Build failed. https://zuul.opendev.org/t/openstack/buildset/771672532a4e4fcaa394cf036c8303a7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/1b31a8615a2944bdbf8fdb9e84b5d608 : SUCCESS in 3m 09s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ffb6c93dc5204f1fa63ea9e21775224b : SUCCESS in 3m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/47ffb93c8a244147ae05b6677441aac9 : FAILURE in 3m 53s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/adb6569729034bfe835b5452ee02fb09 : FAILURE in 3m 21s