Merge branch 'rust-lang:master' into stabilise_os_string_pathbuf_leak

Author: its-the-shrimp

.editorconfig

@@ -9,6 +9,8 @@ end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
+
+[!src/llvm-project]
 indent_style = space
 indent_size = 4
 

.git-blame-ignore-revs

@@ -29,3 +29,5 @@ ec2cc761bc7067712ecc7734502f703fe3b024c8
 99cb0c6bc399fb94a0ddde7e9b38e9c00d523bad
 # reformat with rustfmt edition 2024
 c682aa162b0d41e21cc6748f4fecfe01efb69d1f
+# reformat with updated edition 2024
+1fcae03369abb4c2cc180cd5a49e1f4440a81300

.github/ISSUE_TEMPLATE/blank_issue.md

@@ -0,0 +1,70 @@
+---
+name: Bootstrap (Rust Build System) Report
+about: Issues encountered on bootstrap build system
+labels: C-bug, T-bootstrap
+---
+
+<!--
+Thank you for submitting a bootstrap report! Please provide detailed information to help us reproduce and diagnose the issue.
+-->
+
+### Summary
+
+<!--
+Provide a brief description of the problem you are experiencing.
+-->
+
+### Command used
+
+```sh
+<command>
+```
+
+### Expected behaviour
+
+<!--
+Describe what you expected to happen.
+-->
+
+### Actual behaviour
+
+<!--
+Describe what actually happened.
+-->
+
+### Bootstrap configuration (config.toml)
+```toml
+<config>
+```
+
+### Operating system
+
+<!--
+e.g., Ubuntu 22.04, macOS 12, Windows 10
+-->
+
+### HEAD
+
+<!--
+Output of `git rev-parse HEAD` command, or content of the `git-commit-hash` file if using a tarball source.
+-->
+
+### Additional context
+<!--
+Include any other relevant information (e.g., if you have custom patches or modifications on the project).
+-->
+
+
+<!--
+Include the complete build log in the section below.
+Enable backtrace and verbose mode if possible for more detailed information e.g., with `RUST_BACKTRACE=1 ./x build -v`.
+-->
+<details><summary>Build Log</summary>
+<p>
+
+```txt
+<log>
+```
+
+</p>
+</details>

.github/ISSUE_TEMPLATE/bootstrap.md

@@ -46,7 +46,7 @@ for larger features an implementation could be broken up into multiple PRs.
 
 [stabilization-guide]: https://rustc-dev-guide.rust-lang.org/stabilization_guide.html#stabilization-pr
 [doc-guide]: https://rustc-dev-guide.rust-lang.org/stabilization_guide.html#documentation-prs
-[nightly-style-procedure]: https://github.com/rust-lang/style-team/blob/master/nightly-style-procedure.md 
+[nightly-style-procedure]: https://github.com/rust-lang/style-team/blob/main/nightly-style-procedure.md 
 [Style Guide]: https://github.com/rust-lang/rust/tree/master/src/doc/style-guide
 
 ### Unresolved Questions

.github/ISSUE_TEMPLATE/tracking_issue.md

@@ -7,6 +7,6 @@ tracking issue or there are none, feel free to ignore this.
 This PR will get automatically assigned to a reviewer. In case you would like
 a specific user to review your work, you can assign it to them by using
 
-    r​? <reviewer name>
+    r? <reviewer name>
 -->
 <!-- homu-ignore:end -->

.github/pull_request_template.md

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  // Let Renovatebot keep an opened issue that tracks our dependencies
+  "dependencyDashboard": true,
+  // Disable "normal" package updates
+  "enabledManagers": [],
+  // Update lockfiles once per week
+  "lockFileMaintenance": {
+    "enabled": true,
+    "schedule": [
+      "before 5am on Tuesday"
+    ]
+  }
+}

.github/renovate.json5

@@ -1,8 +1,8 @@
 # This file defines our primary CI workflow that runs on pull requests
 # and also on pushes to special branches (auto, try).
 #
-# The actual definition of the executed jobs is calculated by a Python
-# script located at src/ci/github-actions/calculate-job-matrix.py, which
+# The actual definition of the executed jobs is calculated by the
+# `src/ci/citool` crate, which
 # uses job definition data from src/ci/github-actions/jobs.yml.
 # You should primarily modify the `jobs.yml` file if you want to modify
 # what jobs are executed in CI.
@@ -46,7 +46,7 @@ jobs:
   # If you want to modify CI jobs, take a look at src/ci/github-actions/jobs.yml.
   calculate_matrix:
     name: Calculate job matrix
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     outputs:
       jobs: ${{ steps.jobs.outputs.jobs }}
       run_type: ${{ steps.jobs.outputs.run_type }}
@@ -56,46 +56,31 @@ jobs:
       - name: Calculate the CI job matrix
         env:
           COMMIT_MESSAGE: ${{ github.event.head_commit.message }}
-        run: python3 src/ci/github-actions/calculate-job-matrix.py >> $GITHUB_OUTPUT
+        run: |
+          cd src/ci/citool
+          cargo test
+          cargo run calculate-job-matrix >> $GITHUB_OUTPUT
         id: jobs
   job:
-    name: ${{ matrix.name }}
+    name: ${{ matrix.full_name }}
     needs: [ calculate_matrix ]
     runs-on: "${{ matrix.os }}"
-    defaults:
-      run:
-        shell: ${{ contains(matrix.os, 'windows') && 'msys2 {0}' || 'bash' }}
-    timeout-minutes: 240
+    timeout-minutes: 360
     env:
-      CI_JOB_NAME: ${{ matrix.image }}
+      CI_JOB_NAME: ${{ matrix.name }}
       CARGO_REGISTRIES_CRATES_IO_PROTOCOL: sparse
       # commit of PR sha or commit sha. `GITHUB_SHA` is not accurate for PRs.
       HEAD_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
       DOCKER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       SCCACHE_BUCKET: rust-lang-ci-sccache2
+      SCCACHE_REGION: us-west-1
       CACHE_DOMAIN: ci-caches.rust-lang.org
     continue-on-error: ${{ matrix.continue_on_error || false }}
     strategy:
       matrix:
         # Check the `calculate_matrix` job to see how is the matrix defined.
         include: ${{ fromJSON(needs.calculate_matrix.outputs.jobs) }}
     steps:
-      - if: contains(matrix.os, 'windows')
-        uses: msys2/setup-msys2@v2.22.0
-        with:
-          # i686 jobs use mingw32. x86_64 and cross-compile jobs use mingw64.
-          msystem: ${{ contains(matrix.name, 'i686') && 'mingw32' || 'mingw64' }}
-          # don't try to download updates for already installed packages
-          update: false
-          # don't try to use the msys that comes built-in to the github runner,
-          # so we can control what is installed (i.e. not python)
-          release: true
-          # Inherit the full path from the Windows environment, with MSYS2's */bin/
-          # dirs placed in front. This lets us run Windows-native Python etc.
-          path-type: inherit
-          install: >
-            make
-
       - name: disable git crlf conversion
         run: git config --global core.autocrlf false
 
@@ -104,6 +89,14 @@ jobs:
         with:
           fetch-depth: 2
 
+      # Free up disk space on Linux by removing preinstalled components that
+      # we do not need. We do this to enable some of the less resource
+      # intensive jobs to run on free runners, which however also have
+      # less disk space.
+      - name: free up disk space
+        run: src/ci/scripts/free-disk-space.sh
+        if: matrix.free_disk
+
       # Rust Log Analyzer can't currently detect the PR number of a GitHub
       # Actions build on its own, so a hint in the log message is needed to
       # point it in the right direction.
@@ -122,6 +115,9 @@ jobs:
           # which then uses log commands to actually set them.
           EXTRA_VARIABLES: ${{ toJson(matrix.env) }}
 
+      - name: setup upstream remote
+        run: src/ci/scripts/setup-upstream-remote.sh
+
       - name: ensure the channel matches the target branch
         run: src/ci/scripts/verify-channel.sh
 
@@ -181,6 +177,11 @@ jobs:
       - name: ensure the stable version number is correct
         run: src/ci/scripts/verify-stable-version-number.sh
 
+      # Show the environment just before we run the build
+      # This makes it easier to diagnose problems with the above install scripts.
+      - name: show the current environment
+        run: src/ci/scripts/dump-environment.sh
+
       - name: run the build
         # Redirect stderr to stdout to avoid reordering the two streams in the GHA logs.
         run: src/ci/scripts/run-build-from-ci.sh 2>&1
@@ -191,6 +192,11 @@ jobs:
       - name: create github artifacts
         run: src/ci/scripts/create-doc-artifacts.sh
 
+      - name: print disk usage
+        run: |
+          echo "disk usage:"
+          df -h
+
       - name: upload artifacts to github
         uses: actions/upload-artifact@v4
         with:
@@ -212,11 +218,22 @@ jobs:
         # erroring about invalid credentials instead.
         if: github.event_name == 'push' || env.DEPLOY == '1' || env.DEPLOY_ALT == '1'
 
+      - name: upload job metrics to DataDog
+        if: needs.calculate_matrix.outputs.run_type != 'pr'
+        env:
+          DATADOG_SITE: datadoghq.com
+          DATADOG_API_KEY: ${{ secrets.DATADOG_API_KEY }}
+          DD_GITHUB_JOB_NAME: ${{ matrix.full_name }}
+        run: |
+          cd src/ci
+          npm ci
+          python3 scripts/upload-build-metrics.py ../../build/cpu-usage.csv
+
   # This job isused to tell bors the final status of the build, as there is no practical way to detect
   # when a workflow is successful listening to webhooks only in our current bors implementation (homu).
   outcome:
     name: bors build finished
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     needs: [ calculate_matrix, job ]
     # !cancelled() executes the job regardless of whether the previous jobs passed or failed
     if: ${{ !cancelled() && contains(fromJSON('["auto", "try"]'), needs.calculate_matrix.outputs.run_type) }}

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
   not-waiting-on-bors:
     if: github.repository_owner == 'rust-lang'
     name: skip if S-waiting-on-bors
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -47,7 +47,7 @@ jobs:
     if: github.repository_owner == 'rust-lang'
     name: update dependencies
     needs: not-waiting-on-bors
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     steps:
       - name: checkout the source code
         uses: actions/checkout@v4
@@ -61,9 +61,11 @@ jobs:
           rustup toolchain install --no-self-update --profile minimal $TOOLCHAIN
           rustup default $TOOLCHAIN
 
-      - name: cargo update
+      - name: cargo update compiler & tools
         # Remove first line that always just says "Updating crates.io index"
-        run: cargo update 2>&1 | sed '/crates.io index/d' | tee -a cargo_update.log
+        run: |
+          echo -e "\ncompiler & tools dependencies:" >> cargo_update.log
+          cargo update 2>&1 | sed '/crates.io index/d' | tee -a cargo_update.log
       - name: cargo update library
         run: |
           echo -e "\nlibrary dependencies:" >> cargo_update.log
@@ -92,7 +94,7 @@ jobs:
     if: github.repository_owner == 'rust-lang'
     name: amend PR
     needs: update
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
       pull-requests: write

.github/workflows/dependencies.yml

@@ -0,0 +1,68 @@
+# Mirror DockerHub images used by the Rust project to ghcr.io.
+# Images are available at https://github.com/orgs/rust-lang/packages.
+#
+# In some CI jobs, we pull images from ghcr.io instead of Docker Hub because
+# Docker Hub has a rate limit, while ghcr.io doesn't.
+# Those images are pushed to ghcr.io by this job.
+#
+# Note that authenticating to DockerHub or other registries isn't possible
+# for PR jobs, because forks can't access secrets.
+# That's why we use ghcr.io: it has no rate limit and it doesn't require authentication.
+
+name: GHCR image mirroring
+
+on:
+  workflow_dispatch:
+  schedule:
+    # Run daily at midnight UTC
+    - cron: '0 0 * * *'
+
+jobs:
+  mirror:
+    name: DockerHub mirror
+    runs-on: ubuntu-24.04
+    if: github.repository == 'rust-lang/rust'
+    permissions:
+      # Needed to write to the ghcr.io registry
+      packages: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Log in to registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.repository_owner }} --password-stdin
+
+      # Download crane in the current directory.
+      # We use crane because it copies the docker image for all the architectures available in
+      # DockerHub for the image.
+      # Learn more about crane at
+      # https://github.com/google/go-containerregistry/blob/main/cmd/crane/README.md
+      - name: Download crane
+        run: |
+          curl -sL "https://github.com/google/go-containerregistry/releases/download/${VERSION}/go-containerregistry_${OS}_${ARCH}.tar.gz" | tar -xzf -
+        env:
+          VERSION: v0.20.2
+          OS: Linux
+          ARCH: x86_64
+
+      - name: Mirror DockerHub
+        run: |
+          # List of DockerHub images to mirror to ghcr.io
+          images=(
+            # Mirrored because used by the mingw-check-tidy, which doesn't cache Docker images
+            "ubuntu:22.04"
+            # Mirrored because used by all linux CI jobs, including mingw-check-tidy
+            "moby/buildkit:buildx-stable-1"
+          )
+
+          # Mirror each image from DockerHub to ghcr.io
+          for img in "${images[@]}"; do
+            echo "Mirroring ${img}..."
+            # Remove namespace from the image if any.
+            # E.g. "moby/buildkit:buildx-stable-1" becomes "buildkit:buildx-stable-1"
+            dest_image=$(echo "${img}" | cut -d'/' -f2-)
+            ./crane copy \
+              "docker.io/${img}" \
+              "ghcr.io/${{ github.repository_owner }}/${dest_image}"
+          done