Build failed. https://zuul.opendev.org/t/openstack/buildset/0669472ab4414f248bfba38045e9f589 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/f2e351efd5394b2b81e4c361610d9d65 : SUCCESS in 4m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7476fcd726d542de90c1e244008cfcaa : SUCCESS in 6m 41s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/efa131b8722d4d9ca059feb9ea4e9c8e : SUCCESS in 4m 18s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/976046794900447e888a188607b28de2 : FAILURE in 4m 16s