[Known Build Error] SemanticSearch.ReferenceAssemblies: Error updating baseline because it is being used by another process

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1390698&view=logs&j=96a50e04-2c20-5562-4d03-6c998a9295de Build error leg or test failing: Correctness / Correctness_Determinism / Build - Validate determinism Pull request: https://github.com/dotnet/roslyn/pull/83271

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "",
  "ErrorPattern": "SemanticSearch.ReferenceAssemblies.*Error updating baseline.*because it is being used by another process",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1390698 Error message validated: [SemanticSearch.ReferenceAssemblies.*Error updating baseline.*because it is being used by another process] Result validation: :white_check_mark: Known issue matched with the provided build. Validation performed at: 4/22/2026 11:25:43 AM UTC

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Summary