`dotnet watch run` throws AFTER CTRL-C

[richlander]

This is just the webapp template. I don't see this with Arm64, just x64 (reliably).

rich@MacBook-Air-M1-2020 webapp % dotnet --info | grep RID
 RID:         osx-x64
rich@MacBook-Air-M1-2020 webapp % dotnet --version
6.0.100-rc.2.21473.35
rich@MacBook-Air-M1-2020 webapp % dotnet watch run
watch : Hot reload enabled. For a list of supported edits, see https://aka.ms/dotnet/hot-reload. Press "Ctrl + R" to restart.
watch : Building...
  Determining projects to restore...
  All projects are up-to-date for restore.
  You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
  webapp -> /Users/rich/webapp/bin/Debug/net6.0/webapp.dll
watch : Started
info: Microsoft.Hosting.Lifetime[14]
      Now listening on: https://localhost:7117
info: Microsoft.Hosting.Lifetime[14]
      Now listening on: http://localhost:5182
info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Development
info: Microsoft.Hosting.Lifetime[0]
      Content root path: /Users/rich/webapp
watch : Shutdown requested. Press Ctrl+C again to force exit.
info: Microsoft.Hosting.Lifetime[0]
      Application is shutting down...

Unhandled exception. System.OperationCanceledException: The operation was canceled.
   at System.Threading.CancellationToken.ThrowOperationCanceledException()
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetSyntaxInputTable(ISyntaxInputNode syntaxInputNode)
   at Microsoft.CodeAnalysis.SyntaxInputNode`1.UpdateStateTable(Builder graphState, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetLatestStateTableForNode[T](IIncrementalGeneratorNode`1 source)
   at Microsoft.CodeAnalysis.TransformNode`2.UpdateStateTable(Builder builder, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetLatestStateTableForNode[T](IIncrementalGeneratorNode`1 source)
   at Microsoft.CodeAnalysis.BatchNode`1.UpdateStateTable(Builder builder, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetLatestStateTableForNode[T](IIncrementalGeneratorNode`1 source)
   at Microsoft.CodeAnalysis.CombineNode`2.UpdateStateTable(Builder graphState, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetLatestStateTableForNode[T](IIncrementalGeneratorNode`1 source)
   at Microsoft.CodeAnalysis.SourceOutputNode`1.UpdateStateTable(Builder graphState, NodeStateTable`1 previousTable, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.DriverStateTable.Builder.GetLatestStateTableForNode[T](IIncrementalGeneratorNode`1 source)
   at Microsoft.CodeAnalysis.SourceOutputNode`1.AppendOutputs(IncrementalExecutionContext context, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.GeneratorDriver.UpdateOutputs(ImmutableArray`1 outputNodes, IncrementalGeneratorOutputKind outputKind, CancellationToken cancellationToken, Builder driverStateBuilder)
   at Microsoft.CodeAnalysis.GeneratorDriver.RunGeneratorsCore(Compilation compilation, DiagnosticBag diagnosticsBag, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.FinalizeCompilationAsync(SolutionState solution, Compilation compilationWithoutGenerators, Nullable`1 authoritativeGeneratedDocuments, TextDocumentStates`1 nonAuthoritativeGeneratedDocuments, Compilation compilationWithStaleGeneratedTrees, GeneratorDriver generatorDriver, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.FinalizeCompilationAsync(SolutionState solution, Compilation compilationWithoutGenerators, Nullable`1 authoritativeGeneratedDocuments, TextDocumentStates`1 nonAuthoritativeGeneratedDocuments, Compilation compilationWithStaleGeneratedTrees, GeneratorDriver generatorDriver, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.BuildCompilationInfoFromScratchAsync(SolutionState solution, Nullable`1 authoritativeGeneratedDocuments, TextDocumentStates`1 nonAuthoritativeGeneratedDocuments, GeneratorDriver generatorDriver, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.BuildCompilationInfoAsync(SolutionState solution, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.GetOrBuildCompilationInfoAsync(SolutionState solution, Boolean lockGate, CancellationToken cancellationToken)
   at Microsoft.CodeAnalysis.SolutionState.CompilationTracker.GetCompilationSlowAsync(SolutionState solution, CancellationToken cancellationToken)
   at Microsoft.DotNet.Watcher.Tools.CompilationWorkspaceProvider.CreateProject(TaskCompletionSource`1 taskCompletionSource, Task`1 hotReloadCapabilitiesTask, String projectPath, IReporter reporter, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__127_1(Object state)
   at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()
   at System.Threading.Thread.StartCallback()

Yes, the operation was cancelled. Can we keep that on the DL?