[ci-scan] Test failure: cDAC x-plat dump test failures in runtime-diagnostics

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1433736
Build error leg or test failing: CdacXPlatDumpTest (multiple platform legs) and cDAC_no_fallback_windows_x64_release SOS.UnitTests

Error Details

The runtime-diagnostics pipeline (def 309) has been failing consistently with cDAC x-plat dump test failures across multiple platform legs (linux-arm, linux-arm64, linux-x64, windows-arm64, windows-x86, windows-x64). Additionally, the cDAC_no_fallback_windows_x64_release job fails SOS.UnitTests.

The post-test step "Fail on test errors" detects the dump generation failures and reports:

One or more cDAC x-plat dump test failures were detected. Failing the job.

Confirmed failing in builds: 1433736 (2026-05-25), 1433137 (2026-05-24), 1432614 (2026-05-23), 1430909 (2026-05-22), 1429306 (2026-05-21) — 5 consecutive failures.

Tracking: dotnet#126359 (cDAC GCInfo decoder does not support x86)
Prior closed KBE: dotnet#128277

Error Message

{
  "ErrorMessage": "One or more cDAC x-plat dump test failures were detected. Failing the job.",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

First build it occurred

• Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1429306
• Finished: 2026-05-21
• Persistent across the entire scanned window; true origin may predate 2026-05-21.

Note

This issue was generated by the CI Outer-Loop Failure Scanner.

Note

🔒 Integrity filter blocked 1 item

The following item was blocked because it doesn't meet the GitHub integrity level.

• #88582 search_issues: has lower integrity than agent requires. The agent cannot read data with integrity below "approved".

To allow these resources, lower min-integrity in your GitHub frontmatter:

tools:
  github:
    min-integrity: approved  # merged | approved | unapproved | none

Generated by CI Outer-Loop Failure Scanner · ● 25.7M · ◷