Build failed. https://zuul.opendev.org/t/openstack/buildset/e8bb1caaf385442b8c8995e48210a26b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/b3e5fb66fd5042a68d910a705ae261b9 : SUCCESS in 3m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/3f5cb2cb31c843dd93dba8c0a5ea5099 : SUCCESS in 3m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/99c6c16e09f54d4a8bd66077b2060278 : FAILURE in 3m 51s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7b82dd1449284f50bb98dc50e6f728a5 : FAILURE in 4m 13s