Build failed. https://zuul.opendev.org/t/openstack/buildset/712bb66d8005459885bda964e2d7baba - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/c721aaaa5a7748b884577112a2a0a4e9 : SUCCESS in 6m 17s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/a92efa115dff4505b9cbb98c68498440 : FAILURE in 2m 45s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/41f76a9ea38546fe85d410087a3100dd : SUCCESS in 3m 14s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/5da8cb7739b8460f9b933222b7416178 : SUCCESS in 4m 29s