Build failed. https://zuul.opendev.org/t/openstack/buildset/5ff9f9bca15b49d6af9baf47c47be791 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ce6bf322c6de4e8a86413a9752675ca7 : SUCCESS in 4m 47s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/ccd44dd21d734408b144e0f925cc9186 : FAILURE in 3m 22s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/fcce3c82fd28456597d24301b45223ea : SUCCESS in 3m 20s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9cace9ae88ba4b8899b79d6edb957edf : SUCCESS in 3m 39s