Build failed. https://zuul.opendev.org/t/openstack/buildset/b7fbd7f3e378472986ad543d302315fb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/79f1d76e4f684081bb3e10efd9f9f2b0 : SUCCESS in 3m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c371c0975f254b8fb88ec9b6901dbca4 : SUCCESS in 2m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0bd71da288984d2eb2beac82b5af4884 : SUCCESS in 3m 59s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4b13197667354595b3a3e954b5cd0870 : FAILURE in 2m 56s