UnboundLocalError: local variable 'process' referenced before assignment

[jongiddy]

It's possible for capture_both/run to fail here, and process is not defined in the exception handler.

dcos-e2e/src/dcos_e2e/_subprocess_tools.py

Lines 103 to 125 in 3e5eae8

	if pipe_output:
	process = sarge.capture_both(args, cwd=cwd, env=env, async_=True)
	while all(
	command.returncode is None for command in process.commands
	):
	_read_output(process=process)
	process.poll_all()
	time.sleep(0.05)
	_read_output(process=process)
	else:
	process = sarge.run(args, cwd=cwd, env=env, async_=True)
	stdout_logger.flush()
	stderr_logger.flush()
	# stderr/stdout are not readable anymore which usually means
	# that the child process has exited. However, the child
	# process has not been wait()ed for yet, i.e. it has not yet
	# been reaped. That is, its exit status is unknown. Read its
	# exit status
	process.wait()
	except Exception: # pragma: no cover pylint: disable=broad-except
	for popen_process in process.processes: