[aw] [aw] Failure Investigator (6h) failed

[github-actions]

Workflow Failure

Workflow: [aw] Failure Investigator (6h)
Branch: main
Run: https://github.com/github/gh-aw/actions/runs/31855680444

Warning

Engine Failure: The claude engine terminated unexpectedly.

Last agent output:

Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:crypto" "node:dns" "node:dns/promises" "node:events" "node:fs" "node:fs/promises" "node:http" "node:http2" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:readline" "node:stream" "node:stream/consumers" "node:stream/promises" "node:string_decoder" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:vm" "node:zlib" "undici" "ws" 
Elapsed: 7953ms | User: 950ms | Sys: 100ms
RSS: 0.55 GB | Peak: 0.55 GB | Commit: 0.32 GB | Faults: 0 | Machine: 6.44 GB
�[0m
�[31mpanic�[0m�[2m(main thread): �[0mIllegal instruction at address 0x7FB3A8F68EBB
oh no�[0m�[2m:�[0m Bun has crashed. This indicates a bug in Bun, not your code.
To send a redacted crash report to Bun's team,
please file a GitHub issue using the link below:
�[36m https://bun.report/1.4.0/B_1eb83531mgggkEuhogC_i++n4E2q8n4E23w+0E_2l9y6Bms+q6Bi++n4E2q8n4E23w+0E_2l9y6Bms+q6Bi++n4E2q8n4Ew0thyEyn2w6Bms+q6Bm46n4E+syo4EA3m7/Br04lh3C
�[0m

Action Required

Assign this issue to an agent to debug and fix the issue.

Debug with any coding agent

Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):

Debug the agentic workflow failure using https://raw.githubusercontent.com/github/gh-aw/main/debug.md

The failed workflow run is at https://github.com/github/gh-aw/actions/runs/31855680444

Manually invoke the agent

Debug this workflow failure using your favorite Agent CLI and the agentic-workflows prompt.

• Start your agent
• Load the agentic-workflows skill from .github/skills/agentic-workflows/SKILL.md or https://github.com/github/gh-aw/blob/main/.github/skills/agentic-workflows/SKILL.md
• Type debug the agentic workflow aw-failure-investigator failure in https://github.com/github/gh-aw/actions/runs/31855680444

Tip

Stop reporting this workflow as a failure

To stop a workflow from creating failure issues, set report-failure-as-issue: false in its frontmatter:

safe-outputs:
  report-failure-as-issue: false

Generated from [aw] Failure Investigator (6h) · 27.6 AIC · ◷

• expires on Aug 15, 2026, 1:16 PM UTC

---

Closing as duplicate

Close this — the crash signature is already tracked in #51984 ("Bun runtime segfault crashing Claude Code CLI"). Root cause: Bun 1.4.0 Illegal instruction/panic (main thread) crash under the Claude Code CLI harness, same class of fault already being tracked there.

Evidence: Run §31855680444 (this Failure Investigator's own prior run in this window) shows the identical Bun panic signature (bun.report/1.4.0/..., illegal instruction, "This indicates a bug in Bun, not your code").

Merging tracking into #51984 to avoid fragmenting the Bun-crash investigation across two issues — see #51984 for the consolidated fix plan and occurrence count.> Generated by 🔍 [aw] Failure Investigator (6h) · agent · 210.5 AIC · ⌖ 9.45 AIC · ⊞ 5.6K · ◷