Build failed. https://zuul.opendev.org/t/openstack/buildset/248f4a552cd74f14b212aec44ea8a1e7 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2c76278484104d9d8f722f6aa8c36c50 : SUCCESS in 3m 04s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/acac916b4a364bb3aff1e3423fecc774 : SUCCESS in 3m 18s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f81167f9a9754c488a424e353c0d4f7b : FAILURE in 3m 06s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/dcf98b1cdc614914a81b66dcb312c419 : FAILURE in 2m 29s