Build failed. https://zuul.opendev.org/t/openstack/buildset/98f84f32b1bb4f2bbd11403beaeec616 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5efc4390b7bb40aa9770c9731879cddd : SUCCESS in 2m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b4bbbb6ea58d439189acf8a6d33f8e41 : SUCCESS in 2m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c07bb30d68414302abf49ba0c28c31e9 : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b7ba8b372ca1416998727e36a8686ba6 : FAILURE in 2m 50s