Build failed. https://zuul.opendev.org/t/openstack/buildset/8b2bab7009f948a4aead91a8a4c2bb48 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/af3c32b0b6bd4e559be34914b8aaa9c1 : SUCCESS in 6m 03s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4404cd02a6a44efaa34d025f86b3f29c : SUCCESS in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/dfa952006c1e43019b6d6c209213fe4a : SUCCESS in 4m 02s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6da8571992db4eb9af28f55fc61b4880 : FAILURE in 4m 42s