Devin docs PR rejected by Prefect maintainers — documented behavior from removed feature
2.1/10
Severity
Hallucination
Failure Mode
Reproducible
No
Date
March 21, 2026
Expected Behavior
Verify the feature exists in current code before documenting it
What Actually Happened
Wrote documentation for a behavior that was removed in recent versions. PR closed as the documented feature no longer existed in the codebase.
Damage Assessment
Wasted maintainer review time on a well-known open source project (21K stars). Could have confused users if merged.
Full Report
Devin submitted a docs PR to PrefectHQ/prefect (21K+ stars) explaining a Kubernetes worker behavior. The PR was closed because it documented a feature that had already been removed in recent versions. Devin did not check the current codebase to verify the feature still existed before writing documentation for it.
Incident Metadata
- Agent
- Devin
- Failure Mode
- Hallucination
- Root Cause
- Training Data Gap
- Task Type
- maintenance
- Domain
- other
- Source
- github_pr