Build failed. https://zuul.opendev.org/t/openstack/buildset/8ec868f027d845b6ab9f6b3b09ac8bf0 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/2b4167dee51f4f139240fa397948ee88 : SUCCESS in 3m 50s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0f1aaaf1aa5d4c88ba0ab2ec6fa1fae8 : SUCCESS in 4m 44s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/f4922714c199486990cd6440224318bf : SUCCESS in 4m 34s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/f75b49cd91c54537852975c779835856 : FAILURE in 7m 32s