[dotnet watch] Cannot open project Lib.fsproj because extension fsproj is not associated with a language

[carlossanlop]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=932408
Build error leg or test failing: dotnet-sdk-public-ci

Error Message

{
  "ErrorMessage" : "because the file extension '.fsproj' is not associated with a language",
  "BuildRetry" : false,
  "ExcludeConsoleLog" : false
}

• PR: [ApiDiff] Update symbol filtering code to be able to load a list of strings or a list of files #46255
• Queue: FullFramework: windows (x64)
• Job result: https://dev.azure.com/dnceng-public/public/_build/results?buildId=932408&view=logs&j=2709a726-7db6-5829-ca7b-958b9d664f9e&t=9c6bf218-1bed-58a8-ccb2-7aefc7e3994e
• Log file: https://helixr1107v0xdeko0k025g8.blob.core.windows.net/dotnet-sdk-refs-pull-46255-merge-f03a79adaa674a1187/dotnet-watch.Tests.dll.1/1/console.1a860fa0.log?helixlogtype=result
• Output:

 dotnet watch ⚠ msbuild: [Failure] Cannot open project 
'C:\h\w\B34E099A\t\dotnetSdkTests\geksol2n.pb2\RenameSourceF---5F6BBE1E\FSharp\Lib.fsproj' 
because the file extension '.fsproj' is not associated with a language.

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=932408
Error message validated: [because the file extension '.fsproj' is not associated with a language]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 1/28/2025 10:53:09 PM UTC

Report

Build	Definition	Step Name	Console log	Pull Request
2771298	dotnet-sdk	Run dotnet-format on dotnet/aspnetcore AspNetCore.sln	Log	#52300

Build	Definition	Test	Pull Request
1122214	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49974
2771346	dotnet-sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.MauiBlazor	#52307
1121478	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50245
2771109	dotnet-sdk	dotnet-watch.Tests.dll.1.WorkItemExecution
1121255	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50168
1121248	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50188
1120990	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1119717	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50109
1119532	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50151
1119384	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#45039
1118727	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49682
1115895	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#50091
1117194	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1116976	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1116520	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50101
2766637	dotnet-sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#51985
2766375	dotnet-sdk	dotnet-watch.Tests.dll.1.WorkItemExecution
1115691	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50085
1115184	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.ProjectChange_Update	#50073
1115347	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50009
1114999	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.ProjectChange_Update	#50073
1115134	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50076
1114823	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49942
1114702	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50063
1113877	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49832
1113899	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49958
1113881	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49843
1113696	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49832
2764719	dotnet-sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.MauiBlazor	#51985
1113053	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1113136	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50039
1111690	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50002
1111427	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1110748	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
2761722	dotnet-sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.MauiBlazor	#51985
1109785	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50002
1109717	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#50002
1109338	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49991
1109006	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49974
1108155	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49947
1107766	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49974
1106456	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49946
1106341	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49942
1105212	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#49847
1104821	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.BlazorWasm	#49740
1102342	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#49901
1101555	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#49847
1101651	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49891
1099538	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1101273	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.GracefulTermination	#49847
1099431	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49544
1100020	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#49866
1099618	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.GracefulTermination	#49847
2753126	dotnet-sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.MauiBlazor	#51708
1099251	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49847
1099206	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49740
1098820	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49740
1098687	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49740
2752661	dotnet-sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#51694
1097859	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49800
1097911	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49841
1097831	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49838
1097882	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49634
1097433	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49798
1097645	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49800
1097312	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49831
1097318	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49832
1096992	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49531
1096421	dotnet/sdk	Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.Aspire_BuildError_ManualRestart	#49800
1096224	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49756
1096042	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49798
1095745	dotnet/sdk	dotnet-watch.Tests.dll.1.WorkItemExecution	#49611

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
5	15	73

[baronfel]

I thought @tmat already fixed this with a servicing fix to the 9.0.1xx releases? It should be in 102 or 103?

[tmat]

The warning is not the reason why the test failed.

[tmat]

This commit hasn't been integrated to main yet: 3cd7c65

[Forgind]

@tmat, just hit this issue in #45419, which is targeting release/9.0.3xx. I don't think this worked.

[Forgind]

https://helixr1107v0xdeko0k025g8.blob.core.windows.net/dotnet-sdk-refs-pull-45419-merge-3ed9793f78ef4bc6b6/dotnet-watch.Tests.dll.1/1/console.dd2344c8.log?helixlogtype=result

[tmat]

@Forgind You can ignore Mac ARM64 failures. The machines are slow and the tests time out.

[Forgind]

@Forgind You can ignore Mac ARM64 failures. The machines are slow and the tests time out.

Can you explain that a bit further? @marcpopMSFT told me that those machines should actually be faster than the x64 machines. That said, we've also had a lot of timeouts and are actively working on figuring out why (without success as of yet, hence the PR I linked). It may be that we've just misunderstood where the issue is on that leg, and we should just increase the timeout across the board.

[tmat]

@Forgind Not sure what the status is right now, but the Mac ARM64 CI leg has been optional for a while.

[Forgind]

It's optional right now because it's been timing out, but we've been trying to figure out why it keeps timing out so we can turn it back on. I don't know that it's just automatically slow.

[tmat]

Oh, I see. So in this specific case the logs show that dotnet build is taking very long time. Not sure where it gets stuck:

Microsoft.DotNet.Watch.UnitTests.ApplyDeltaTests.AddSourceFile [OUTPUT] dotnet watch 🚀 Launched '/private/tmp/helix/working/B2910953/p/d/dotnet' with arguments 'build /private/tmp/helix/working/B2910953/w/A696090A/e/testExecutionDirectory/AddSourceFile---E93D266F/AppWithDeps/App.WithDeps.csproj -consoleLoggerParameters:NoSummary;Verbosity=minimal': process id 96065

Seems like memory dumps were saved but I don't see them in the artifact list.

[marcpopMSFT]

To clarify, forgind was trying to get context on your comment that the arm64 machines are slow. Ever since we added that leg, it has been fairly consistently timing out. When I asked the codeflow chat, they indicated that arm64 should be faster than x64 so it wasn't a machine issue and we should dig further. That's when we made them optional, later turned them off, and have been trying to find out why they are timing out ever since. Do you have a reason to believe the mac arm64 machines are slower than the x64 ones?

[tmat]

Do you have a reason to believe the mac arm64 machines are slower than the x64 ones?

No specific reason. I didn't know forgind is trying to figure out why. Just stating that we have been skipping the CI leg because it's been timing out.