Build failed. https://zuul.opendev.org/t/openstack/buildset/334e0c2c8ee64245aa170eb542877600 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d45781789e7b4c02b12e038837edf734 : FAILURE in 6m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/1eb649a11e954f989b99305bc051ddab : SUCCESS in 6m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c9a80b2ff18b4d61a4df3702bb47ebc0 : SUCCESS in 6m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/91aed9b44acf4327804280e26c4f6fa3 : SUCCESS in 6m 56s