gh-run-failure

name	gh-run-failure
description	Use to analyze failures in GitHub pipelines or jobs.

<general_guidelines>

• Assume the gh tool is installed and configured.
• Avoid printing full logs; focus on the failing step.
• For large logs, prefer downloading artifacts.
• If a test case failed, specify which test and how to run it locally. </general_guidelines>

List recent runs

gh run list --limit 20 --json databaseId,createdAt,headBranch,event,conclusion,status,displayTitle \ --template '{{range .}}{{printf "%8v %-20s %-8s %-10s %-10s %s\n" .databaseId .createdAt .status .conclusion .event .displayTitle}}{{end}}'

Inspect a single run

RUN_ID=123456789 gh run view "$RUN_ID" --json status,conclusion,createdAt,headSha,headBranch,event,workflowName,url

Show only failed jobs or steps

gh run view "$RUN_ID" --json jobs --jq ' .jobs[] | select(.conclusion != "success") | .name as $job | (.steps[]? | select(.conclusion != "success") | "\($job) :: \(.name) :: \(.conclusion)")'

View failed jobs/steps output

gh run view "$RUN_ID" --log-failed

To focus on a specific job, first list them: gh run view "$RUN_ID" --json jobs --jq '.jobs[] | "(.databaseId)\t(.name)\t(.conclusion)"'

Then fetch that job's log: JOB_ID=987654321 gh run view "$RUN_ID" --job "$JOB_ID" --log

List artifacts from a run

gh run download "$RUN_ID" --list

Download a specific artifact

gh run download "$RUN_ID" --name "test-logs" --dir /tmp/github-run-"$RUN_ID"

After downloading, search locally for errors: rg -n "error|fail|exception" /tmp/github-run-"$RUN_ID"

Compare failed and latest successful run

Get latest successful run ID: BRANCH=main OK=$(gh run list --branch "$BRANCH" --limit 50 --json databaseId,conclusion
--jq '.[] | select(.conclusion=="success") | .databaseId' | head -n1) echo "$OK"

Diff their SHAs: FAIL_SHA=$(gh run view "$RUN_ID" --json headSha --jq .headSha) OK_SHA=$(gh run view "$OK" --json headSha --jq .headSha) gh api repos/:owner/:repo/compare/"$OK_SHA"..."$FAIL_SHA" --jq '.commits[].commit.message' | sed 's/^/- /'