Discovered: System.IO.FileSystem.Watcher.Tests (found 166 of 210 test cases)
Starting: System.IO.FileSystem.Watcher.Tests (parallel test collections = on [6 threads], stop on fail = off)
System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac(filesCount: 2) [FAIL]
Assert.Equal() Failure: Collections differ
↓ (pos 1)
Expected: ArraySelectIterator<<>f__AnonymousType1<string, string>, FiredEvent> [Deleted /tmp/helix/working/9FEF0885/t/#File_Move_Tests_r5rmsjek.mw5/dir_watched/file0 , Deleted /tmp/helix/working/9FEF0885/t/#File_Move_Tests_r5rmsjek.mw5/dir_watched/file1 ]
Actual: List<FiredEvent> [Deleted /tmp/helix/working/9FEF0885/t/#File_Move_Tests_r5rmsjek.mw5/dir_watched/file0 , Deleted /tmp/helix/working/9FEF0885/t/#File_Move_Tests_r5rmsjek.mw5/dir_watched/file0 , Deleted /tmp/helix/working/9FEF0885/t/#File_Move_Tests_r5rmsjek.mw5/dir_watched/file1 ]
↑ (pos 1)
Stack Trace:
/_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.File.Move.cs(234,0): at System.IO.Tests.File_Move_Tests.FileMove_Multiple_FromWatchedToUnwatched(Int32 filesCount, Boolean skipOldEvents)
/_/src/libraries/System.IO.FileSystem.Watcher/tests/FileSystemWatcher.File.Move.cs(48,0): at System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac(Int32 filesCount)
at System.Object.InvokeStub_File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac(Object, Span`1)
/_/src/libraries/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.cs(95,0): at System.Reflection.MethodBaseInvoker.InvokeWithOneArg(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
System.IO.Tests.FileSystemWatcherTests_netstandard17.DroppedWatcher_Collectible [SKIP]
Condition(s) not met: "IsPreciseGcSupported"
Finished: System.IO.FileSystem.Watcher.Tests
{
"ErrorMessage": "",
"ErrorPattern": "System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac.*FAIL",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1314668
Build error leg or test failing: System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac
Pull request: #125014
Error Message
Fill the error message using step by step known issues guidance.
{ "ErrorMessage": "", "ErrorPattern": "System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac.*FAIL", "BuildRetry": false, "ExcludeConsoleLog": false }Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1314668
Error message validated:
[System.IO.Tests.File_Move_Tests.File_Move_Multiple_From_Watched_To_Unwatched_Mac.*FAIL]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 3/1/2026 12:32:32 AM UTC
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