[aw-maintenance:failures-investigator] Failure report — github/gh-aw-actions (24h window)

- **Target repository**: `github/gh-aw-actions`
- **Window**: last 24 hours (from 2026-09-02T23:43:03Z)
- **Failed agentic runs**: 3
- **Failure buckets**: 2 (P0: 1, P1: 0, P2: 1)
- **Agentic workflows in repository**: 1

### Failure Buckets

| Severity | Workflow | Error signature | Runs | Tracking |
|---|---|---|---|---|
| P0 | Daily Runtime Threat Scan | `##[error]Blocked compile-agentic version: v0.83.1 is in the blocked versions list` (activation job, step "Check compile-agentic version") | 2 | new issue |
| P2 | Daily Runtime Threat Scan | `agent` job failed at step "Execute GitHub Copilot CLI"; truncated log ends mid-startup (MCP gateway/WASM guard init) with 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 (created 2026-09-03T21:19:52Z)
- Run: https://github.com/github/gh-aw-actions/actions/runs/33802522237 (created 2026-09-03T20:29:07Z)
- Failed job: `activation`, step: "Check compile-agentic version"
- Log excerpt: `Checking compile-agentic version: v0.83.1` → `Fetching update configuration from: https://raw.githubusercontent.com/github/gh-aw-actions/main/.github/aw/compat.json` → `##[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.`
- Both runs use `GH_AW_COMPILED_VERSION: v0.83.1` and fail identically, indicating this is not transient — every run compiled against this pinned version fails at activation until the version is updated.

**Bucket 2 — Agent job failure, insufficient evidence**
- Run: https://github.com/github/gh-aw-actions/actions/runs/33717072313 (created 2026-09-03T04:59:45Z)
- Failed job: `agent`, step: "Execute GitHub Copilot CLI"
- Available tail log only shows normal MCP backend/gateway startup (safeoutputs tools registered, MCP servers connected: github, safeoutputs; "All checks passed") and cuts off during `stderr.log` output at "Auto-detected baked-in WASM guards at /guards" — no explicit error line was captured in the prefetch payload (`capture_likely_missed_fault: false`, but no failing statement is visible in the retained tail). A single occurrence with no reproducible signature; treated as isolated/transient (P2) pending a full-log review.

### Next Steps

1. Update the `gh-aw` compile-agentic version used by `github/gh-aw-actions` beyond v0.83.1 (currently in the blocked-versions list) and recompile `.github/workflows/daily-runtime-threat-scan.lock.yml`, then verify a subsequent scheduled run reaches the `agent` job.
2. If failures with the "Execute GitHub Copilot CLI" step recur, pull the full (non-truncated) job log for run 33717072313 to identify the actual error line before filing a fix issue.

### Control Plane
- Correlation ID: `33818698355-78`
- Central repository: `githubnext/gh-aw-cao`
- Control plane run: https://github.com/githubnext/gh-aw-cao/actions/runs/33818698355

> Generated by [:rotating_light: AW Maintenance / Failures](https://github.com/githubnext/gh-aw-cao/actions/runs/33818698355) · copilot · auto · 43.8 AIC · ⌖ 8.93 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 17, 2026, 11:47 PM UTC

In github/gh-aw-actions, inspect the pinned compile-agentic version and .github/workflows/daily-runtime-threat-scan.lock.yml. Start by checking the blocked-version guidance in the reported compat.json URL, then update beyond v0.83.1 and recompile the workflow. Done means the lock file is regenerated and a subsequent scheduled run reaches the agent job.

Written by the indexing model from the issue text.