Traceback (most recent call last):


 "/home/ubuntu/anaconda3/lib/python3.6/threading.py", line 916, in _bootstrap_inner

self.run()


 "/home/ubuntu/anaconda3/lib/python3.6/threading.py", line 864, in run

self._target(*self._args, **self._kwargs)


 "/home/ubuntu/byteps/launcher/launch.py", line 47, in worker

subprocess.check_call(command, env=my_env, stdout=sys.stdout, stderr=sys.stderr, shell=True)


 "/home/ubuntu/anaconda3/lib/python3.6/subprocess.py", line 291, in check_call

raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command 'python3 tests/test_mxnet.py' returned non-zero exit status 255.

Traceback (most recent call last):


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwy0zjfmc\build\youtube_dl\YoutubeDL.py", line 796, in extract_info


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwy0zjfmc\build\youtube_dl\extractor\common.py", line 530, in extract


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwy0zjfmc\build\youtube_dl\extractor\sixplay.py", line 113, in _real_extract


 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpwy0zjfmc\build\youtube_dl\extractor\common.py", line 1327, in _sort_formats
youtube_dl.utils.ExtractorError: No video formats found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type
youtube-dl -U
to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.