Hi, I believe our Jenkins environment is somehow broken, but it's hard to tell which file is not found and there's no way to enable stacktraces either (how do you pass `debug` to main()?). From our CI logs: ``` 14:21:34 ==> Detecting CI provider 14:21:34 Jenkins Detected 14:21:34 Fixing merge commit SHA 14:21:34 ==> Preparing upload 14:21:34 Error: 'FileNotFoundError' object has no attribute 'returncode' ``` Full log: https://ci-beam.apache.org/job/beam_PreCommit_Python_Commit/16554/consoleFull I believe the issue is with this line: https://github.com/codecov/codecov-python/blob/713d94113e9b1189f227adc6131f04c65e4f967b/codecov/__init__.py#L229