[Known Build Error] GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile flaky failure

[jkoritzinsky]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1378681
Build error leg or test failing: Microsoft.NET.Build.Extensions.Tasks.Tests.dll
Pull request: #53635

Error Message

{
  "ErrorMessage": "Failed Microsoft.NET.Build.Tasks.UnitTests.GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile",
  "ErrorPattern": "",
  "BuildRetry": true,
  "ExcludeConsoleLog": false
}

Details

GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile fails intermittently with:

Expected value to be greater than 0, but found 0.
   at Microsoft.NET.Build.Tasks.UnitTests.GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile()
   in /_/test/Microsoft.NET.Build.Extensions.Tasks.Tests/GivenAGetDependsOnNETStandardTask.cs:line 140

The test locks a file and expects the task to produce at least one warning, but the warning count is 0.

Reproduces on main — confirmed in builds:

• https://dev.azure.com/dnceng-public/public/_build/results?buildId=1376086 (Microsoft.NET.Build.Extensions.Tasks.Tests.dll)
• https://dev.azure.com/dnceng-public/public/_build/results?buildId=1377208 (Microsoft.NET.Build.Extensions.Tasks.Tests.dll)
• https://dev.azure.com/dnceng-public/public/_build/results?buildId=1378681 (Microsoft.NET.Build.Extensions.Tasks.Tests.dll)

Sample log: https://helix.dot.net/api/2019-06-17/jobs/79a1d5ac-8be4-4703-a4d4-e1c20c8421a5/workitems/Microsoft.NET.Build.Extensions.Tasks.Tests.dll/console

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1378681
Error message validated: [Failed Microsoft.NET.Build.Tasks.UnitTests.GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/14/2026 9:14:40 PM UTC

Report

Build	Definition	Test	Pull Request
1378681	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53635

Summary

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