Build failed. https://zuul.opendev.org/t/openstack/buildset/40e7cda3e20141c6884d82e9d2e677cf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/02139597a9324623ab0ecdcebb79a0cb : SUCCESS in 6m 10s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/bcb41ce37be646b699a0beaaa2c73f12 : SUCCESS in 5m 57s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/bf2da26823c34bc9a498f476b2028b00 : SUCCESS in 5m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/66d22b75d6a7431da6d34e52ee190017 : FAILURE in 4m 23s