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Known Test Repository Issue Sometimes Misses Test Failures #6411

Description

@nagilson

Build

https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1196220

Build leg reported

Microsoft.DotNet.Cli.New.IntegrationTests.DotnetNewSearchTests.BasicTest

Pull Request

dotnet/sdk#51591

Known issue core information

Fill out the known issue JSON section by following the step by step documentation on how to create a known issue

 {
    "ErrorMessage" : "The SSL connection",
    "BuildRetry": false,
    "ErrorPattern": "",
    "ExcludeConsoleLog": false
 }

So, I believe there is an issue with the known issue flagger, where it is failing to mark certain failures as known, even if they are a known issue. Please let me know if I am mistaken.

Here's the issue:
Looking at this image, this test was not considered a known issue:
https://github.com/dotnet/sdk/pull/51591/checks?check_run_id=54740778719

Image

I believe that, because it's showing as a test failure, and other similar test failures are counted in the above section:

Image

Furthermore, it appeared to be blocking build-analysis from being green.

Here's such an example of 1 of several 'known issues' that flag this issue:
#5015
dotnet/sdk#51574
#6410

As you can see in, #51574 looks for the string "The SSL connection could not be established" as a ErrorMessage which is supposed to use String.Contains. The test, however, that I think was not flagged as a 'known issue', did indeed have that error message string. It looks like some were flagged, while others were not. Here's the output of that 'unknown' test failure:

Expected command to exit with 0 but it did not.\nFile Name: /Users/runner/work/1/s/artifacts/bin/redist/Release/dotnet/dotnet\nArguments: new console --search --debug:custom-hive /Users/runner/work/1/s/artifacts/tmp/Release/dotnet-new.IntegrationTests/SharedHomeDirectory/20251106211951401\nExit Code: 103\nStdOut:\nWarning: use of 'dotnet new --search' is deprecated. Use 'dotnet new search' instead.\nFor more information, run: \n   dotnet new search -h\n\nSearching for the templates...\nStdErr:\nMatches from template source: NuGet.org\nSearch failed: Failed to update search cache. (The SSL connection could not be established, see inner exception.) (The SSL connection could not be established, see inner exception.)\n\nFor details on the exit code, refer to https://aka.ms/templating-exit-codes#103\n [[Full log]](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1196220&view=ms.vss-test-web.build-test-results-tab&runId=33106418&resultId=100166&paneView=debug)

While there may be a confounding variable in that there are now several known issues which are tracking substrings of each other, or may overlap, the whole reason there are multiple in the first place is because the first existing known test repository issue did not flag all of the tests which failed with the known issue.

Could this alternatively be a limitation of:

  1. A limit of how many tests can be flagged as a known issue for the same known issue
  2. A different 'failing configuration' which causes issues to be missed?
  3. A misunderstanding of which strings get searched? Note that I believe the error is also in the 'helix logs'.
  4. A failure of my own accord to file the known issue? @dotnet/dnceng

Release Note Category

  • Feature changes/additions
  • Bug fixes
  • Internal Infrastructure Improvements

Release Note Description

Additional information about the issue reported

No response

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1196220
Error message validated: [The SSL Connection C]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 11/6/2025 10:39:11 PM UTC

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1196220
Error message validated: [The SSL connection]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 11/6/2025 10:42:09 PM UTC

Report

Build Definition Step Name Console log Pull Request
1196423 dotnet/machinelearning Build Log dotnet/machinelearning#7543
1196398 dotnet/aspnetcore Run build.sh Log dotnet/aspnetcore#64262
1196235 dotnet/runtime Send tests to Helix (Unix) Log dotnet/runtime#121356
1196186 dotnet/runtime Send to Helix (Unix) Log dotnet/runtime#121417
1196168 dotnet/runtime Send tests to Helix (Unix) Log
Build Definition Test Pull Request
1196358 dotnet/sdk Microsoft.DotNet.Cli.New.IntegrationTests.DotnetNewSearchTests.CanShowDeprecationMessage_WhenLegacyCommandIsUsed dotnet/sdk#51558
1196220 dotnet/sdk Microsoft.DotNet.Cli.New.IntegrationTests.DotnetNewSearchTests.CanShowDeprecationMessage_WhenLegacyCommandIsUsed dotnet/sdk#51591

Summary

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

Report

Build Repository Step Name Console log Pull Request
1552964 dotnet/maui Controls ScrollView Log
1550096 dotnet/aspnetcore Run build.sh Log dotnet/aspnetcore#68329
1539846 dotnet/runtime Send tests to Helix (Unix) Log dotnet/runtime#131829
1537425 dotnet/runtime Copy native test components to test output folder Log dotnet/runtime#131309
1535384 dotnet/machinelearning Build Log dotnet/machinelearning#7669
3035268 dotnet-maui Run Integration Tests - RunOniOS_MauiReleaseTrimFull_CoreCLR Log
3034486 dotnet-aspnetcore Publish Build Assets Log
3032704 dotnet-maui Run Integration Tests - Blazor Log
1525487 dotnet/sdk 🟣 Build Log dotnet/sdk#55441
1523876 dotnet/runtime Build Tests Log dotnet/runtime#131024
1523184 dotnet/maui Controls Lifecycle,ManualReview,Maps Log dotnet/maui#36109
1517678 dotnet/aspnetcore Run build.sh Log dotnet/aspnetcore#67900
3025210 dotnet-dotnet Build Log
1514833 dotnet/sdk 🟣 Build Log dotnet/sdk#55297
3024926 dotnet-dotnet Build (azurelinuxX64CrossContainer) Log
1512350 dotnet/sdk Build Log
Build Repository Test Pull Request
1553449 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ServerCertificates_Test.UseCallback_BadCertificate_ExpectedPolicyErrors
1553450 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_DangerousAcceptAllCertificatesValidator_Test.InvalidCertificateServers_CertificateValidationDisabled_Succeeds
1552117 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable dotnet/runtime#132274
1552139 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1551997 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1551567 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1551570 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1551205 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1551332 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1550103 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1549807 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1549825 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1549173 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1548975 dotnet/sdk Microsoft.NET.Build.Containers.UnitTests.dll.2.WorkItemExecution dotnet/sdk#55724
1548269 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1546438 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1546713 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1546477 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1546872 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1546590 dotnet/runtime System.Net.Http.Functional.Tests.SyncHttpHandler_HttpProtocolTests.GetAsync_Chunked_VaryingSizeChunks_ReceivedCorrectly
1546583 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_DangerousAcceptAllCertificatesValidator_Test.InvalidCertificateServers_CertificateValidationDisabled_Succeeds
1546582 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_DangerousAcceptAllCertificatesValidator_Test.InvalidCertificateServers_CertificateValidationDisabled_Succeeds
1546596 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpProtocolTests.GetAsync_Chunked_VaryingSizeChunks_ReceivedCorrectly
1545135 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1544923 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1544242 dotnet/runtime System.Net.Http.Functional.Tests.HttpClientHandler_RemoteServerTest.GetAsync_SetAutomaticDecompression_ContentDecompressed_Deflate
1544136 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1543206 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1539402 dotnet/sdk Microsoft.NET.Build.Containers.UnitTests.dll.2.WorkItemExecution dotnet/sdk#55212
1541064 dotnet/runtime IntrinsicsInSystemPrivateCoreLib.Tests.WorkItemExecution dotnet/runtime#131209
1541178 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1539770 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1538838 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1538813 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1538638 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1537866 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1535640 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1534953 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1534774 dotnet/roslyn Microsoft.CodeAnalysis.MSBuild.UnitTests.NewlyCreatedProjectsFromDotNetNew.ValidateCSharpTemplateProjects dotnet/roslyn#84701
1534642 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1534639 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1534582 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1530310 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1527892 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1526361 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
3030996 dotnet-sdk Microsoft.NET.Pack.Tests.GivenThatThereAreImplicitPackageReferences.Microsoft.NET.Pack.Tests.GivenThatThereAreImplicitPackageReferences.Packing_a_netcoreapp_1_1_app_includes_the_implicit_dependency
1523325 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1521355 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1521470 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1521190 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1521102 dotnet/runtime IntrinsicsInSystemPrivateCoreLib.Tests.WorkItemExecution
1520937 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1520451 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1519700 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1518979 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
3027306 dotnet-sdk Microsoft.DotNet.Cli.New.IntegrationTests.DotnetNewInstallTests.ReinstallDoesntRemoveTemplates #62654
1518559 dotnet/runtime System.Net.Http.Functional.Tests.SocketsHttpHandler_HttpClientHandler_ClientCertificates_Test.AutomaticOrManual_DoesntFailRegardlessOfWhetherClientCertsAreAvailable
1517929 dotnet/sdk CanShowMessageInCaseShortNameConflict
3025313 dotnet-sdk Microsoft.NET.Build.Containers.UnitTests.dll.2.WorkItemExecution #63003
1515623 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1515072 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1515081 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution
1514458 dotnet/runtime System.Net.Http.Functional.Tests.WorkItemExecution

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
3 27 79

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