rustc-build-sysroot 0.5.13

Build a rustc sysroot with custom flags
Documentation 
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name: CI

on:
  pull_request:
  push:
    branches: ['master']

env:
  # GHA enables the sparse registry by default; make sure that also works for older nightlies.
  CARGO_UNSTABLE_SPARSE_REGISTRY: 'true'

jobs:
  test:
    name: Test Suite
    strategy:
      fail-fast: false
      matrix:
        rust:
          - nightly
          # Check a ~3 months old nightly as "oldest supported version"
          - nightly-2026-01-01
        # We want to run all of the above on Linux, macOS, windows-msvc, windows-gnu.
        # The semantics of combining `include` with other things in GHA are very strange
        # so this seems like the best way of doing that.
        os:
          - linux
          - macos
          - windows-gnu
          - windows-msvc
        include:
          - os: linux
            runs-on: ubuntu-latest
            target: x86_64-unknown-linux-gnu
          - os: macos
            runs-on: macos-latest
            target: aarch64-apple-darwin
          - os: windows-msvc
            runs-on: windows-latest
            target: x86_64-pc-windows-msvc
          - os: windows-gnu
            runs-on: windows-latest
            target: x86_64-pc-windows-gnu
    runs-on: ${{ matrix.runs-on }}
    steps:
      - uses: actions/checkout@v5
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
          targets: ${{ matrix.target }}
          components: rust-src
      - name: Run tests
        run: cargo test --locked --target ${{ matrix.target }}

  build-dir-new-layout:
    name: Test Suite (build-dir-new-layout)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: nightly
          components: rust-src
      - name: Run tests
        run: CARGO_UNSTABLE_BUILD_DIR_NEW_LAYOUT=true cargo test --locked

  check:
    name: Checks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v5
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: 1.86.0
          components: rustfmt, clippy
      - name: rustfmt
        run: cargo fmt --check
      - name: clippy
        run: cargo clippy --all-targets -- -D warnings