Build failed. https://zuul.opendev.org/t/openstack/buildset/0fb07790bbd44cd1bb08c3dd18944862 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3fdc5c6bfca9405dbf74a9f51a05021e : FAILURE in 3m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/44255ec711a04a788bd62e4c673eee09 : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/324ed35ac702444691d81739fffe222b : SUCCESS in 2m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9c42f30578e944b38eefa209bbceae41 : SUCCESS in 3m 04s