[aw-maintenance:failures-investigator] Failure report: github/gh-aw-actions (2026-09-03)

- **Target repository**: `github/gh-aw-actions`
- **Window**: last 24 hours (from 2026-09-03T02:48:55Z)
- **Failed agentic runs**: 3
- **Failure buckets**: 2 (P0: 1, P1: 0, P2: 0), plus 1 needing more evidence
- **Agentic workflows in repository**: 1

### Failure Buckets

| Severity | Workflow | Error signature | Runs | Tracking |
|---|---|---|---|---|
| P0 | Daily Runtime Threat Scan | `Blocked compile-agentic version: v0.83.1 is in the blocked versions list` (activation job, "Check compile-agentic version" step) | 2 | new issue |
| needs evidence | Daily Runtime Threat Scan | agent job failure ("Execute GitHub Copilot CLI" step) — truncated log tail only shows MCP gateway startup/tool registration, no explicit `##[error]` line captured | 1 | needs evidence |

### Resolved Buckets

none

Evidence

**Bucket 1 — Blocked compile-agentic version**
- Run: https://github.com/github/gh-aw-actions/actions/runs/33807348028 (2026-09-03T21:19:52Z) — job `activation` failed at step "Check compile-agentic version":
`##[error]Blocked compile-agentic version: v0.83.1 is in the blocked versions list. Update gh-aw to the latest version and recompile your workflow.`
- Run: https://github.com/github/gh-aw-actions/actions/runs/33802522237 (2026-09-03T20:29:07Z) — identical error, same step.
- Both runs pin `GH_AW_COMPILED_VERSION: v0.83.1`, which the activation step's version-compatibility check (fetched from `.github/aw/compat.json`) has flagged as blocked. This is a hard startup gate — every scheduled run of this workflow will keep failing at activation until the lock file is recompiled with a non-blocked `gh-aw` version.

**Bucket 2 — Agent job failure, insufficient evidence**
- Run: https://github.com/github/gh-aw-actions/actions/runs/33717072313 (2026-09-03T04:59:45Z) — job `agent` failed at step "Execute GitHub Copilot CLI". The captured 50-line log tail only shows MCP gateway/tool startup (github and safeoutputs servers connecting successfully, tool registration) and does not include an explicit `##[error]` line or exit code. The prefetch tail window likely missed the actual fault further down the step log. No root cause can be established from the available evidence.

### Next Steps

1. Recompile `.github/workflows/daily-runtime-threat-scan.lock.yml` (and any other workflows in this repository) with a `gh-aw` version that is not on the blocked list, per the guidance in the activation error, to unblock the P0 bucket.
2. Re-run or investigate run 33717072313 with full (untruncated) logs for the `agent` job to determine why "Execute GitHub Copilot CLI" failed; file a targeted fix issue once a concrete error signature is available.

### Control Plane
- Correlation ID: `33830504321-33`
- Central repository: `githubnext/gh-aw-cao`
- Control plane run URL: https://github.com/githubnext/gh-aw-cao/actions/runs/33830504321

> Generated by [:rotating_light: AW Maintenance / Failures](https://github.com/githubnext/gh-aw-cao/actions/runs/33830815295) · copilot · auto · 32.5 AIC · ⌖ 8.59 AIC · ⊞ 14.9K · [◷](https://github.com/search?q=repo%3Agithubnext%2Fgh-aw-cao+is%3Aissue+%22gh-aw-workflow-call-id%3A+githubnext%2Fgh-aw-cao%2Faw-failures-investigator%22&type=issues)
> - [x] expires on Sep 18, 2026, 2:53 AM UTC

Start with .github/workflows/daily-runtime-threat-scan.lock.yml and the activation error from runs 33807348028 and 33802522237. Recompile the lock file with a non-blocked gh-aw version, then inspect the full logs for run 33717072313 and its agent job. Done means the blocked-version failures are cleared and the remaining failure has a concrete error signature or targeted follow-up issue.

Written by the indexing model from the issue text.