INFO:root:Workspace dir: /var/lib/jenkins/workspace/charm_lint_check
INFO:root:Reading file: Makefile
INFO:root:Searching for: ['@flake8', '/flake8']
INFO:root:command:  make -f Makefile lint
ERROR:root:Make target returned non-zero.
  unit_tests/test_nova_compute_contexts.py:210:30: W291 trailing whitespace
  make: *** [lint] Error 1