Build failed. https://zuul.opendev.org/t/openstack/buildset/590c608ece4f4ce5b37aa23679311c4d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e19e1568c1ba482f93d6ace99eed17a8 : SUCCESS in 4m 19s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d5363d4766e648489283e1a2f60d0c92 : SUCCESS in 4m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/313a62ce8e3e4224840f15c31e153e84 : SUCCESS in 4m 17s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/147cb946f3714266bd4dddb98f4977a6 : FAILURE in 4m 16s