Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/04147fe415b64f2a968263436d55cf48 : SUCCESS in 4m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fcc6c7ca4c914acd8efff6282794fd80 : SUCCESS in 8m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d1f7e006a1444872b910e54dc60356a7 : SUCCESS in 7m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c468349750d040339061851fa9768a28 : FAILURE in 4m 17s