Build failed. https://zuul.opendev.org/t/openstack/buildset/b0a40c038d7f40feb1f57a07ca49a23b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4a3b1c052f664ba6ae6e73304376f6fd : SUCCESS in 3m 18s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/c832cc5f73454d75bef688e629d446da : FAILURE in 2m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c50bc309462f43eab0d297336b32cee7 : SUCCESS in 2m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/fb23b90c39274721bd53de00b6fa07d2 : FAILURE in 4m 27s