Build failed. https://zuul.opendev.org/t/openstack/buildset/c4b6537d04f4492e994914392300665b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/6c1dd859f0ec4c67a52b5de09d5f77a7 : SUCCESS in 3m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/accd15c166ac4bd4a283c6fe774f3dc6 : SUCCESS in 2m 39s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/679da81c33fa44b2b562a7a8ee69d594 : SUCCESS in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dd03e82b446c489fbda0febe19a3e561 : FAILURE in 3m 19s