Build failed. https://zuul.opendev.org/t/openstack/buildset/d4102a05ee4c40a988c3ccbdb61b0526 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7ca48d031bea48659da4954d7b558e57 : SUCCESS in 4m 25s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a1f8ebea01e3406cb7e2e0a3313511f8 : SUCCESS in 6m 00s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/d5faf385082a4131bc0d5f9b8f27bb3e : SUCCESS in 4m 50s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4af8b8234b3042d49636778c1e7f5e71 : FAILURE in 4m 18s