Build failed. https://zuul.opendev.org/t/openstack/buildset/7f2e30ca9dcf4deba5ad8202a90ad07b - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/9d46429435824b9ba04982b8c5a32311 : FAILURE in 6m 23s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/af38b6e22fe043c48eac89d37447b86b : SUCCESS in 9m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2b38c75d22654691b2d5f2a5d1f5f9e0 : SUCCESS in 7m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/36d7b415b93f448ba6d5101d68c86b57 : SUCCESS in 7m 15s