Build failed. https://zuul.opendev.org/t/openstack/buildset/5dd8a5c469ed40ac8a7c62154cf847f7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3e1ec577124f4efdb84b6d650725359b : SUCCESS in 2m 55s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0646f929d948423cbdbfb13547c652e4 : SUCCESS in 2m 25s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/6ea6469db61249ef91a8c228b144de1a : SUCCESS in 3m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/386812c50fc04e0da73164a152424818 : FAILURE in 2m 36s