Build failed. https://zuul.opendev.org/t/openstack/buildset/b6d1659e6d0b4927b9525941aa6f0880 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/67f73f4ac4cf4f409e1432708157053b : SUCCESS in 3m 48s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0734475941ef4d47a3b87a889bf5ecba : SUCCESS in 4m 20s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/50f0b719e87c4db79d3ffb08301fefc5 : SUCCESS in 4m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/cac079620471448ea1c3a6ff524fe17f : FAILURE in 4m 45s