Build failed. https://zuul.opendev.org/t/openstack/buildset/5e224e433da94c94872e00c782d3d9c9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/278c45936d394b648cc500b9797d8491 : SUCCESS in 4m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f03e5640600845c9b35c41c507851db9 : SUCCESS in 6m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/02b7a27114c1414cadb5b61d7165a622 : SUCCESS in 6m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e174d7fecc534402b636468927b6844d : FAILURE in 4m 10s