File "/usr/share/python-wheels/urllib3-1.13.1-py2.py3-none-any.whl/urllib3/connectionpool.py", line 610, in urlopen _stacktrace=sys.exc_info()[2]) File "/usr/share/python-wheels/urllib3-1.13.1-py2.py3-none-any.whl/urllib3/util/retry.py", line 228, in increment total -= 1 TypeError: unsupported operand type(s) for -=: 'Retry' and 'int' You are using pip version 8.1.1, however version 19.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. The command '/bin/sh -c pip3 install --upgrade pip' returned a non-zero code: 2 ERROR: Job failed: command terminated with exit code 2