Intermittent Crashes - Fatal error. Internal CLR error. (0x80131506)

[chaoticsoftware]

I've been getting these intermittent errors that are plaguing my build pipeline (down to ~60% pass rate) I haven't been able to reproduce this locally, or capture any meaningful data from the test runs in the pipeline. I can't even really tell what test(s) are hitting this error.

The active test run was aborted. Reason: Test host process crashed : Fatal error. Internal CLR error. (0x80131506)
   at System.Reflection.RuntimeModule.GetTypes(System.Reflection.RuntimeModule)
   at Xunit.Runner.VisualStudio.VsTestRunner.GetAvailableRunnerReporters(System.Collections.Generic.IEnumerable`1<System.String>)
   at Xunit.Runner.VisualStudio.VsTestRunner+<>c__DisplayClass23_0.<GetRunnerReporter>b__0()
   at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].ViaFactory(System.Threading.LazyThreadSafetyMode)
   at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].ExecutionAndPublication(System.LazyHelper, Boolean)
   at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].CreateValue()
   at System.Lazy`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].get_Value()
   at Xunit.Runner.VisualStudio.VsTestRunner.GetRunnerReporter(LoggerHelper, Xunit.Runner.VisualStudio.RunSettings, System.Collections.Generic.IEnumerable`1<System.String>)
   at Xunit.Runner.VisualStudio.VsTestRunner.RunTests(Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.IRunContext, Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.IFrameworkHandle, LoggerHelper, Xunit.Runner.VisualStudio.TestPlatformContext, Xunit.Runner.VisualStudio.RunSettings, System.Func`1<System.Collections.Generic.List`1<Xunit.Runner.VisualStudio.AssemblyRunInfo>>)
   at Xunit.Runner.VisualStudio.VsTestRunner.Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.ITestExecutor.RunTests(System.Collections.Generic.IEnumerable`1<System.String>, Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.IRunContext, Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.IFrameworkHandle)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Execution.RunTestsWithSources.InvokeExecutor(Microsoft.VisualStudio.TestPlatform.Common.ExtensionFramework.Utilities.LazyExtension`2<Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.ITestExecutor,Microsoft.VisualStudio.TestPlatform.Common.Interfaces.ITestExecutorCapabilities>, System.Tuple`2<System.Uri,System.String>, Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Adapter.RunContext, Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter.IFrameworkHandle)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Execution.BaseRunTests.RunTestInternalWithExecutors(System.Collections.Generic.IEnumerable`1<System.Tuple`2<System.Uri,System.String>>, Int64)
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Execution.BaseRunTests.RunTestsInternal()
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Execution.BaseRunTests.RunTests()
   at Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Execution.ExecutionManager.StartTestRun(System.Collections.Generic.Dictionary`2<System.String,System.Collections.Generic.IEnumerable`1<System.String>>, System.String, System.String, Microsoft.VisualStudio.TestPlatform.ObjectModel.Engine.ClientProtocol.TestExecutionContext, Microsoft.VisualStudio.TestPlatform.ObjectModel.Engine.ITestCaseEventsHandler, Microsoft.VisualStudio.TestPlatform.ObjectModel.Client.ITestRunEventsHandler)
   at Microsoft.VisualStudio.TestPlatform.CommunicationUtilities.TestRequestHandler+<>c__DisplayClass32_3.<OnMessageReceived>b__3()
   at Microsoft.VisualStudio.TestPlatform.CommunicationUtilities.TestRequestHandler+<>c.<.ctor>b__19_2(System.Action)
   at Microsoft.VisualStudio.TestPlatform.Utilities.JobQueue`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].SafeProcessJob(System.__Canon)
   at Microsoft.VisualStudio.TestPlatform.Utilities.JobQueue`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].BackgroundJobProcessor()
   at Microsoft.VisualStudio.TestPlatform.Utilities.JobQueue`1[[System.__Canon, System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].<.ctor>b__12_0()
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task+<>c.<.cctor>b__274_0(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef, System.Threading.Thread)
   at System.Threading.Tasks.Task.ExecuteEntryUnsafe(System.Threading.Thread)
   at System.Threading.Tasks.ThreadPoolTaskScheduler+<>c.<.cctor>b__10_0(System.Object)
   at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.ThreadHelper.ThreadStart(System.Object)

[nativenolde]

I'm affected by that too... has anybody a resolution or workaround?

[bitbonk]

@chaoticsoftware @nativenolde Just curios: Are you using Azure DevOps (Server). We do and we only ever see this error on the server.

[bradwilson]

Closing as an external issue (in Azure DevOps).