Build failed. https://zuul.opendev.org/t/openstack/buildset/7bb06da449a348f28e78fe27a8ba3a98 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f5e5fca68f334581bee376aac96be153 : SUCCESS in 3m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/28ca6c9881c04389bea3eeb2302de0dc : FAILURE in 2m 54s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/59779234304a48bbb600b3335368c53d : SUCCESS in 4m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8d94be52794d463baffb577b571545d6 : FAILURE in 2m 47s