Build failed. https://zuul.opendev.org/t/openstack/buildset/f8eaabc54a354032bd4fad32f7f09387 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/79c1aeeae168405997890f835cf00aae : SUCCESS in 3m 12s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5e1d0a31d3ab4ed4ad042570b7d001cb : SUCCESS in 3m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2b9f5ee44a3e4b3985b285f75de27d5b : SUCCESS in 2m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/015bacae8cbd4ed1b7161f98497d36f6 : FAILURE in 3m 11s