cargo-fmt.yml

name: check formatting
on: [push, pull_request]
jobs:
  cargo-fmt:
    runs-on: ubuntu-latest
    steps:
      - name: git checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 1
      - name: cache rust toolchain
        uses: actions/cache@v3
        with:
          path: |
            ~/.rustup/toolchains
            ~/.rustup/update-hashes
            ~/.rustup/settings.toml
          key: ${{ runner.os }}-rust-toolchain-${{ hashFiles('rust-toolchain', 'rust-toolchain.toml') }}
      - name: cache rust crates
        uses: actions/cache@v3
        with:
          path: |
            ~/.cargo/bin/
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            target/
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
      - name: Check formatting
        run: cargo fmt --check