CompleteOnNothingAtLineStartReturnsEmptyList: Microsoft.Dafny.Compilation[0] System.ObjectDisposedException: The semaphore has been disposed

[MikaelMayer]

Seen here, only for Windows https://github.com/dafny-lang/dafny/actions/runs/11516350526/job/32058868043?pr=5846

[xUnit.net 00:00:24.34]     Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.CompleteOnNothingAtLineStartReturnsEmptyList [FAIL]
[xUnit.net 00:00:24.34]       OmniSharp.Extensions.JsonRpc.Server.InternalErrorException : Internal error. 
[xUnit.net 00:00:24.34]       Stack Trace:
[xUnit.net 00:00:24.34]            at OmniSharp.Extensions.JsonRpc.ResponseRouter.ResponseRouterReturnsImpl.Returning[TResponse](CancellationToken cancellationToken)
[xUnit.net 00:00:24.34]            at OmniSharp.Extensions.LanguageServer.Protocol.Progress.ProgressManager.<>c__DisplayClass22_0`1.<<MakeRequest>b__0>d.MoveNext()
[xUnit.net 00:00:24.34]         --- End of stack trace from previous location ---
[xUnit.net 00:00:24.34]         D:\a\dafny\dafny\dafny\Source\DafnyLanguageServer.Test\Completion\DotCompletionTest.cs(16,0): at Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.RequestCompletionAsync(TextDocumentItem documentItem, Position position)
[xUnit.net 00:00:24.34]         D:\a\dafny\dafny\dafny\Source\DafnyLanguageServer.Test\Completion\DotCompletionTest.cs(90,0): at Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.CompleteOnNothingAtLineStartReturnsEmptyList()
[xUnit.net 00:00:24.34]         --- End of stack trace from previous location ---
fail: Microsoft.Dafny.Compilation[0]
      Caught error in statusUpdates observable.
      System.ObjectDisposedException: The semaphore has been disposed.
         at System.Threading.SemaphoreSlim.WaitAsync(Int32 millisecondsTimeout, CancellationToken cancellationToken)
         at System.Threading.SemaphoreSlim.WaitAsync(CancellationToken cancellationToken)
         at VC.CheckerPool.FindCheckerFor(Program program, Split split, CancellationToken cancellationToken)
         at Microsoft.Boogie.VerificationTask.StartRun(CancellationToken cancellationToken)+MoveNext()
         at Microsoft.Boogie.VerificationTask.StartRun(CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()
         at System.Linq.AsyncEnumerable.ToObservableObservable`1.<>c__DisplayClass2_0.<<Subscribe>g__Core|0>d.MoveNext() in /_/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToObservable.cs:line 50
  Failed Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.CompleteOnNothingAtLineStartReturnsEmptyList [82 ms]
  Error Message:
   OmniSharp.Extensions.JsonRpc.Server.InternalErrorException : Internal error. 
  Stack Trace:
     at OmniSharp.Extensions.JsonRpc.ResponseRouter.ResponseRouterReturnsImpl.Returning[TResponse](CancellationToken cancellationToken)
   at OmniSharp.Extensions.LanguageServer.Protocol.Progress.ProgressManager.<>c__DisplayClass22_0`1.<<MakeRequest>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.RequestCompletionAsync(TextDocumentItem documentItem, Position position) in D:\a\dafny\dafny\dafny\Source\DafnyLanguageServer.Test\Completion\DotCompletionTest.cs:line 16
   at Microsoft.Dafny.LanguageServer.IntegrationTest.Completion.DotCompletionTest.CompleteOnNothingAtLineStartReturnsEmptyList() in D:\a\dafny\dafny\dafny\Source\DafnyLanguageServer.Test\Completion\DotCompletionTest.cs:line 90
--- End of stack trace from previous location ---