[ci-scan] Build break: runtime-diagnostics cDAC leg fails - missing mscordbi_universal.dll

[github-actions]

A build break in the runtime-diagnostics pipeline (AzDO definition 309, dnceng-public/public, branch main) fails the cDAC leg (cDAC_windows_x64_release) because the matching universal DBI is missing when -cdacPath is supplied.

The failing step is eng\build.ps1, which errors out with a missing mscordbi_universal.dll:

D:\a\_work\1\s\eng\build.ps1 : -cdacPath requires the matching universal DBI at 'D:\a\_work\1\s\artifacts\cdac\mscordbi_universal.dll'.

This is a build-break (product build fails), so it blocks the required runtime-diagnostics gate and matches on every affected build regardless of a specific test.

• Pipeline: runtime-diagnostics (definition 309)
• First build it occurred: build 1580149
• Also present in follow-up build: 1582309
• Failing leg: cDAC_windows_x64_release

{
  "ErrorMessage": "-cdacPath requires the matching universal DBI",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Agentic workflow metadata (ci-failure-scan)

• Definition: 309 (runtime-diagnostics)
• Classification: build break (product build; cDAC leg)
• Source build: 1580149; follow-up: 1582309 (signature persists)
• Verified match count: 1 hits in failure.log

---

Note

This issue was filed automatically by the ci-failure-scan agentic workflow (AI/Copilot-generated).

Generated by CI Outer-Loop Failure Scanner · opus48 · 413.5 AIC · ⌖ 11.1 AIC · ⊞ 20.7K · ◷

Report

Build	Repository	Step Name	Console log	Pull Request
1584276	dotnet/runtime	Build / Test	Log	#132720
1584265	dotnet/runtime	Build / Test	Log	#133294
1584156	dotnet/runtime	Build / Test	Log
1583986	dotnet/runtime	Build / Test	Log	#133203
1583967	dotnet/runtime	Build / Test	Log	#133265
1583856	dotnet/runtime	Build / Test	Log	#131826

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
6	6	6