Build failed. https://zuul.opendev.org/t/openstack/buildset/13576d4ef6f6484997a11c7f73b0a159 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7e2f7c872f1a461aac4d90ee2a06831d : SUCCESS in 3m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/977d9adf5b1644d5b97a98997683b9ed : SUCCESS in 3m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/953ba1f0c8ef4d6680f21b7e607ef698 : FAILURE in 3m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/681b8ee8826449de8617335373cb1356 : FAILURE in 5m 33s