petgraph 0.8.1

Graph data structure library. Provides graph types and graph algorithms.
Documentation 
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on:
  push:
    branches: [ master ]
  pull_request:
    branches: '*'
  merge_group:
    types: [ checks_requested ]
  workflow_dispatch: {} 

name: Continuous integration

env:
  CARGO_TERM_COLOR: always
  CARGO_INCREMENTAL: 0
  SCCACHE_GHA_ENABLED: "true"
  RUSTC_WRAPPER: "sccache"

jobs:
  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        include:
          - rust: 1.64.0  # MSRV
            required_features: std
          - rust: 1.81.0  # no_std MSRV
          - rust: stable
            features: unstable quickcheck rayon
            test_all: --all
          - rust: beta
            test_all: --all
          - rust: nightly
            features: unstable quickcheck rayon
            test_all: --all
            bench: true
    name: Tests (Rust ${{ matrix.rust }})

    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.7
      - id: toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
      - name: Configure default rust toolchain
        run: rustup override set ${{steps.toolchain.outputs.name}}

      - name: MSRV downgrade
        if: matrix.rust == '1.64.0'
        run: |
          cargo generate-lockfile
          cargo update -p hashbrown --precise 0.15.0
          cargo update -p once_cell --precise 1.20.3

      - name: Build with no features
        run: cargo build --verbose --no-default-features --features "${{ matrix.required_features }}"
      - name: Test with no features
        run: cargo test --verbose --no-default-features --features "${{ matrix.required_features }}"

      - name: Build with features "${{ matrix.features }}"
        run: cargo build --verbose --features "${{ matrix.features }}" --features "${{ matrix.required_features }}"
      - name: Test with features "${{ matrix.features }}"
        run: cargo test ${{ matrix.test_all }} --verbose --features "${{ matrix.features }}" --features "${{ matrix.required_features }}"

      - name: Build benchmarks
        if: ${{ matrix.bench }}
        run: |
          cargo bench --verbose --no-run
          cargo bench --verbose --no-run --all-features

  check:
    name: Lints
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.7
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy

      - name: Check formatting
        run: cargo fmt -- --check

      - name: Run clippy
        # The benchmarks target require nightly,
        # so we cannot use --all-targets here.
        run: |
          cargo clippy --all-features \
            --lib --bins --examples --tests \
            -- -D warnings

      - name: Build docs
        run: cargo doc --no-deps --all-features
        env:
          RUSTDOCFLAGS: "-Dwarnings"

  check-no-std:
    name: Check no_std
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.7
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy
          targets: wasm32v1-none

      - name: Check
        run: cargo check --no-default-features -p petgraph --target wasm32v1-none --features graphmap,serde-1,stable_graph,matrix_graph,generate,unstable

  miri:
    name: Unsoundness check
    if: github.event_name != 'merge_group'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.7
      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: miri
      - run: cargo miri test