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[aw-failures] P0 (resolved): Safe Outputs MCP crash — missing safe_outputs_mcp_arguments.cjs broke 8 main agentic workflows #37230

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Description

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Fix the missing-module emission in the Safe Outputs MCP server — it crashed 8 main agentic workflows in a 2.5h window. Already remediated on main by #37224/#37225; this report records the incident and the one remaining hardening action.

Status: ✅ Resolved on current main — this Failure Investigator run (post-#37224) started its own Safe Outputs MCP server successfully, confirming the crash no longer reproduces.

Summary

Critical evidence

Every failing run aborts identically at MCP server startup, before useful agent work:

ERROR: Server process <pid> has died
Error: Cannot find module './safe_outputs_mcp_arguments.cjs'
##[error]Process completed with exit code 1.

A digest-mismatch: error marker accompanies each failure, consistent with stale/mis-emitted generated assets.

Failure cluster (main branch)

Workflow Run Time (UTC) Signature
Daily Documentation Healer §27046499438 00:01 missing safe_outputs_mcp_arguments.cjs
Semantic Function Refactoring §27046530357 00:02 same (+ copilot_driver.cjs)
Daily Observability Report for AWF §27046551778 00:03 same
Auto-Triage Issues §27046620355 00:05 same
PR Sous Chef §27046719576 00:09 same
Daily Model Inventory Checker §27046929440 00:16 same
Daily Sentrux Report §27046950309 00:17 same
Daily Security Red Team Agent §27046121207 23:49 same

The same signature also broke PR checks on the copilot/update-compiler-agentic-commands-runtime and copilot/update-compiler-algorithm branches — expected, since those PRs touch the same generator.

Behavioral diff (drift confirmation)

The delta is binary (module present vs absent in the emitted bundle), pinning the regression to the #37208#37224 codegen change.

Existing issue correlation

Fix roadmap

Verification

  • Current main agentic runs reach a working Safe Outputs MCP server (this run is the witness).
  • Re-running any of the 8 listed workflows on main should now pass the Start Safe Outputs MCP HTTP Server step.

References: §27046499438 · §27046620355 · §27046121207

Generated by 🔍 [aw] Failure Investigator (6h) · agent 220.1 AIC · threat-detection 13.2 AIC ·

  • expires on Jun 13, 2026, 1:45 AM UTC

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