Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a659bd49553a49679ef0aa2526c009db : SUCCESS in 6m 37s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ece8541bd9314349ace8d7c46610c9c4 : SUCCESS in 6m 17s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2bf2fd250e8d467f8a28b95769e8efa1 : SUCCESS in 6m 38s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/db57415c6b0b444dacd0901a2270a004 : FAILURE in 6m 34s