Build failed. https://zuul.opendev.org/t/openstack/buildset/cd33e5e0e10841cfa5a8d8835238e4b3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4d6d83cdc8b64ef3bf2a504a179c7b2f : SUCCESS in 3m 07s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/05d86505fa4f446bb42288c55f01db0c : SUCCESS in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/a41ea72762d04387b5c6542c984e3890 : FAILURE in 2m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/3e56ef21e0a24f9ca60a7f8a4372c4b0 : FAILURE in 3m 04s