[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
1592262	dotnet/runtime	Build / Test	Log	#133656
1592185	dotnet/runtime	Build / Test	Log	#132720
1592068	dotnet/runtime	Build / Test	Log	#133656
1592016	dotnet/runtime	Build / Test	Log	#130885
1591981	dotnet/runtime	Build / Test	Log
1591880	dotnet/runtime	Build / Test	Log	#133535
1591761	dotnet/runtime	Build / Test	Log	#133188
1591589	dotnet/runtime	Build / Test	Log	#131589
1591567	dotnet/runtime	Build / Test	Log	#133635
1591551	dotnet/runtime	Build / Test	Log	#133634
1591515	dotnet/runtime	Build / Test	Log	#133633
1591433	dotnet/runtime	Build / Test	Log	#130050
1591397	dotnet/runtime	Build / Test	Log	#133188
1590833	dotnet/runtime	Build / Test	Log	#133595
1590309	dotnet/runtime	Build / Test	Log
1590087	dotnet/runtime	Build / Test	Log	#133535
1590050	dotnet/runtime	Build / Test	Log	#133545
1590016	dotnet/runtime	Build / Test	Log	#133188
1589521	dotnet/runtime	Build / Test	Log	#133463
1589394	dotnet/runtime	Build / Test	Log	#133509
1589095	dotnet/runtime	Build / Test	Log	#133501
1588848	dotnet/runtime	Build / Test	Log	#133486
1588804	dotnet/runtime	Build / Test	Log	#133480
1588522	dotnet/runtime	Build / Test	Log	#133463
1588392	dotnet/runtime	Build / Test	Log
1588364	dotnet/runtime	Build / Test	Log	#133344
1588251	dotnet/runtime	Build / Test	Log	#130050
1588115	dotnet/runtime	Build / Test	Log	#132425
1587542	dotnet/runtime	Build / Test	Log	#133344
1587466	dotnet/runtime	Build / Test	Log	#132584
1587235	dotnet/runtime	Build / Test	Log	#131995
1587028	dotnet/runtime	Build / Test	Log	#133344
1586852	dotnet/runtime	Build / Test	Log	#133344
1586636	dotnet/runtime	Build / Test	Log
1586497	dotnet/runtime	Build / Test	Log	#130050
1586258	dotnet/runtime	Build / Test	Log	#133359
1586071	dotnet/runtime	Build / Test	Log	#132819
1585398	dotnet/runtime	Build / Test	Log	#133340
1585077	dotnet/runtime	Build / Test	Log
1584963	dotnet/runtime	Build / Test	Log	#130050
1584744	dotnet/runtime	Build / Test	Log
1584637	dotnet/runtime	Build / Test	Log	#130050
1584624	dotnet/runtime	Build / Test	Log	#133265
1584496	dotnet/runtime	Build / Test	Log	#133309
1584464	dotnet/runtime	Build / Test	Log	#133308
1584432	dotnet/runtime	Build / Test	Log	#133265
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
14	52	52

[dotnet-policy-service]

Tagging subscribers to this area: @steveisok, @tommcdon, @dotnet/dotnet-diag
See info in area-owners.md if you want to be subscribed.

[steveisok]

Appears like Max is already on the case - 89f2236