[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
1402771	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54151
1402274	dotnet/sdk	Microsoft.NET.Build.Tasks.UnitTests.GivenAGetDependsOnNETStandardTask.SucceedsWithWarningOnLockedFile	#53847
1402198	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54134
1402120	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54143
1398670	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution
1398043	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53847
1397912	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54092
1396627	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54071
1395844	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53919
1395608	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54050
1395524	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54049
1395292	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53847
1391854	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54047
1390628	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54004
1390310	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53447
1389738	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54017
1389446	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54015
1388841	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#54004
1384529	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution
1383661	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53947
1382589	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53680
1382163	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53680
1381919	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53884
1381145	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53820
1380761	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53680
1380380	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution
1378681	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53635
1378600	dotnet/sdk	Microsoft.NET.Build.Extensions.Tasks.Tests.dll.WorkItemExecution	#53723

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
4	13	28