Build failed. https://zuul.opendev.org/t/openstack/buildset/9ffc67ddd7b244e9beb6517de1a664e3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5d6dd68070644ad1b2e1a168b5b11979 : FAILURE in 4m 21s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b07f7d776f714db68d572a352461b0e5 : FAILURE in 3m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/be73d93da2f44fa9af1cc2f83531830a : FAILURE in 4m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2276937f10aa473a9027bc3795439351 : FAILURE in 4m 07s