Build failed. https://zuul.opendev.org/t/openstack/buildset/65cb00a899bc4cdca72028bce2a67567 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/105f6ccd4cf8430e934c2e4e739a597d : SUCCESS in 3m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b0d194319deb4fd2b13de639050f5094 : SUCCESS in 2m 38s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d78417c1471f4e91852b095f007217e6 : FAILURE in 3m 37s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/be4649831e0846ec889db3b970d07ee6 : FAILURE in 2m 53s