Build failed. https://zuul.opendev.org/t/openstack/buildset/e87c805d6ec146ac8a3514c8cbae3362 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2ea9ee6db3f641bf91cf255f6a3c5abb : SUCCESS in 3m 14s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4bb9708ce7f449f0a62c6ea5abda9a23 : SUCCESS in 4m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/50a421af67f24b66818b9a921cae1e03 : FAILURE in 3m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/1d80bd4a217b4ba7a6d7f9f046cf9fcb : FAILURE in 2m 26s