Build failed. https://zuul.opendev.org/t/openstack/buildset/b640667e6fbb4eb68b61c259990a8587 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4932a81fc6b5413aa37eafa082ed73e1 : SUCCESS in 5m 26s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/35cdf2c2a9e2455787ce0dd0d6143124 : SUCCESS in 5m 08s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3e5136bb212c4b318938a20c03057c90 : SUCCESS in 3m 48s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/554c9a71b38f4e328f2921c332e06d97 : FAILURE in 4m 38s