Build failed. https://zuul.opendev.org/t/openstack/buildset/8b1e4960042d4563831d6fcb1b59c099 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0dc92b2ece8145219ed437a577be9bc9 : SUCCESS in 4m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/79f48d7b4c764826ac0d0318c28fe9fb : SUCCESS in 3m 51s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/ef6a865453ef4fc48504249cc0374eb1 : SUCCESS in 4m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6fb5206b38b34b238c8c36d03eaf851c : FAILURE in 4m 16s