Build failed. https://zuul.opendev.org/t/openstack/buildset/41d440aa39b74b9dafb8eedd413784b2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e87f3680ee604a188e723ebf7ac06bab : FAILURE in 5m 35s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7cd5d260fcdd447fbb8c7de5efcbb411 : SUCCESS in 6m 28s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dfba3af7eac34297ab50cb1a3a99af86 : SUCCESS in 6m 40s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/02d609f8a6ef483ab85cb8fa78f5f386 : SUCCESS in 8m 18s