Build failed. https://zuul.opendev.org/t/openstack/buildset/3332c02d53ff4fecab21606f8af9d1af - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4e886d9b5576442b82be917de50afc4d : FAILURE in 3m 45s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b29f6fe0a4e46f9a570216d18247733 : SUCCESS in 3m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2da48b67b2d740fab0a322085b8f1ad5 : SUCCESS in 3m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f246e5a4db7d496f9cb45d78d3184e2e : SUCCESS in 4m 18s