Build failed. https://zuul.opendev.org/t/openstack/buildset/51241cdf384d45fb9c415a86f2b740ec - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c6469f86e7e94e8c92fad8443804a3de : SUCCESS in 3m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b4c7fc4a1d3549cea1c4802397099ffd : FAILURE in 2m 42s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/8a1b0f2da7284ccf896125349db4f15e : SUCCESS in 3m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9be9407d8ced412b8f1c84f6897a5eae : SUCCESS in 3m 55s