One process not started with aspire integ test

[Evangelink]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1475378
Build error leg or test failing: Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources
Pull request: #54857

Details

Exception Message

Expected:
type=build_complete, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=building, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=hot_reload_applied, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=process_started, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj],
type=process_started, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj],
type=process_started, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=restarting, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj]
Actual:
type=build_complete, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=building, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=hot_reload_applied, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj;/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=process_started, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj],
type=process_started, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceB/B.csproj],
type=restarting, projects=[/datadisks/disk1/work/B0D809A6/t/dotnetSdkTests.WZKnsaxF/ServerAndReso---F77C2CBE/ServiceA/A.csproj]

CallStack

at Microsoft.DotNet.Watch.UnitTests.AssertEx.Fail(String message) in /_/test/Microsoft.DotNet.HotReload.Test.Utilities/AssertEx.cs:line 216
   at Microsoft.DotNet.Watch.UnitTests.AssertEx.SequenceEqual[T](IEnumerable`1 expected, IEnumerable`1 actual, IEqualityComparer`1 comparer, String message, String itemSeparator, Func`2 itemInspector) in /_/test/Microsoft.DotNet.HotReload.Test.Utilities/AssertEx.cs:line 171
   at Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources() in /_/test/dotnet-watch.Tests/Aspire/AspireLauncherIntegrationTests.cs:line 136
   at Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources() in /_/test/dotnet-watch.Tests/Aspire/AspireLauncherIntegrationTests.cs:line 136
   at Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources() in /_/test/dotnet-watch.Tests/Aspire/AspireLauncherIntegrationTests.cs:line 136
   at Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources() in /_/test/dotnet-watch.Tests/Aspire/AspireLauncherIntegrationTests.cs:line 136
--- End of stack trace from previous location ---

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

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

{
  "ErrorMessage": "",
  "ErrorPattern": "type=process_started, projects=\\[(?:[A-Za-z]:)?[/\\\\].+[/\\\\]dotnetSdkTests\\.[^/\\\\]+[/\\\\].+\\.csproj\\]",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Report

Build	Repository	Test	Pull Request
1482601	dotnet/sdk	ServerAndResources	#55000
1482577	dotnet/sdk	ServerAndResources
1482215	dotnet/sdk	ServerAndResources	#54993
1481580	dotnet/sdk	ServerAndResources	#54875
1481518	dotnet/sdk	ServerAndResources	#54870
1481394	dotnet/sdk	ServerAndResources
1480785	dotnet/sdk	ServerAndResources	#54973
1480181	dotnet/sdk	ServerAndResources	#54943
1478796	dotnet/sdk	ServerAndResources	#54871
1478247	dotnet/sdk	ServerAndResources
1478226	dotnet/sdk	ServerAndResources	#54945
1478055	dotnet/sdk	ServerAndResources	#54875
1477804	dotnet/sdk	ServerAndResources	#54719
1477630	dotnet/sdk	ServerAndResources	#54941
1476702	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54836
1476278	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54929
1476241	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54849
1476203	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54847
1475888	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54860
1475378	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.AspireLauncherIntegrationTests.ServerAndResources	#54857

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
6	20	20

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1475378
Error message validated: [type=process_started, projects=\[(?:[A-Za-z]:)?[/\\].+[/\\]dotnetSdkTests\.[^/\\]+[/\\].+\.csproj\]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 6/22/2026 6:25:34 PM UTC

[github-actions]

This Known Build Error has had 0 hits in the past month and has been labeled stale. It will be auto-closed in 7 days if the hit count remains at 0. Add the keep-open label to prevent auto-closure.

[Evangelink]

It was also hit on: #54882 (comment)

[MichaelSimons]

The reason the stale detection flagged this is there was a rogue summary table in the description. I removed it.

[MichaelSimons]

@tmat, could you take a look at this intermittent failure please. It is occurring at a high frequency. TIA

[tmat]

There is already PR that is fixing it: #54955