System.IO.Compression.GzipStreamUnitTests.Write_DataReadFromDesiredOffset failed

[runfoapp]

Runfo Tracking Issue: System.IO.Compression.GzipStreamUnitTests.Write_DataReadFromDesiredOffset

Build	Definition	Kind	Run Name

Build Result Summary

Day Hit Count	Week Hit Count	Month Hit Count
0	0	0

[safern]

The test fails with:

 System.NullReferenceException : Object reference not set to an instance of an object.
      Stack Trace:
        /_/src/libraries/System.IO.Compression/src/System/IO/Compression/GZipStream.cs(142,0): at System.IO.Compression.GZipStream.Dispose(Boolean disposing)
        /_/src/libraries/System.Private.CoreLib/src/System/IO/Stream.cs(154,0): at System.IO.Stream.Close()
        /_/src/libraries/Common/tests/Tests/System/IO/StreamConformanceTests.cs(1841,0): at System.IO.Tests.StreamPair.Dispose()
        /_/src/libraries/Common/tests/Tests/System/IO/StreamConformanceTests.cs(890,0): at System.IO.Tests.ConnectedStreamConformanceTests.Write_DataReadFromDesiredOffset(ReadWriteMode mode)

cc: @ericstj @carlossanlop

[stephentoub]

#44069 should fix this

[safern]

@stephentoub this seems to still happen. I just hit this on my PR, and according to runfo, it failed 3 times today and 6 times this week.

https://runfo.azurewebsites.net/tracking/issue/83
https://dev.azure.com/dnceng/public/_build/results?buildId=904700&view=ms.vss-test-web.build-test-results-tab&runId=28874462&resultId=151475&paneView=debug