCHIVE% > nul
-  #     echo ##vso[task.prependpath]%CD%\%MINGW_DIR%\bin
-  #   condition: and(succeeded(), ne(variables['MINGW_URL'],''))
-  #   displayName: Download custom MinGW
-
-  # If we're compiling for MSVC then we, like most other distribution builders,
-  # switch to clang as the compiler. This'll allow us eventually to enable LTO
-  # amongst LLVM and rustc. Note that we only do this on MSVC as I don't think
-  # clang has an output mode compatible with MinGW that we need. If it does we
-  # should switch to clang for MinGW as well!
-  #
-  # Note that the LLVM installer is an NSIS installer
-  #
-  # Original downloaded here came from
-  # http://releases.llvm.org/7.0.0/LLVM-7.0.0-win64.exe
-  - script: |
-      # powershell -Command "iwr -outf LLVM-7.0.0-win64.exe https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/LLVM-7.0.0-win64.exe"
-      # .\LLVM-7.0.0-win64.exe /S /NCRC /D=C:\clang-rust
-      set CLANG_DIR=%CD%\citools\clang-rust
-      set RUST_CONFIGURE_ARGS=%RUST_CONFIGURE_ARGS% --set llvm.clang-cl=%CLANG_DIR%\bin\clang-cl.exe
-      echo ##vso[task.setvariable variable=RUST_CONFIGURE_ARGS]%RUST_CONFIGURE_ARGS%
-    condition: and(succeeded(), eq(variables['MINGW_URL'],''))
-    displayName: Download clang
-
-  # # Here we do a pretty heinous thing which is to mangle the MinGW installation
-  # # we just had above. Currently, as of this writing, we're using MinGW-w64
-  # # builds of gcc, and that's currently at 6.3.0. We use 6.3.0 as it appears to
-  # # be the first version which contains a fix for #40546, builds randomly
-  # # failing during LLVM due to ar.exe/ranlib.exe failures.
-  # #
-  # # Unfortunately, though, 6.3.0 *also* is the first version of MinGW-w64 builds
-  # # to contain a regression in gdb (#40184). As a result if we were to use the
-  # # gdb provided (7.11.1) then we would fail all debuginfo tests.
-  # #
-  # # In order to fix spurious failures (pretty high priority) we use 6.3.0. To
-  # # avoid disabling gdb tests we download an *old* version of gdb, specifically
-  # # that found inside the 6.2.0 distribution. We then overwrite the 6.3.0 gdb
-  # # with the 6.2.0 gdb to get tests passing.
-  # #
-  # # Note that we don't literally overwrite the gdb.exe binary because it appears
-  # # to just use gdborig.exe, so that's the binary we deal with instead.
-  # - script: |
-  #     echo ON
-  #     powershell -Command "iwr -outf 2017-04-20-%MSYS_BITS%bit-gdborig.exe %MINGW_URL%/2017-04-20-%MSYS_BITS%bit-gdborig.exe"
-  #     mv 2017-04-20-%MSYS_BITS%bit-gdborig.exe %MINGW_DIR%\bin\gdborig.exe
-  #   condition: and(succeeded(), ne(variables['MINGW_URL'],''))
-  #   displayName: Override with 6.3.0 gdb with 6.2.0 gdb
-
-  # Otherwise pull in the MinGW installed on appveyor
-  - script: |
-      echo Find mingw
-      set PATH | findstr /i msys
-      set PATH | findstr /i mingw
-      echo ##vso[task.prependpath]C:\msys64\mingw%MSYS_BITS%\bin
-    condition: and(succeeded(), eq(variables['MINGW_URL'],''))
-    displayName: Add MinGW to path
-
-  - script: |
-      copy C:\Python27amd64\python.exe C:\Python27amd64\python2.7.exe
-      echo ##vso[task.prependpath]C:\Python27amd64
-    displayName: Prefer the "native" Python as LLVM has trouble building with MSYS sometimes
-
-  - script: |
-      REM md sccache
-      REM powershell -Command "iwr -outf sccache\sccache.exe https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2018-04-26-sccache-x86_64-pc-windows-msvc"
-      echo ##vso[task.prependpath]%CD%\sccache
-    displayName: Download and install sccache
-
-  # Note that this is originally from the github releases patch of Ninja
-  - script: |
-      REM md ninja
-      REM powershell -Command "iwr -outf 2017-03-15-ninja-win.zip https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2017-03-15-ninja-win.zip"
-      REM 7z x -oninja 2017-03-15-ninja-win.zip
-      REM del 2017-03-15-ninja-win.zip
-      set RUST_CONFIGURE_ARGS=%RUST_CONFIGURE_ARGS% --enable-ninja
-      echo ##vso[task.setvariable variable=RUST_CONFIGURE_ARGS]%RUST_CONFIGURE_ARGS%
-      echo ##vso[task.prependpath]%CD%\ninja
-    displayName: Download and install ninja
-  
-  - script: |
-      IF NOT "%DISABLE_DISK_SPACE_HACK%"=="1" (
-        IF NOT EXIST build (
-          mkdir c:\MORE_SPACE
-          mklink /J build c:\MORE_SPACE
-        )
-      )
-  - script: |
-      echo on
-      echo ##vso[task.setvariable variable=TAR_FOLDER_PATH]%TEMP%
-  - template: steps/show-environment-variables.yml
-  - task: DownloadPipelineArtifact@1
-    inputs:
-      artifactName: $(ARTIFACT_NAME)
-      downloadPath: $(TAR_FOLDER_PATH)
-  # - task: DownloadPipelineArtifact@1
-  #   inputs:
-  #     artifactName: $(ARTIFACT_NAME)
-  #     downloadPath: $(TAR_FOLDER_PATH)
-  #     buildType: specific
-  #     project: rust
-  #     pipeline: 8
-  #     buildVersionToDownload: specific
-  #     buildId: 200
-  #     # https://dev.azure.com/rust-lang-azure/rust/_build/results?buildId=145
-
-  # - template: steps/macos.yml 
-  - bash: $TAR_COMMAND -tvf $TEMP/drop.tar
-  - bash: $TAR_COMMAND --touch -xf $TEMP/drop.tar
-  - bash: rm $TEMP/drop.tar
-  - script: |
-      REM mkdir handle
-      REM powershell -Command "iwr -outf 2017-05-15-Handle.zip https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2017-05-15-Handle.zip"
-      REM 7z x -ohandle 2017-05-15-Handle.zip
-      REM del 2017-05-15-Handle.zip
-      set PATH=%PATH%;%CD%\handle
-      handle.exe -accepteula -help
-      echo ##vso[task.setvariable variable=PATH]%PATH%
-    displayName: Help debug handle issues
-  - script: |
-      REM echo force the specific VS version https://github.com/johnterickson/rust/issues/8
-      IF "%VCVARS_BAT%" NEQ "" ( 
-        CALL "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Auxiliary\Build\%VCVARS_BAT%"
-      )
-
-      where sccache
-      where rev
-      set | findstr /v SCCACHE_AZURE_CONNECTION_STRING
-
-      if not exist D:\cache\rustsrc\NUL mkdir D:\cache\rustsrc
-      
-      sh src/ci/run.sh
-    env:      
-      CI: true
-      CI_JOB_NAME: $(System.JobDisplayName)
-      SRC: .
-      NO_CCACHE: 1
-
-      # explicitly decrypt secret variables
-      # see https://docs.microsoft.com/en-us/azure/devops/pipelines/process/variables?view=azure-devops&tabs=yaml%2Cbatch
-      SCCACHE_AZURE_CONNECTION_STRING: $(SCCACHE_AZURE_CONNECTION_STRING_SECRET)
-      DOCKER_LAYER_CACHE_AZURE_STORAGE_ACCOUNT_KEY: $(DOCKER_LAYER_CACHE_AZURE_STORAGE_ACCOUNT_KEY_SECRET)
-    displayName: Run script
-  
-  strategy:
-    matrix:
-      # 32/64 bit MSVC tests
-      x86_64-msvc-A:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-A
-      x86_64-msvc-B:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-B
-      x86_64-msvc-C:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-C
-      x86_64-msvc-D:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-D
-      x86_64-msvc-E:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-E
-      x86_64-msvc-F:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-F
-      x86_64-msvc-G:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-G
-      x86_64-msvc-H:
-        MSYS_BITS: 64
-        RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-msvc --enable-profiler
-        ARTIFACT_NAME: x86_64-msvc-build
-        SCRIPT: make ci-resume-subset-H
-
-# macOS JOBS
-- job: macOS
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: gtar
-  pool:
-    vmImage: macos-10.13
-  steps:
-  - checkout: self
-    fetchDepth: 2
-  - template: steps/macos.yml  
-  strategy:
-    matrix:
-      x86_64-apple:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-
-- job: macOS_build
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: gtar
-  pool:
-    vmImage: macos-10.13
-  steps:
-  - checkout: self
-    fetchDepth: 2
-  - template: steps/macos.yml
-  - script: |
-      set -x
-
-      git submodule
-      export SUBMODULES_EXCLUDES=$(git submodule | grep -Eow 'src/[^ ]+' | sed 's/\(.*\)/--exclude=\1\/\.git/')
-      echo $SUBMODULES_EXCLUDES
-
-      $TAR_COMMAND --exclude=.git $SUBMODULES_EXCLUDES -cf /tmp/drop.tar .
-  - task: PublishPipelineArtifact@0
-    inputs:
-      artifactName: $(System.JobDisplayName)
-      targetPath: '/tmp/drop.tar'
-
-  strategy:
-    matrix:
-      # macOS builders. These are placed near the beginning because they are very
-      # slow to run.
-
-      # OSX builders running tests, these run the full test suite.
-      # NO_DEBUG_ASSERTIONS=1 to make them go faster, but also do have some
-      # runners that run `//ignore-debug` tests.
-      #
-      # Note that the compiler is compiled to target 10.8 here because the Xcode
-      # version that we're using, 8.2, cannot compile LLVM for OSX 10.7.
-      x86_64-apple-build:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        SCRIPT: make ci-test-prepare
-
-- job: macOS_test
-  dependsOn: macOS_build
-  timeoutInMinutes: 180
-  variables:
-    TAR_COMMAND: gtar
-    SKIP_PREP: 1
-    KEEP_STAGE: '--keep-stage 0 --keep-stage 1'
-    SKIP_LLVM_BUILD: 1
-  pool:
-    vmImage: macos-10.13
-  steps:
-  - checkout: self
-    fetchDepth: 2
-  - bash: brew install gnu-tar
-    displayName: install a tar that works well
-
-  - template: steps/show-disk-usage.yml
-
-  - task: DownloadPipelineArtifact@1
-    inputs:
-      artifactName: $(ARTIFACT_NAME)
-      downloadPath: $(System.DefaultWorkingDirectory)
-  # - task: DownloadPipelineArtifact@1
-  #   inputs:
-  #     artifactName: $(ARTIFACT_NAME)
-  #     downloadPath: $(System.DefaultWorkingDirectory)
-  #     buildType: specific
-  #     project: rust
-  #     pipeline: 8
-  #     buildVersionToDownload: specific
-  #     buildId: 200
-
-  # - template: steps/macos.yml 
-  - template: steps/show-disk-usage.yml
-  - bash: $TAR_COMMAND -tvf ./drop.tar
-  - bash: $TAR_COMMAND -xf ./drop.tar
-  - bash: rm ./drop.tar
-  - template: steps/show-disk-usage.yml
-  - bash: |
-      export PATH=$PATH:$HOME/.local/bin:$HOME/Library/Python/2.7/bin/
-      mkdir -p $HOME/rustsrc    
-      echo "##vso[task.setvariable variable=PATH;]$PATH"
-
-      curl -fo /usr/local/bin/sccache https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2018-04-02-sccache-x86_64-apple-darwin
-      chmod +x /usr/local/bin/sccache
-
-      curl -fo /usr/local/bin/stamp https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2017-03-17-stamp-x86_64-apple-darwin
-      chmod +x /usr/local/bin/stamp
-      
-      export CC=`pwd`/clang+llvm-7.0.0-x86_64-apple-darwin/bin/clang
-      echo "##vso[task.setvariable variable=CC]$CC"
-      
-      export CXX=`pwd`/clang+llvm-7.0.0-x86_64-apple-darwin/bin/clang++
-      echo "##vso[task.setvariable variable=CXX]$CXX"
-      
-      echo "##vso[task.setvariable variable=AR]ar"
-    displayName: Prep
-
-  - bash: brew install gnu-tar
-    displayName: install a tar that works well
-
-  - bash: |
-      brew update
-      brew install xz
-      brew install swig
-    condition: and(succeeded(), eq(variables['RUST_CHECK_TARGET'],'dist'))
-    displayName: Install xz and swigw
-
-  - bash: |
-      export RUN_SCRIPT="src/ci/run.sh"
-      echo "##vso[task.setvariable variable=RUN_SCRIPT]$RUN_SCRIPT"
-    displayName: Prepare run script (init and run)
-
-  - template: steps/show-environment-variables.yml
-
-  - template: steps/verify-publish-toolstate.yml
-
-  - template: steps/run-script.yml
-
-  strategy:
-    matrix:
-      # macOS builders. These are placed near the beginning because they are very
-      # slow to run.
-
-      # OSX builders running tests, these run the full test suite.
-      # NO_DEBUG_ASSERTIONS=1 to make them go faster, but also do have some
-      # runners that run `//ignore-debug` tests.
-      #
-      # Note that the compiler is compiled to target 10.8 here because the Xcode
-      # version that we're using, 8.2, cannot compile LLVM for OSX 10.7.
-      x86_64-apple-A:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-A
-      x86_64-apple-B:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-B
-      x86_64-apple-C:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-C
-      x86_64-apple-D:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-D
-      x86_64-apple-E:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-E
-      x86_64-apple-F:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-F
-      x86_64-apple-G:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-G
-      x86_64-apple-H:
-        RUST_CHECK_TARGET: check
-        RUST_CONFIGURE_ARGS: --build=x86_64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc
-        RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
-        MACOSX_DEPLOYMENT_TARGET: 10.8
-        MACOSX_STD_DEPLOYMENT_TARGET: 10.7
-        NO_LLVM_ASSERTIONS: 1
-        NO_DEBUG_ASSERTIONS: 1
-        ARTIFACT_NAME: x86_64-apple-build
-        SCRIPT: make ci-resume-subset-H
diff --git a/.azure-pipelines/auto.yml b/.azure-pipelines/auto.yml
index 189536cff5f..facc592422b 100644
--- a/.azure-pipelines/auto.yml
+++ b/.azure-pipelines/auto.yml
@@ -3,8 +3,8 @@
 # 
 
 pr: none
-# trigger:
-# - auto
+ trigger:
+ - auto
 
 variables:
 - group: caching
diff --git a/src/bootstrap/README.md b/src/bootstrap/README.md
index c47c0f765f0..1e01d68fb3a 100644
--- a/src/bootstrap/README.md
+++ b/src/bootstrap/README.md
@@ -39,7 +39,8 @@ The script accepts commands, flags, and arguments to determine what to do:
   ```
 
   If files are dirty that would normally be rebuilt from stage 0, that can be
-  overridden using `--keep-stage 0`.
+  overridden using `--keep-stage 0`. Using `--keep-stage n` will skip all steps
+  that belong to stage n or earlier:
 
   ```
   # keep old build products for stage 0 and build stage 1
diff --git a/src/bootstrap/mk/Makefile.in b/src/bootstrap/mk/Makefile.in
index 29b0cdaef63..ea05b30ecef 100644
--- a/src/bootstrap/mk/Makefile.in
+++ b/src/bootstrap/mk/Makefile.in
@@ -14,10 +14,9 @@ endif
 
 BOOTSTRAP := $(CFG_PYTHON) $(CFG_SRC_DIR)src/bootstrap/bootstrap.py
 
-build:
+all:
 	$(Q)$(BOOTSTRAP) build $(BOOTSTRAP_ARGS)
-
-all: build doc
+	$(Q)$(BOOTSTRAP) doc $(BOOTSTRAP_ARGS)
 
 help:
 	$(Q)echo 'Welcome to the rustbuild build system!'
@@ -81,75 +80,10 @@ TESTS_IN_2 := \
 	src/test/run-pass-fulldeps \
 	src/tools/linkchecker
 
-MIN_TEST := \
-	src/test/debuginfo
-
 ci-subset-1:
 	$(Q)$(BOOTSTRAP) test $(TESTS_IN_2:%=--exclude %)
 ci-subset-2:
 	$(Q)$(BOOTSTRAP) test $(TESTS_IN_2)
 
-ci-test-prepare: 
-	$(Q)$(BOOTSTRAP) test $(MIN_TEST)
-
-ci-resume-subset-1:
-	$(Q)$(BOOTSTRAP) test $(TESTS_IN_2:%=--exclude %)
-ci-resume-subset-2:
-	$(Q)$(BOOTSTRAP) test $(TESTS_IN_2)
-
-TESTS_IN_B := \
-	src/tools/linkchecker
-
-TESTS_IN_C := \
-	src/test/run-pass \
-	src/test/run-pass-fulldeps
-
-TESTS_IN_D := \
-	src/test/compile-fail \
-	src/test/rustdoc \
-	src/test/pretty
-
-TESTS_IN_E := \
-	src/test/ui 
-
-TESTS_IN_F := \
-	src/test/run-fail \
-	src/liballoc \
-	src/libcore
-
-TESTS_IN_G := \
-	src/tools/rustdoc \
-	src/test/rustdoc-js-std \
-	src/test/run-make-fulldeps \
-	src/libstd
-
-TESTS_IN_H := \
-	src/librustc_driver
-
-ci-resume-subset-A:
-	$(Q)$(BOOTSTRAP) test \
-		$(KEEP_STAGE) \
-		$(TESTS_IN_B:%=--exclude %) \
-		$(TESTS_IN_C:%=--exclude %) \
-		$(TESTS_IN_D:%=--exclude %) \
-		$(TESTS_IN_E:%=--exclude %) \
-		$(TESTS_IN_F:%=--exclude %) \
-		$(TESTS_IN_G:%=--exclude %) \
-		$(TESTS_IN_H:%=--exclude %) \
-		$(MIN_TEST:%=--exclude %) 
-ci-resume-subset-B:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_B)
-ci-resume-subset-C:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_C)
-ci-resume-subset-D:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_D)
-ci-resume-subset-E:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_E)
-ci-resume-subset-F:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_F)
-ci-resume-subset-G:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_G)
-ci-resume-subset-H:
-	$(Q)$(BOOTSTRAP) test $(KEEP_STAGE) $(TESTS_IN_H)
 
 .PHONY: dist
diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 62a8b7aad03..5777331b9bf 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -81,13 +81,6 @@ impl Step for Llvm {
             (info, "src/llvm-project/llvm", builder.llvm_out(target), dir.join("bin"))
         };
 
-        let build_llvm_config = llvm_config_ret_dir
-            .join(exe("llvm-config", &*builder.config.build));
-
-        if env::var_os("SKIP_LLVM_BUILD").is_some() {
-            return build_llvm_config
-        }
-
         if !llvm_info.is_git() {
             println!(
                 "git could not determine the LLVM submodule commit hash. \
@@ -95,6 +88,8 @@ impl Step for Llvm {
             );
         }
 
+        let build_llvm_config = llvm_config_ret_dir
+            .join(exe("llvm-config", &*builder.config.build));
         let done_stamp = out_dir.join("llvm-finished-building");
 
         if let Some(llvm_commit) = llvm_info.sha() {
diff --git a/src/ci/run.sh b/src/ci/run.sh
index 08ede122d65..a51c2da3cbd 100755
--- a/src/ci/run.sh
+++ b/src/ci/run.sh
@@ -90,25 +90,23 @@ if [ "$RUN_CHECK_WITH_PARALLEL_QUERIES" != "" ]; then
   rm -rf build
 fi
 
-if [ "$SKIP_PREP" != "1" ]; then
-  travis_fold start configure
-  travis_time_start
-  $SRC/configure $RUST_CONFIGURE_ARGS
-  travis_fold end configure
-  travis_time_finish
+travis_fold start configure
+travis_time_start
+$SRC/configure $RUST_CONFIGURE_ARGS
+travis_fold end configure
+travis_time_finish
 
-  travis_fold start make-prepare
-  travis_time_start
-  retry make prepare
-  travis_fold end make-prepare
-  travis_time_finish
+travis_fold start make-prepare
+travis_time_start
+retry make prepare
+travis_fold end make-prepare
+travis_time_finish
 
-  travis_fold start check-bootstrap
-  travis_time_start
-  make check-bootstrap
-  travis_fold end check-bootstrap
-  travis_time_finish
-fi
+travis_fold start check-bootstrap
+travis_time_start
+make check-bootstrap
+travis_fold end check-bootstrap
+travis_time_finish
 
 # Display the CPU and memory information. This helps us know why the CI timing
 # is fluctuating.