Build failed. https://zuul.opendev.org/t/openstack/buildset/62237f0636814a9e90f6d2d5436096f9 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4cc069be62c2477b9fdba5da0114d747 : SUCCESS in 3m 59s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/fbfae13f6c314b8fbede8c2bd2dbc409 : SUCCESS in 4m 53s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3ad5e575cb1e44aa80a302553e4f3aa7 : FAILURE in 4m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7825f8a2535e4bab93ed71b2bb3b011c : FAILURE in 3m 33s