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Reporting xUnit tests results to AzDO Tests Explorer is broken on Linux x64

See original GitHub issue

Reporting xUnit tests results is broken on Linux x64: https://mc.dot.net/#/user/coreclr-ci/pr~2Fdotnet~2Fcoreclr~2Frefs~2Fpull~2F24554~2Fmerge/test~2Ffunctional~2Fcli~2F/20190513.718/workItem/PayloadGroup0/wilogs

2019-05-13T22:02:21Z
+ /home/helixbot/.vsts-env/bin/python /home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Payload/reporter/run.py https://dev.azure.com/dnceng/ public 4525536 eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Im9PdmN6NU1fN3AtSGpJS2xGWHo5M3VfVjBabyJ9.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.Egffj6Srw_6x9HBecHGrqasUhMUVvzSSc-X3s987NOU-uCrA8KUNW5XsbAk4skIOUnmDZ4xevSJ8I_VPbA9s7I4fsr4DW7UT3tSGUCM7M-MJ3_DiQmBYPzTNxaVkUr2r9J9CjjS3uAIxCL3wzBAmiJuxiOW5u2AswN2-OEt5T3MBFTT3Pn1_RpKsvkSxsJhGUOlLbHMXuqBpBnEsCknL4fvjN40CRSdat5O_exYE5FdRJ9J23t-zCQpmCcn3_qCeWnp_0ryCv2Kn6-wnwUy4oQTI3F47cCjCy0ma2MXxsjJmY0V6FUOqQrB4DVt1h8D89mXOztd36k_UN0u-C2gAqA
Got args https://dev.azure.com/dnceng/ public 4525536 eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsIng1dCI6Im9PdmN6NU1fN3AtSGpJS2xGWHo5M3VfVjBabyJ9.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.Egffj6Srw_6x9HBecHGrqasUhMUVvzSSc-X3s987NOU-uCrA8KUNW5XsbAk4skIOUnmDZ4xevSJ8I_VPbA9s7I4fsr4DW7UT3tSGUCM7M-MJ3_DiQmBYPzTNxaVkUr2r9J9CjjS3uAIxCL3wzBAmiJuxiOW5u2AswN2-OEt5T3MBFTT3Pn1_RpKsvkSxsJhGUOlLbHMXuqBpBnEsCknL4fvjN40CRSdat5O_exYE5FdRJ9J23t-zCQpmCcn3_qCeWnp_0ryCv2Kn6-wnwUy4oQTI3F47cCjCy0ma2MXxsjJmY0V6FUOqQrB4DVt1h8D89mXOztd36k_UN0u-C2gAqA
Main thread starting workers
Worker 0: starting...
Worker 1: starting...
Worker 2: starting...
Worker 3: starting...
Worker 4: starting...
Worker 5: starting...
Worker 6: starting...
Worker 7: starting...
Worker 8: starting...
Worker 9: starting...
Beginning reading of test results.
Uploading results in batches of size 1000
Searching '/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Work/13f5408e-1bb3-4335-b55b-eaf068ba88d8/Exec/..' for log files
Found log '/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Work/13f5408e-1bb3-4335-b55b-eaf068ba88d8/Exec/../console.5ccdf8cc.log'
Uri 'https://helixexternalresults.blob.core.windows.net/dotnet-coreclr-refs-pull-24554-merge-2aacd47635e3460593/PayloadGroup0/console.5ccdf8cc.log?sv=2017-07-29&sr=c&sig=yFjaDlTTu%2FIvJMOHcjc1qHnXGcB62Ih0VNA7Sb19ycA%3D&se=2019-05-23T21%3A38%3A41Z&sp=rl'
Generated log list: <ul><li><a href='https://helixexternalresults.blob.core.windows.net/dotnet-coreclr-refs-pull-24554-merge-2aacd47635e3460593/PayloadGroup0/console.5ccdf8cc.log?sv=2017-07-29&sr=c&sig=yFjaDlTTu%2FIvJMOHcjc1qHnXGcB62Ih0VNA7Sb19ycA%3D&se=2019-05-23T21%3A38%3A41Z&sp=rl' target='_blank'>console.5ccdf8cc.log</a></li></ul>
Searching '/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Work/13f5408e-1bb3-4335-b55b-eaf068ba88d8/Exec' for test results files
Found results file /home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Work/13f5408e-1bb3-4335-b55b-eaf068ba88d8/Exec/testResults.xml with format xunit
Main thread finished queueing batches
Worker 0: got error: Traceback (most recent call last):
  File "/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Payload/reporter/run.py", line 39, in run
    self.__process(item)
  File "/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Payload/reporter/run.py", line 30, in __process
    self.publisher.upload_batch(batch)
  File "/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Payload/reporter/azure_devops_result_publisher.py", line 36, in upload_batch
    self.publish_results(test_case_results, results_with_attachments)
  File "/home/helixbot/work/2aacd476-35e3-4605-9309-088d644680c4/Payload/reporter/azure_devops_result_publisher.py", line 57, in publish_results
    stream=base64.b64encode(text(attachment.text)),
  File "/home/helixbot/.vsts-env/lib/python3.6/base64.py", line 58, in b64encode
    encoded = binascii.b2a_base64(s, newline=False)
TypeError: a bytes-like object is required, not 'str'

Main thread exiting

@alexperovich @sandreenko