Test failure: Microsoft.Extensions.Hosting.Internal.HostTests.HostLifetimeOnStartedCanBeCancelled

[v-wenyuxu]

Failed in: runtime-coreclr libraries-pgo 20241228.1

Failed tests:

net10.0-windows-Release-x64-fullpgo_methodprofiling-Windows.10.Amd64.Open
    - Microsoft.Extensions.Hosting.Internal.HostTests.HostLifetimeOnStartedCanBeCancelled

Error message:

 Assert.True() Failure
Expected: True
Actual:   False

Stack trace:

   at Microsoft.Extensions.Hosting.Internal.HostTests.HostLifetimeOnStartedCanBeCancelled() in /_/src/libraries/Microsoft.Extensions.Hosting/tests/UnitTests/Internal/HostTests.cs:line 488
--- End of stack trace from previous location ---

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[steveharter]

Test code hasn't changed since it was added 6 years ago: https://github.com/dotnet/runtime/blame/9e28706dbc252e27174dce1a3b8f69c8ecc912b7/src/libraries/Microsoft.Extensions.Hosting/tests/UnitTests/Internal/HostTests.cs#L488

It is waiting for 5 seconds until lifetimeStart is signaled.

Assert.True(lifetimeStart.WaitOne(TimeSpan.FromSeconds(5)));

However that is done on a Task via Task.Run(() => host.StartAsync()); so that may not always be reliable.

Will wait to see if there are any other hits.

Possible PGO issue?