Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a75132ee1a5a47889cb7d765a3cb1e0a : SUCCESS in 6m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b5f754a532c044e69c4653d3ed940e5c : SUCCESS in 5m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/e3b54238d28d4dc68ef405e333c0f3a8 : SUCCESS in 6m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/a612e8964fcc49cd99600330e229ae5f : FAILURE in 6m 20s