Build failed. https://zuul.opendev.org/t/openstack/buildset/0da128de91344b86bf14d4e0cb63a8e7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2ab0009b9a95426988ffb625e6be2e98 : SUCCESS in 3m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d033f783d7ba41e0847bc31e64b65a3e : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/42c05a7d332b456e85b736713f80bd99 : SUCCESS in 2m 55s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/165fe3f2d96b4fa39dd512fa63f9964c : FAILURE in 4m 33s