[FAIL] System.IO.Tests.Directory_Delete_MountVolume.RunTest
Assert.True() Failure
Expected: True
Actual:   False
   at System.IO.Tests.Directory_Delete_MountVolume.RunTest() in /_/src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/Directory/Delete_MountVolume.cs:line 378

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1325097
Build error leg or test failing: System.IO.Tests.Directory_Delete_MountVolume.RunTest
Pull request: #125286

Error Message

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

{
  "ErrorMessage": ["[FAIL] System.IO.Tests.Directory_Delete_MountVolume.RunTest","Actual:   False"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1325097
Error message validated: [[FAIL] System.IO.Tests.Directory_Delete_MountVolume.RunTest Actual: False]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 3/7/2026 9:05:22 PM UTC

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Summary