Build failed. https://zuul.opendev.org/t/openstack/buildset/484b52c8ebe046cb8490e94e0d815cd9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2ee2ce7bb7c94c6489316e07a1203a1e : SUCCESS in 6m 46s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/742f82b51a2c45e6a8c4c4aee03b53f9 : SUCCESS in 3m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b838c89b162a44beacbfbca0041b2d1d : SUCCESS in 6m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/66d105865524498b976479118de1bda0 : FAILURE in 3m 03s