Build failed. https://zuul.opendev.org/t/openstack/buildset/f208f2a3fd504e6f9233d5a2ec41f78d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8480f43ddccf4c5c956135667956fb3a : FAILURE in 6m 38s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/129db40647c0492ba1a3725bbfb7a539 : SUCCESS in 6m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/026d78166c9149beb77deaacbd6df697 : SUCCESS in 5m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4f13b1a5e6ab448f8640930ce3b6ab10 : SUCCESS in 8m 56s