Test Failure: IHostApplicationLifetimeRegisteredEvenWhenStartupCtorThrows_Fallback

[sebastienros]

Build: https://dev.azure.com/dnceng/public/_build/results?buildId=1024610&view=results

 Failed Microsoft.AspNetCore.Hosting.WebHostBuilderTests.IHostApplicationLifetimeRegisteredEvenWhenStartupCtorThrows_Fallback(builder: GenericWebHostBuilderWrapper { }) [2 ms]
  Error Message:
   Assert.Equal() Failure
           ↓ (pos 1)
Expected: 0123456789abcdef
Actual:   0000000000000000
           ↑ (pos 1)
  Stack Trace:
     at Microsoft.AspNetCore.Hosting.Tests.HostingApplicationDiagnosticsTests.<>c.<ActivityListenersAreCalled>b__17_2(Activity activity) in /_/src/Hosting/Hosting/test/HostingApplicationDiagnosticsTests.cs:line 506
   at System.Diagnostics.ActivitySource.<>c.<NotifyActivityStart>b__24_0(ActivityListener listener, Object obj)
   at System.Diagnostics.SynchronizedList`1.EnumWithAction(Action`2 action, Object arg)
   at System.Diagnostics.ActivitySource.NotifyActivityStart(Activity activity)
   at System.Diagnostics.Activity.Start()
   at Microsoft.AspNetCore.Hosting.HostingApplicationDiagnostics.StartActivity(HttpContext httpContext, Boolean loggingEnabled, Boolean diagnosticListenerActivityCreationEnabled, Boolean& hasDiagnosticListener) in /_/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs:line 309
   at Microsoft.AspNetCore.Hosting.HostingApplication.CreateContext(IFeatureCollection contextFeatures) in /_/src/Hosting/Hosting/src/Internal/HostingApplication.cs:line 80
   at Microsoft.AspNetCore.Hosting.WebHostBuilderTests.TestServer.<>c__DisplayClass8_0`1.<<StartAsync>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Hosting.WebHostBuilderTests.AssertResponseContains(RequestDelegate app, String expectedText) in /_/src/Hosting/Hosting/test/WebHostBuilderTests.cs:line 1505
   at Microsoft.AspNetCore.Hosting.WebHostBuilderTests.IHostApplicationLifetimeRegisteredEvenWhenStartupCtorThrows_Fallback(IWebHostBuilder builder) in /_/src/Hosting/Hosting/test/WebHostBuilderTests.cs:line 177
--- End of stack trace from previous location ---
  Passed Microsoft.AspNetCore.Hosting.WebHostBuilderTests.CodeBasedSettingsCodeBasedOverride(builder: WebHostBuilder { }) [< 1 ms]
  Passed Microsoft.AspNetCore.Hosting.WebHostBuilderTests.CodeBasedSettingsCodeBasedOverride(builder: GenericWebHostBuilderWrapper { }) [< 1 ms]
Application startup exception: System.IO.FileNotFoundException: Could not load file or assembly 'MissingStartupAssembly, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.

File name: 'MissingStartupAssembly, Culture=neutral, PublicKeyToken=null'
   at System.Reflection.RuntimeAssembly.InternalLoad(ObjectHandleOnStack assemblyName, ObjectHandleOnStack requestingAssembly, StackCrawlMarkHandle stackMark, Boolean throwOnFileNotFound, ObjectHandleOnStack assemblyLoadContext, ObjectHandleOnStack retAssembly)
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, RuntimeAssembly requestingAssembly, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, AssemblyLoadContext assemblyLoadContext)
   at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
   at Microsoft.AspNetCore.Hosting.StartupLoader.FindStartupType(String startupAssemblyName, String environmentName) in /_/src/Hosting/Hosting/src/Internal/StartupLoader.cs:line 237
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.BuildCommonServices(AggregateException& hostingStartupErrors) in /_/src/Hosting/Hosting/src/WebHostBuilder.cs:line 302
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Hosting.WebHostBuilder.<>c__DisplayClass14_2.<BuildCommonServices>b__2(IServiceProvider _) in /_/src/Hosting/Hosting/src/WebHostBuilder.cs:line 323
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.ResolveService(ServiceCallSite callSite, RuntimeResolverContext context, RuntimeResolverLock lockType, ServiceProviderEngineScope serviceProviderEngine)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite callSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Microsoft.AspNetCore.Hosting.WebHost.EnsureStartup() in /_/src/Hosting/Hosting/src/Internal/WebHost.cs:line 209
   at Microsoft.AspNetCore.Hosting.WebHost.EnsureApplicationServices() in /_/src/Hosting/Hosting/src/Internal/WebHost.cs:line 196
   at Microsoft.AspNetCore.Hosting.WebHost.Initialize() in /_/src/Hosting/Hosting/src/Internal/WebHost.cs:line 122
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication() in /_/src/Hosting/Hosting/src/Internal/WebHost.cs:line 226

[JunTaoLuo]

Duplicate of #30582

[JunTaoLuo]

The true culprit is ActivityListenersAreCalled which I am disabling in https://github.com/dotnet/aspnetcore/pull/30672/files