Build failed. https://zuul.opendev.org/t/openstack/buildset/99b64ca28c744d6dbdc3c501d7501ebf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a8745ec195d642c9a459c3aa9355efd4 : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/cc3618956688427684dc2c4ccfc607b7 : FAILURE in 3m 04s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/5affb99a8609471f82171e1f1d41f22a : SUCCESS in 3m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/ab72e3d5e64b4f7a9b1460df9c9a0c65 : SUCCESS in 3m 32s