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

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

```json
{
"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](https://github.com/dotnet/runtime/actions/runs/33935007015) · opus48 · 413.5 AIC · ⌖ 11.1 AIC · ⊞ 20.7K · [◷](https://github.com/search?q=repo%3Adotnet%2Fruntime+is%3Aissue+%22gh-aw-workflow-call-id%3A+dotnet%2Fruntime%2Fci-failure-scan%22&type=issues)

### Report
|Build|Repository|Step Name|Console log|Pull Request|
|---|---|---|---|---|
|[1595722](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595722)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1595722/logs/299)|dotnet/runtime#133878|
|[1595271](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595271)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1595271/logs/330)|dotnet/runtime#133850|
|[1594914](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594914)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1594914/logs/324)||
|[1594508](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594508)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1594508/logs/344)|dotnet/runtime#130050|
|[1594483](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594483)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1594483/logs/413)||
|[1594257](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1594257)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1594257/logs/382)|dotnet/runtime#130050|
|[1593994](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593994)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593994/logs/306)|dotnet/runtime#130050|
|[1593912](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593912)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593912/logs/513)|dotnet/runtime#133774|
|[1593941](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593941)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593941/logs/340)|dotnet/runtime#133730|
|[1593895](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593895)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593895/logs/336)|dotnet/runtime#133656|
|[1593890](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593890)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593890/logs/338)||
|[1593638](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593638)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593638/logs/323)|dotnet/runtime#133748|
|[1593621](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593621)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593621/logs/334)|dotnet/runtime#133747|
|[1593460](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593460)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593460/logs/324)|dotnet/runtime#131826|
|[1593419](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593419)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593419/logs/308)|dotnet/runtime#133726|
|[1593405](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593405)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593405/logs/297)|dotnet/runtime#133730|
|[1593175](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593175)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1593175/logs/300)|dotnet/runtime#133704|
|[1592572](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592572)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592572/logs/281)|dotnet/runtime#133688|
|[1592474](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592474)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592474/logs/391)|dotnet/runtime#133595|
|[1592262](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592262)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592262/logs/335)|dotnet/runtime#133656|
|[1592185](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592185)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592185/logs/319)|dotnet/runtime#132720|
|[1592068](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592068)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592068/logs/310)|dotnet/runtime#133656|
|[1592016](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592016)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1592016/logs/256)|dotnet/runtime#130885|
|[1591981](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591981)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591981/logs/326)||
|[1591880](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591880)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591880/logs/340)|dotnet/runtime#133535|
|[1591761](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591761)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591761/logs/313)|dotnet/runtime#133188|
|[1591589](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591589)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591589/logs/339)|dotnet/runtime#131589|
|[1591567](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591567)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591567/logs/313)|dotnet/runtime#133635|
|[1591551](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591551)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591551/logs/334)|dotnet/runtime#133634|
|[1591515](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591515)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591515/logs/331)|dotnet/runtime#133633|
|[1591433](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591433)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591433/logs/308)|dotnet/runtime#130050|
|[1591397](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591397)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1591397/logs/358)|dotnet/runtime#133188|
|[1590833](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590833)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1590833/logs/286)|dotnet/runtime#133595|
|[1590309](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590309)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1590309/logs/257)||
|[1590087](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590087)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1590087/logs/301)|dotnet/runtime#133535|
|[1590050](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590050)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1590050/logs/316)|dotnet/runtime#133545|
|[1590016](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590016)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1590016/logs/315)|dotnet/runtime#133188|
|[1589521](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1589521)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1589521/logs/318)|dotnet/runtime#133463|
|[1589394](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1589394)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1589394/logs/330)|dotnet/runtime#133509|
|[1589095](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1589095)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1589095/logs/332)|dotnet/runtime#133501|
|[1588848](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588848)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588848/logs/333)|dotnet/runtime#133486|
|[1588804](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588804)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588804/logs/250)|dotnet/runtime#133480|
|[1588522](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588522)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588522/logs/354)|dotnet/runtime#133463|
|[1588392](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588392)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588392/logs/307)||
|[1588364](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588364)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588364/logs/313)|dotnet/runtime#133344|
|[1588251](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588251)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588251/logs/377)|dotnet/runtime#130050|
|[1588115](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588115)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1588115/logs/324)|dotnet/runtime#132425|
|[1587542](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587542)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1587542/logs/310)|dotnet/runtime#133344|
|[1587466](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587466)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1587466/logs/292)|dotnet/runtime#132584|
|[1587235](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587235)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1587235/logs/336)|dotnet/runtime#131995|
|[1587028](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587028)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1587028/logs/325)|dotnet/runtime#133344|
|[1586852](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586852)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1586852/logs/333)|dotnet/runtime#133344|
|[1586636](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586636)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1586636/logs/305)||
|[1586497](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586497)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1586497/logs/241)|dotnet/runtime#130050|
|[1586258](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586258)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1586258/logs/362)|dotnet/runtime#133359|
|[1586071](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586071)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1586071/logs/317)|dotnet/runtime#132819|
|[1585398](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1585398)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1585398/logs/341)|dotnet/runtime#133340|
|[1585077](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1585077)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1585077/logs/286)||
|[1584963](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584963)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584963/logs/330)|dotnet/runtime#130050|
|[1584744](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584744)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584744/logs/318)||
|[1584637](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584637)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584637/logs/379)|dotnet/runtime#130050|
|[1584624](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584624)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584624/logs/287)|dotnet/runtime#133265|
|[1584496](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584496)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584496/logs/295)|dotnet/runtime#133309|
|[1584464](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584464)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584464/logs/319)|dotnet/runtime#133308|
|[1584432](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584432)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584432/logs/351)|dotnet/runtime#133265|
|[1584276](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584276)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584276/logs/335)|dotnet/runtime#132720|
|[1584265](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584265)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584265/logs/273)|dotnet/runtime#133294|
|[1584156](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1584156)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1584156/logs/312)||
|[1583986](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1583986)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1583986/logs/310)|dotnet/runtime#133203|
|[1583967](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1583967)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1583967/logs/285)|dotnet/runtime#133265|
|[1583856](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1583856)|dotnet/runtime|Build / Test|[Log](https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_apis/build/builds/1583856/logs/352)|dotnet/runtime#131826|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|1|49|71|