Build failed. - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/31471da05db747d4b08532ec67f173ed : FAILURE in 4m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/624372f913a24abf9a7a7577dfc566b4 : FAILURE in 4m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6363588a1f054f329ef24e4a1448c07e : FAILURE in 4m 15s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/89816102b4cc4778b56b7ec7459dab69 : FAILURE in 4m 07s