[browser][wbt] fails with `InvalidOperationException: There is no currently active test`

[ilonatommy]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=751591
Build error leg or test failing: Workloads-NoWebcil-NoFingerprint-ST-Wasm.Build.Tests.WorkItemExecution
Pull request: #105302

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Unhandled exception. System.InvalidOperationException: There is no currently active test.",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=751591
Error message validated: [Unhandled exception. System.InvalidOperationException: There is no currently active test.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/23/2024 1:57:11 PM UTC

Report

Build	Definition	Test	Pull Request
1092304	dotnet/runtime	Workloads-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution
1091322	dotnet/runtime	Workloads-NoWebcil-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#117482
1090113	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution
1089127	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution
1088757	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#116626
1085579	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution
1085502	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#116626
1085274	dotnet/runtime	Workloads-NoWebcil-ST-Wasm.Build.Tests.WasmSIMDTests.WorkItemExecution	#117283
1083216	dotnet/runtime	Workloads-ST-Wasm.Build.Tests.WasmBuildAppTest.WorkItemExecution	#116626

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	9

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[maraf]

I'm not able to reproduce it locally. It doesn't seem related to fingerprinting.
The message comes from xunit orchestration. It looks like a race condition.

[maraf]

@mkhamoyan Can you please look into this one? It's quite low priority (if don't start happening more often, but it doesn't seem so far). The exception comes from ToolCommand https://github.com/dotnet/runtime/blob/main/src/mono/wasm/Wasm.Build.Tests/Common/ToolCommand.cs#L110
My theory is that the process output arrives in .NET after the waiting for process to finish (as thus the test finished). Something like unsubscribing the handlers after the wait might be enough.