Build failed. https://zuul.opendev.org/t/openstack/buildset/2b701127b87d43ef9917d659da1d5a06 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/00ec24d6983e4745bc9df24a712b7554 : SUCCESS in 3m 00s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ab57ccabb0a34990bbd0e46bf0880a48 : SUCCESS in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fc8c8108c0354bcc994d2325f12b5840 : SUCCESS in 4m 39s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/87ec3d09832f4e9ab52ed7f4f02a4800 : FAILURE in 3m 31s