test_versions.yml

name: Tests (Versions)

on:
  push:
    branches:
    - master
    - "v0.1.x"
  pull_request: {}

env:
  # Disable incremental compilation.
  #
  # Incremental compilation is useful as part of an edit-build-test-edit cycle,
  # as it lets the compiler avoid recompiling code that hasn't changed. However,
  # on CI, we're not making small edits; we're almost always building the entire
  # project from scratch. Thus, incremental compilation on CI actually
  # introduces *additional* overhead to support making future builds
  # faster...but no future builds will ever occur in any given CI environment.
  #
  # See https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
  # for details.
  CARGO_INCREMENTAL: 0
  # Allow more retries for network requests in cargo (downloading crates) and
  # rustup (installing toolchains). This should help to reduce flaky CI failures
  # from transient network timeouts or other issues.
  CARGO_NET_RETRY: 10
  RUSTUP_MAX_RETRIES: 10
  # Don't emit giant backtraces in the CI logs.
  RUST_BACKTRACE: short

jobs:
  test-versions:
    # Test against the stable, beta, and nightly Rust toolchains on ubuntu-latest.
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust: [stable, beta, nightly]
      fail-fast: false
    steps:
    - uses: actions/checkout@main
    - uses: actions-rs/toolchain@v1
      with:
        toolchain: ${{ matrix.rust }}
        profile: minimal
        override: true
    - name: Run tests
      uses: actions-rs/cargo@v1
      with:
        command: test
        args: --all