Build failed. https://zuul.opendev.org/t/openstack/buildset/6cedcbf3784843f48fe9d3275adc7564 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/26086f358bd94768a7c0121b31878ec0 : SUCCESS in 3m 56s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c7dc2b89503c4452a22dc5fab18b52d2 : SUCCESS in 4m 26s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f67bec964cd946619f42942e0e8cf917 : FAILURE in 4m 26s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5b080d0d90884f82985ba46e337d6d5d : FAILURE in 4m 30s