Build failed. https://zuul.opendev.org/t/openstack/buildset/fa13ca977ea549d4b7ecde4d862b2eb5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2cb7be76ea0843d38e3a1b101efccbb5 : FAILURE in 2m 58s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/176a35148ec94458959f60a0792c835a : SUCCESS in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f17c5607446c44b4a514e707c7880d5f : SUCCESS in 2m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5b263e4667cd4b9fa73428350f609db2 : SUCCESS in 3m 18s