Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/97cf188190e7448e874b33c8195ad531 : SUCCESS in 4m 20s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bb22387042024989a49a092b5a5c6384 : FAILURE in 3m 14s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/0609bb54d78442ff934a6d23fa18658b : SUCCESS in 4m 10s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8d670465dc9d471b8ebeda55ff4f1d1d : SUCCESS in 4m 35s