Build failed. https://zuul.opendev.org/t/openstack/buildset/ddfd6ad125a94cd387803c0076fafd7f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/599678d882ec4bc5af73fc54947104b9 : FAILURE in 3m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ef776d32b63e46abb7db9022426150b0 : FAILURE in 3m 58s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/16d9254494fa4d3084fba85bf7157abc : FAILURE in 3m 29s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/427df3715bed45b384bb5a492e8fb224 : FAILURE in 5m 17s