Build failed. https://zuul.opendev.org/t/openstack/buildset/d93ebfaf553c402fa768d2fb567c91b1 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/032571350bc44869967e9caa57049973 : FAILURE in 7m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c93737d1509b44bfbb32a86303b1e322 : SUCCESS in 5m 43s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9f29c67fbc7e408cbbf8b0a6e90b1fc4 : SUCCESS in 5m 54s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/0518e9a134fc4defb45366db80379630 : SUCCESS in 6m 42s