Build failed. https://zuul.opendev.org/t/openstack/buildset/7d88f8a394ec43e5a02e04755dbf631d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/de1bb70d9ec448f697b8f042c15a5dda : FAILURE in 4m 41s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7afc0e0b69364d48abc1d8569e4531bc : FAILURE in 4m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/04f7db0a2d0749e4a647e15fe219bebf : FAILURE in 4m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6eb4e420f0624083a5935aea67ef829c : FAILURE in 5m 11s