Build failed. https://zuul.opendev.org/t/openstack/buildset/3f9bc2c3475b4fc282831f06b81db342 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/77bd32e3d3c8447bb2516957bdae6b2f : FAILURE in 3m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b3f103700b9e4547804586f1efc9e054 : SUCCESS in 3m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bd898b985ddd4c67ac83c79d5b0782d0 : SUCCESS in 5m 05s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/aaf1b7edfc864f8898e47ab79e110e11 : SUCCESS in 5m 10s