Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1c569d84ad454bb4af01ff02ead56612 : SUCCESS in 4m 42s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a8de4aa5d76f492fa539e4b001b46e13 : SUCCESS in 10m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8c54621daf154ff7a85f0f9e09c89f3b : FAILURE in 6m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b3eeea2187a94033841841f513442cd6 : FAILURE in 7m 49s