Build failed. https://zuul.opendev.org/t/openstack/buildset/187d01ed93fc4032b71dd8ad9ab638e8 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2ebbfa7afd3d4d8986cde6d498f5d799 : SUCCESS in 7m 53s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/097def09da674edba9c3ac0c08d35291 : SUCCESS in 7m 10s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/47f781cc47c84feba5eabff00a8d9c85 : RETRY_LIMIT in 7s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d4c8c2a09ad04c60853e36490e8b8338 : RETRY_LIMIT in 7s