Build failed. https://zuul.opendev.org/t/openstack/buildset/9651bbdc016649228e022ba0056caf01 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/cd3f7281eff949389078d9874e979185 : FAILURE in 2m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/182199fa263f4c6fa84c483c59105e18 : SUCCESS in 3m 01s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/49bd8868d0ba47f8bb59f2b67af05a71 : SUCCESS in 2m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e5a0ae4285234202b73ddfe7592386a7 : SUCCESS in 3m 35s