Build failed. https://zuul.opendev.org/t/openstack/buildset/d5fd1231cb3840c2bda8bd6074d4cc99 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0c1b3cb04a7b45f4bbfdcc6b7be2c4a7 : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/2f799b09b234457a8e85f9fb5134a51f : SUCCESS in 3m 34s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5907c58714e34e99a239f831c900af41 : FAILURE in 3m 24s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d0d0e5cb26524e8596e1fbb623bc7c15 : FAILURE in 3m 01s