Where the minutes go (30d)
Waste detected
Biggest wins first, each with the exact config fix.
No concurrency control · Coverage
Add a `concurrency:` block keyed on branch to cancel superseded runs when devs push twice quickly.
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: trueMissing dependency cache · release
Add `Swatinem/rust-cache@v2` (the de-facto cargo cache), or an `actions/cache@v4` step keyed on `Cargo.lock`.
- uses: Swatinem/rust-cache@v2No concurrency control · rustdoc
Add a `concurrency:` block keyed on branch to cancel superseded runs when devs push twice quickly.
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: trueNo concurrency control · metrics
Add a `concurrency:` block keyed on branch to cancel superseded runs when devs push twice quickly.
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: trueAlso found: 16 more config fixes with negligible recoverable minutes: timeouts, retention, path filters
No path filters on triggers · CI
Runs on every push/PR with no `paths:` filter, so docs-only changes still trigger full CI. Add a `paths:` filter if that's common.
on:
pull_request:
paths:
- 'src/**'
- 'package.json'Premium runners (macOS / Windows) · CI
macOS bills ~10x and Windows ~2x a Linux minute. The cost estimate above assumes Linux, so your real spend is higher. Move any job that doesn't need them to `ubuntu-latest`.
jobs:
build:
runs-on: ubuntu-latest # ~10x cheaper than macos-latestSystem packages reinstalled every run · CI
System packages install from the network on every run with no cache. Cache them (cache-apt-pkgs-action) or check whether the runner image already has the tool.
- uses: awalsh128/cache-apt-pkgs-action@latest
with:
packages: <your packages>
version: 1.0Third-party actions pinned to a mutable ref · CI
2 third-party actions pinned to a branch or other mutable ref, which can change under you (supply-chain risk, non-reproducible builds). Pin to a full commit SHA instead.
uses: taiki-e/install-action@<full-sha> # was @nextestNo job timeout · Coverage
No job sets `timeout-minutes`, so a hung step can run to GitHub's 6-hour default. Add `timeout-minutes` to each job.
jobs:
build:
runs-on: ubuntu-latest
timeout-minutes: 15No path filters on triggers · Coverage
Runs on every push/PR with no `paths:` filter, so docs-only changes still trigger full CI. Add a `paths:` filter if that's common.
on:
pull_request:
paths:
- 'src/**'
- 'package.json'Third-party actions pinned to a mutable ref · Coverage
2 third-party actions pinned to a branch or other mutable ref, which can change under you (supply-chain risk, non-reproducible builds). Pin to a full commit SHA instead.
uses: taiki-e/install-action@<full-sha> # was @cargo-llvm-covNo job timeout · metrics
No job sets `timeout-minutes`, so a hung step can run to GitHub's 6-hour default. Add `timeout-minutes` to each job.
jobs:
build:
runs-on: ubuntu-latest
timeout-minutes: 15Artifacts at default retention · metrics
`upload-artifact` has no `retention-days`, so artifacts keep up to 90 days (storage cost). Set e.g. `retention-days: 7`.
- uses: actions/upload-artifact@v4
with:
name: build
path: dist/
retention-days: 7Write-only cache (never restored) · metrics
An `actions/cache` key includes the commit SHA with no `restore-keys`, so every run writes an entry no later run can restore. Key on your lockfile hash and add a `restore-keys` prefix.
- uses: actions/cache@v4
with:
path: <cache dir>
key: deps-${{ runner.os }}-${{ hashFiles('**/<lockfile>') }}
restore-keys: |
deps-${{ runner.os }}-Artifacts at default retention · release
`upload-artifact` has no `retention-days`, so artifacts keep up to 90 days (storage cost). Set e.g. `retention-days: 7`.
- uses: actions/upload-artifact@v4
with:
name: build
path: dist/
retention-days: 7Premium runners (macOS / Windows) · release
macOS bills ~10x and Windows ~2x a Linux minute. The cost estimate above assumes Linux, so your real spend is higher. Move any job that doesn't need them to `ubuntu-latest`.
jobs:
build:
runs-on: ubuntu-latest # ~10x cheaper than macos-latestScheduled at the top of the hour · release
The schedule fires at minute :00, GitHub's peak window, where scheduled runs get delayed or skipped. Shift to any other minute for the same cadence with less contention.
on:
schedule:
- cron: '48 0 * * *' # was '0 0 * * *' — any non-:00 minute avoids the herdSystem packages reinstalled every run · release
System packages install from the network on every run with no cache. Cache them (cache-apt-pkgs-action) or check whether the runner image already has the tool.
- uses: awalsh128/cache-apt-pkgs-action@latest
with:
packages: <your packages>
version: 1.0No job timeout · rustdoc
No job sets `timeout-minutes`, so a hung step can run to GitHub's 6-hour default. Add `timeout-minutes` to each job.
jobs:
build:
runs-on: ubuntu-latest
timeout-minutes: 15No path filters on triggers · rustdoc
Runs on every push/PR with no `paths:` filter, so docs-only changes still trigger full CI. Add a `paths:` filter if that's common.
on:
pull_request:
paths:
- 'src/**'
- 'package.json'Copy every fix as one block (11 snippets, annotated per workflow)
# No concurrency control (applies to: Coverage, rustdoc, metrics)
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
# Missing dependency cache (cargo) (applies to: release)
- uses: Swatinem/rust-cache@v2
# No path filters on triggers (applies to: CI, Coverage, rustdoc)
on:
pull_request:
paths:
- 'src/**'
- 'package.json'
# Premium runners (macOS / Windows) (applies to: CI, release)
jobs:
build:
runs-on: ubuntu-latest # ~10x cheaper than macos-latest
# System packages reinstalled every run (applies to: CI, release)
- uses: awalsh128/cache-apt-pkgs-action@latest
with:
packages: <your packages>
version: 1.0
# Third-party actions pinned to a mutable ref (applies to: CI)
uses: taiki-e/install-action@<full-sha> # was @nextest
# No job timeout (applies to: Coverage, metrics, rustdoc)
jobs:
build:
runs-on: ubuntu-latest
timeout-minutes: 15
# Third-party actions pinned to a mutable ref (applies to: Coverage)
uses: taiki-e/install-action@<full-sha> # was @cargo-llvm-cov
# Artifacts at default retention (applies to: metrics, release)
- uses: actions/upload-artifact@v4
with:
name: build
path: dist/
retention-days: 7
# Write-only cache (never restored) (applies to: metrics)
- uses: actions/cache@v4
with:
path: <cache dir>
key: deps-${{ runner.os }}-${{ hashFiles('**/<lockfile>') }}
restore-keys: |
deps-${{ runner.os }}-
# Scheduled at the top of the hour (applies to: release)
on:
schedule:
- cron: '48 0 * * *' # was '0 0 * * *' — any non-:00 minute avoids the herdEach snippet is representative. Merge into the named workflow files rather than pasting wholesale.
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