Build failed. https://zuul.opendev.org/t/openstack/buildset/d2b4f696d2774f0fb8a6e3ac7607347b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c797bea491b84ee6bed9e95a1f6657ca : FAILURE in 4m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/80e93030c04945839f33c0147a9eb13b : FAILURE in 5m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/752e8fd93873491598e8f2550b5ca9a4 : FAILURE in 7m 42s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f033c00a1293403aaca6e8c315896c39 : FAILURE in 6m 33s