Build failed. https://zuul.opendev.org/t/openstack/buildset/cda83660f9c14a9d8993bcc83e381247 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/69044cc173434bf08365b148c4eb323b : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2c12a066fe0c46a6bb4dce4e9dcfb954 : FAILURE in 3m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c22c700481484500ae7ee8be343f2678 : SUCCESS in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/20bc8e50f85e4aae934007a3ac2a8ad1 : SUCCESS in 4m 13s