Task wasn't RunSynchronously with TaskScheduler specified

[MichalStrehovsky]

Seen in Native AOT Alpine x64 test legs only so far.

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=465740 Build error leg or test failing: System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest11 Pull request: https://github.com/dotnet/runtime/pull/94515

Error Message

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

{
  "ErrorMessage": "Task wasn't RunSynchronously with TaskScheduler specified",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/public/_build/results?buildId=465740 Error message validated: Task wasn't RunSynchronously with TaskScheduler specified Result validation: :white_check_mark: Known issue matched with the provided build. Validation performed at: 11/13/2023 7:00:11 AM UTC

Report

Build	Definition	Test	Pull Request
565658	dotnet/runtime	System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest10	dotnet/runtime#98022
561688	dotnet/runtime	System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest10
560825	dotnet/runtime	System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest10
559095	dotnet/runtime	System.Threading.Tasks.Tests.WorkItemExecution
552888	dotnet/runtime	System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest12
549969	dotnet/runtime	System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest10

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	6

[ghost]

Tagging subscribers to this area: @agocke, @MichalStrehovsky, @jkotas See info in area-owners.md if you want to be subscribed.

Issue Details

---

Seen in Native AOT Alpine x64 test legs only so far. ## Build Information Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=465740 Build error leg or test failing: System.Threading.Tasks.Tests.TaskRunSyncTests.TaskRunSyncTest11 Pull request: https://github.com/dotnet/runtime/pull/94515 ## Error Message Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Projects/Build%20Analysis/KnownIssues.md#how-to-fill-out-a-known-issue-error-section). ```json { "ErrorMessage": "Task wasn't RunSynchronously with TaskScheduler specified", "ErrorPattern": "", "BuildRetry": false, "ExcludeConsoleLog": false } ```

Author:	MichalStrehovsky
Assignees:	-
Labels:	`blocking-clean-ci`, `area-NativeAOT-coreclr`, `Known Build Error`
Milestone:	-

[MichalStrehovsky]

Disabling this test on musl in #99031.

This test has several different failure modes.

[dotnet-policy-service[bot]]

Tagging subscribers to this area: @dotnet/area-system-threading-tasks See info in area-owners.md if you want to be subscribed.

[ericstj]

It looks like the entirety of System.Threading.Tasks.Tests.csproj has been excluded from MUSL as part of this. @stephentoub @dotnet/area-system-threading-tasks are you OK with that?

[stephentoub]

There's little-to-no logic in Tasks that's OS-specific. I've not investigated the failure or the reason for it, but if it's disabled only on MUSL with NativeAOT, we have plenty of other validation in place such that I'm not concerned for now.