Build failed. https://zuul.opendev.org/t/openstack/buildset/b456efd8e5d0466294213728bd33b09c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9a9cfe5b03d34a918a29b6af44d3da33 : FAILURE in 5m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/76bb457dc8df40beabdd6fbebcada2fc : SUCCESS in 4m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/52b4720406a9467b8db400da3de7cb20 : SUCCESS in 5m 19s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/e378fe2d6c614fa890299dbad2013cd1 : SUCCESS in 5m 09s