Build failed. https://zuul.opendev.org/t/openstack/buildset/23097858c13c4868b47ff0255305923b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d297ea90c3a54b50b69cd025270dfb04 : SUCCESS in 12m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ea00add04eb64d5898576ba24ce1d12f : SUCCESS in 9m 29s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d4df9840be594cc08075de097db9bfb4 : FAILURE in 9m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f64aa7e71ea548dcb621f847e0c9d952 : SUCCESS in 11m 08s