Build failed. https://zuul.opendev.org/t/openstack/buildset/ba8bfec3a9b34950af60190a293a17d1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/bfcd3373470e4074bf1a6cb9331414ef : SUCCESS in 4m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c243fb1e7f134e9784a78ba1e9a4706b : SUCCESS in 4m 37s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/349957f489ec48b2800ff5e1fd1ec845 : SUCCESS in 4m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f779b0d70a174f5790dbf694f7a04422 : FAILURE in 4m 24s