CI workflow (actix/actix-web)

The CI workflow from actix/actix-web, explained and optimized by Latchkey.

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Source: actix/actix-web.github/workflows/ci.ymlLicense Apache-2.0View source

What it does

This is the CI workflow from the actix/actix-web repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

# This workflow is managed by gh actions-lock.

name: CI

on:
  pull_request:
    types: [opened, synchronize, reopened]
  merge_group:
    types: [checks_requested]
  push:
    branches: [main]

permissions:
  contents: read

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

jobs:
  read_msrv:
    name: Read MSRV
    uses: actions-rust-lang/msrv/.github/workflows/msrv.yml@b95a3a81b0efee6438b858b41a84aff627e01351 # v0.1.1

  build_and_test:
    needs: read_msrv

    strategy:
      fail-fast: false
      matrix:
        # prettier-ignore
        target:
          - { name: Linux, os: ubuntu-latest, triple: x86_64-unknown-linux-gnu }
          - { name: macOS, os: macos-latest, triple: x86_64-apple-darwin }
          - { name: Windows, os: windows-latest, triple: x86_64-pc-windows-msvc }
        version:
          - { name: msrv, version: "${{ needs.read_msrv.outputs.msrv }}" }
          - { name: stable, version: stable }

    name: ${{ matrix.target.name }} / ${{ matrix.version.name }}
    runs-on: ${{ matrix.target.os }}

    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Install nasm
        if: matrix.target.os == 'windows-latest'
        uses: ilammy/setup-nasm@72793074d3c8cdda771dba85f6deafe00623038b # v1.5.2

      - name: Install OpenSSL
        if: matrix.target.os == 'windows-latest'
        shell: bash
        run: |
          set -e
          choco install openssl --version=1.1.1.2100 -y --no-progress
          echo 'OPENSSL_DIR=C:\Program Files\OpenSSL' >> $GITHUB_ENV
          echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV

      - name: Setup mold linker
        if: matrix.target.os == 'ubuntu-latest'
        uses: rui314/setup-mold@9c9c13bf4c3f1adef0cc596abc155580bcb04444 # v1

      - name: Install Rust (${{ matrix.version.name }})
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: ${{ matrix.version.version }}

      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
        uses: taiki-e/install-action@bffeee26d4db9be238a4ea78d8826604ebcb594d # v2.82.5
        with:
          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean

      - name: workaround MSRV issues
        if: matrix.version.name == 'msrv'
        run: just downgrade-for-msrv

      - name: check minimal
        run: just check-min

      - name: check default
        run: just check-default

      - name: tests
        timeout-minutes: 30
        run: just test

      - name: CI cache clean
        run: cargo-ci-cache-clean

      - name: deny check
        if: matrix.version.name == 'stable' && matrix.target.os == 'ubuntu-latest'
        uses: EmbarkStudios/cargo-deny-action@bb137d7af7e4fb67e5f82a49c4fce4fad40782fe # v2.0.20

  io-uring:
    name: io-uring tests
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Install Rust
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: nightly

      - name: tests (io-uring)
        timeout-minutes: 30
        run: >
          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=stable cargo test --lib --tests -p=actix-files --all-features"

  rustdoc:
    name: doc tests
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Install Rust (nightly)
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: nightly

      - name: Install just
        uses: taiki-e/install-action@bffeee26d4db9be238a4ea78d8826604ebcb594d # v2.82.5
        with:
          tool: just

      - name: doc tests
        run: just test-docs

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

# This workflow is managed by gh actions-lock.
 
name: CI
 
on:
  pull_request:
    types: [opened, synchronize, reopened]
  merge_group:
    types: [checks_requested]
  push:
    branches: [main]
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  read_msrv:
    timeout-minutes: 30
    name: Read MSRV
    uses: actions-rust-lang/msrv/.github/workflows/msrv.yml@b95a3a81b0efee6438b858b41a84aff627e01351 # v0.1.1
 
  build_and_test:
    timeout-minutes: 30
    needs: read_msrv
 
    strategy:
      fail-fast: false
      matrix:
        # prettier-ignore
        target:
          - { name: Linux, os: ubuntu-latest, triple: x86_64-unknown-linux-gnu }
          - { name: macOS, os: macos-latest, triple: x86_64-apple-darwin }
          - { name: Windows, os: windows-latest, triple: x86_64-pc-windows-msvc }
        version:
          - { name: msrv, version: "${{ needs.read_msrv.outputs.msrv }}" }
          - { name: stable, version: stable }
 
    name: ${{ matrix.target.name }} / ${{ matrix.version.name }}
    runs-on: ${{ matrix.target.os }}
 
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
 
      - name: Install nasm
        if: matrix.target.os == 'windows-latest'
        uses: ilammy/setup-nasm@72793074d3c8cdda771dba85f6deafe00623038b # v1.5.2
 
      - name: Install OpenSSL
        if: matrix.target.os == 'windows-latest'
        shell: bash
        run: |
          set -e
          choco install openssl --version=1.1.1.2100 -y --no-progress
          echo 'OPENSSL_DIR=C:\Program Files\OpenSSL' >> $GITHUB_ENV
          echo "RUSTFLAGS=-C target-feature=+crt-static" >> $GITHUB_ENV
 
      - name: Setup mold linker
        if: matrix.target.os == 'ubuntu-latest'
        uses: rui314/setup-mold@9c9c13bf4c3f1adef0cc596abc155580bcb04444 # v1
 
      - name: Install Rust (${{ matrix.version.name }})
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: ${{ matrix.version.version }}
 
      - name: Install just, cargo-hack, cargo-nextest, cargo-ci-cache-clean
        uses: taiki-e/install-action@bffeee26d4db9be238a4ea78d8826604ebcb594d # v2.82.5
        with:
          tool: just,cargo-hack,cargo-nextest,cargo-ci-cache-clean
 
      - name: workaround MSRV issues
        if: matrix.version.name == 'msrv'
        run: just downgrade-for-msrv
 
      - name: check minimal
        run: just check-min
 
      - name: check default
        run: just check-default
 
      - name: tests
        timeout-minutes: 30
        run: just test
 
      - name: CI cache clean
        run: cargo-ci-cache-clean
 
      - name: deny check
        if: matrix.version.name == 'stable' && matrix.target.os == 'ubuntu-latest'
        uses: EmbarkStudios/cargo-deny-action@bb137d7af7e4fb67e5f82a49c4fce4fad40782fe # v2.0.20
 
  io-uring:
    timeout-minutes: 30
    name: io-uring tests
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
 
      - name: Install Rust
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: nightly
 
      - name: tests (io-uring)
        timeout-minutes: 30
        run: >
          sudo bash -c "ulimit -Sl 512 && ulimit -Hl 512 && PATH=$PATH:/usr/share/rust/.cargo/bin && RUSTUP_TOOLCHAIN=stable cargo test --lib --tests -p=actix-files --all-features"
 
  rustdoc:
    timeout-minutes: 30
    name: doc tests
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
 
      - name: Install Rust (nightly)
        uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
        with:
          toolchain: nightly
 
      - name: Install just
        uses: taiki-e/install-action@bffeee26d4db9be238a4ea78d8826604ebcb594d # v2.82.5
        with:
          tool: just
 
      - name: doc tests
        run: just test-docs

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs

This workflow runs 4 jobs (9 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout