Build failed. https://zuul.opendev.org/t/openstack/buildset/a25715a5c7b94d89a716b48dc23b27f5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1df57687b55a4a8f8556d6a8161e6c4e : FAILURE in 3m 44s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/e5635c41a92b4bda8cedbb314cb8fbf0 : SUCCESS in 4m 46s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/59e2cf3f099a4482ada26ad7219ffdcc : SUCCESS in 3m 36s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/10b1df6ca88a4543892446d7a83f5ef9 : SUCCESS in 3m 55s