negative 0.1.2

Negative impls in stable Rust
Documentation 
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name: CI

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  push:
    branches:
      - master
  pull_request:

jobs:
  # == CHECK == #
  check:
    name: "Check beta stable and MSRV=1.56.0"
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust-toolchain:
          - 1.56.0
          - stable
          # Try to guard against a near-future regression.
          - beta
        cargo-locked: ['', '--locked']
        # feature-xxx: ['', '--features xxx']
        exclude:
          # MSRV guarantee only stands for `.lock`-tested dependencies.
          - rust-toolchain: 1.56.0
            cargo-locked: ''
    steps:
      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust-toolchain }}
        id: installed_toolchain

      - name: Override toolchain just in case.
        run: rustup override set ${{ steps.installed_toolchain.outputs.name }}

      - name: Clone repo
        uses: actions/checkout@v4

      - name: Update `Cargo.lock`
        if: matrix.cargo-locked != '--locked'
        run: cargo update -v

      - name: Cargo check
        run: cargo check ${{ matrix.cargo-locked }}

  # == TEST == #
  test:
    name: "Run tests"
    runs-on: ${{ matrix.os }}
    needs: []
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
          - windows-latest
        rust-toolchain:
          - 1.56.0
          - stable
    steps:
      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust-toolchain }}
        id: installed_toolchain

      - name: Override toolchain just in case.
        run: rustup override set ${{ steps.installed_toolchain.outputs.name }}

      - name: Clone repo
        uses: actions/checkout@v4

      - run: cargo test --lib --tests

      - run: cargo test --doc --features docs-rs -- --nocapture
        if: matrix.rust-toolchain != '1.56.0'
        env:
          RUSTC_BOOTSTRAP: 1

  # == UI TESTS ==
  ui-test:
    name: UI Tests
    runs-on: ubuntu-latest
    needs: [check]
    steps:
      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        id: installed_toolchain

      - name: Override toolchain just in case.
        run: rustup override set ${{ steps.installed_toolchain.outputs.name }}

      - name: Clone repo
        uses: actions/checkout@v4

      # - name: Cargo UI test
      #   run: cargo test-ui
      #   env:
      #     RUSTC_BOOTSTRAP: 1
      #   with:
      #     command: test-ui

  required-jobs:
    name: 'All the required jobs'
    needs:
      - check
      - test
    runs-on: ubuntu-latest
    if: ${{ always() }}
    steps:
      - name: 'Check success of the required jobs'
        run: |
          RESULT=$(echo "${{ join(needs.*.result, '') }}" | sed -e "s/success//g")
          if [ -n "$RESULT" ]; then
            echo "❌"
            false
          fi
          echo "✅"