Build failed. https://zuul.opendev.org/t/openstack/buildset/6118e8c70e7c4e07b9c3028d43a72f74 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/555863680118484691c1978cc374e80f : SUCCESS in 3m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/db00cb617fd94cfba198b96604dde4b4 : SUCCESS in 2m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/efd77b952b4b4b51b40db35be457c62e : SUCCESS in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e39c6f063da44d2694ea985b139c5606 : FAILURE in 3m 41s