Claude-skill-registry analyze-ci-failure-logs

Parse and analyze CI failure logs to identify root causes and error patterns. Use when CI builds fail to understand what broke.

install

source · Clone the upstream repo

git clone https://github.com/majiayu000/claude-skill-registry

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/analyze-ci-failure-logs" ~/.claude/skills/majiayu000-claude-skill-registry-analyze-ci-failure-logs && rm -rf "$T"

manifest: skills/data/analyze-ci-failure-logs/SKILL.md

Analyze CI Failure Logs

Parse CI failure logs to identify root causes and categorize errors.

When to Use

CI pipeline fails and you need to understand why
Analyzing test failure logs from GitHub Actions
Extracting error messages from build artifacts
Identifying patterns in recurring failures
Determining if failure is environmental or code-related

Quick Reference

# Download CI logs from artifact
gh run download <run-id> -D /tmp/ci-logs

# Extract from workflow run
gh run view <run-id> --log > /tmp/ci-output.log

# Grep for error patterns
grep -i "error\|failed\|panic\|exception" /tmp/ci-output.log

# Get summary of failures
tail -100 /tmp/ci-output.log | grep -A 5 "FAILED\|ERROR"

Workflow

Collect logs: Download CI artifacts or view workflow run output
Extract errors: Filter for error patterns (FAILED, ERROR, PANIC, exception)
Identify type: Categorize error (compilation, test, timeout, dependency, etc.)
Find root cause: Trace back to source (line numbers, stack traces)
Check context: Compare with recent changes in PR
Create summary: Report findings with actionable next steps

Log Analysis Patterns

Compilation Errors:

Look for:
```
error:
```
,
```
undefined
```
,
```
type mismatch
```
Check: Mojo syntax, imports, type annotations

Test Failures:

Look for:
```
FAILED
```
,
```
AssertionError
```
,
```
ValueError
```
Check: Test logic, expected vs actual values

Timeout Issues:

Look for:
```
timeout
```
,
```
timed out
```
,
```
hanging
```
Check: Long-running loops, infinite recursion

Dependency Issues:

Look for:
```
not found
```
,
```
import failed
```
,
```
version conflict
```
Check: Package versions, environment setup

Environmental Issues:

Look for:
```
permission denied
```
,
```
out of memory
```
,
```
disk full
```
Check: Resource limits, configuration

Output Format

Provide analysis with:

Error Category - Type of failure (compilation, test, timeout, dependency, environmental)
Root Cause - What line/code caused the failure
Context - Full error message and stack trace
Related Changes - Which PR changes might have caused it
Remediation - Recommended fix or investigation steps

Error Handling

Problem	Solution
Logs not accessible	Use `gh run view` to check permissions
Truncated logs	Download full artifact instead of view
Large log files	Use grep to extract relevant sections
Encoded artifacts	Unzip and decompress before analysis

References

GitHub Actions documentation: workflow logs and artifacts
CLAUDE.md: zero-warnings policy and standards
See fix-ci-failures skill for implementing fixes