Build failed. https://zuul.opendev.org/t/openstack/buildset/b3823306fc6441b5818dc81b99bee559 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4cd92bf2bb9944308bd4f6741a446ba9 : SUCCESS in 4m 29s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/99d485b4a8b44ce491250a8664921068 : SUCCESS in 4m 16s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a0de9a02ed7441369497515371221dd2 : SUCCESS in 3m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b7c8d59bebfe42338c4672cc04ef2cef : FAILURE in 2m 50s