Expected async boundary frames [V1.MoveNextAsDispatcher] (leaf->root) were not all present in order. Captured boundaries (leaf->root): [].
at System.Threading.Tasks.Tests.AsyncProfilerTests.AssertBoundarySubsequence(List`1 capturedLeafToRoot, String[] expectedLeafToRoot) in /_/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerTests.cs:line 265
at System.Threading.Tasks.Tests.AsyncProfilerTests.StateMachineAsync_ResumeDispatchStack() in /_/src/libraries/System.Runtime/tests/System.Threading.Tasks.Tests/System.Runtime.CompilerServices/AsyncProfilerV1Tests.cs:line 3409
at System.RuntimeMethodHandle.InvokeMethod(ObjectHandleOnStack target, Void** arguments, ObjectHandleOnStack sig, BOOL isConstructor, ObjectHandleOnStack result)
at System.RuntimeMethodHandle.InvokeMethod(ObjectHandleOnStack target, Void** arguments, ObjectHandleOnStack sig, BOOL isConstructor, ObjectHandleOnStack result)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) in /_/src/libraries/System.Private.CoreLib/src/System/Reflection/RuntimeMethodInfo.cs:line 134
{
"ErrorMessage": "Expected async boundary frames",
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1544255
Build error leg or test failing: System.Threading.Tasks.Tests.AsyncProfilerTests.StateMachineAsync_ResumeDispatchStack
Pull request: #131991
Error Message
{ "ErrorMessage": "Expected async boundary frames", "ErrorPattern": "", "BuildRetry": false, "ExcludeConsoleLog": false }Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1544255
Error message validated:
[Expected async boundary frames]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/7/2026 7:52:17 PM UTC
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