Don't trigger filter_map_identity with an iterator from an empty array
#1651
Workflow file for this run
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| name: Lintcheck | |
| on: pull_request | |
| env: | |
| RUST_BACKTRACE: 1 | |
| CARGO_INCREMENTAL: 0 | |
| concurrency: | |
| # For a given workflow, if we push to the same PR, cancel all previous builds on that PR. | |
| group: "${{ github.workflow }}-${{ github.event.pull_request.number}}" | |
| cancel-in-progress: true | |
| jobs: | |
| # Runs lintcheck on the PR's target branch and stores the results as an artifact | |
| base: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 2 | |
| # HEAD is the generated merge commit `refs/pull/N/merge` between the PR and `master`, `HEAD^` | |
| # being the commit from `master` that is the base of the merge | |
| - name: Checkout base | |
| run: git checkout HEAD^ | |
| # Use the lintcheck from the PR to generate the JSON in case the PR modifies lintcheck in some | |
| # way | |
| - name: Checkout current lintcheck | |
| run: | | |
| rm -rf lintcheck | |
| git checkout ${{ github.sha }} -- lintcheck | |
| - name: Cache lintcheck bin | |
| id: cache-lintcheck-bin | |
| uses: actions/cache@v4 | |
| with: | |
| path: target/debug/lintcheck | |
| key: lintcheck-bin-${{ hashfiles('lintcheck/**') }} | |
| - name: Build lintcheck | |
| if: steps.cache-lintcheck-bin.outputs.cache-hit != 'true' | |
| run: cargo build --manifest-path=lintcheck/Cargo.toml | |
| - name: Create cache key | |
| id: key | |
| run: echo "key=lintcheck-base-${{ hashfiles('lintcheck/**') }}-$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT" | |
| - name: Cache results JSON | |
| id: cache-json | |
| uses: actions/cache@v4 | |
| with: | |
| path: lintcheck-logs/ci_crates_logs.json | |
| key: ${{ steps.key.outputs.key }} | |
| - name: Run lintcheck | |
| if: steps.cache-json.outputs.cache-hit != 'true' | |
| run: ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml | |
| - name: Upload base JSON | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: base | |
| path: lintcheck-logs/ci_crates_logs.json | |
| # Runs lintcheck on the PR and stores the results as an artifact | |
| head: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| - name: Cache lintcheck bin | |
| id: cache-lintcheck-bin | |
| uses: actions/cache@v4 | |
| with: | |
| path: target/debug/lintcheck | |
| key: lintcheck-bin-${{ hashfiles('lintcheck/**') }} | |
| - name: Build lintcheck | |
| if: steps.cache-lintcheck-bin.outputs.cache-hit != 'true' | |
| run: cargo build --manifest-path=lintcheck/Cargo.toml | |
| - name: Run lintcheck | |
| run: ./target/debug/lintcheck --format json --all-lints --crates-toml ./lintcheck/ci_crates.toml | |
| - name: Upload head JSON | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: head | |
| path: lintcheck-logs/ci_crates_logs.json | |
| # Retrieves the head and base JSON results and prints the diff to the GH actions step summary | |
| diff: | |
| runs-on: ubuntu-latest | |
| needs: [base, head] | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| - name: Restore lintcheck bin | |
| uses: actions/cache/restore@v4 | |
| with: | |
| path: target/debug/lintcheck | |
| key: lintcheck-bin-${{ hashfiles('lintcheck/**') }} | |
| fail-on-cache-miss: true | |
| - name: Download JSON | |
| uses: actions/download-artifact@v4 | |
| - name: Diff results | |
| # GH's summery has a maximum size of 1024k: | |
| # https://docs.github.com/actions/using-workflows/workflow-commands-for-github-actions#adding-a-markdown-summary | |
| # That's why we first log to file and then to the summary and logs | |
| run: | | |
| ./target/debug/lintcheck diff {base,head}/ci_crates_logs.json --truncate >> truncated_diff.md | |
| head -c 1024000 truncated_diff.md >> $GITHUB_STEP_SUMMARY | |
| cat truncated_diff.md | |
| ./target/debug/lintcheck diff {base,head}/ci_crates_logs.json >> full_diff.md | |
| - name: Upload full diff | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: diff | |
| if-no-files-found: ignore | |
| path: | | |
| full_diff.md | |
| truncated_diff.md |