Build failed. https://zuul.opendev.org/t/openstack/buildset/1e7fd9baa0c24d9ea65bfdef12e33bbf - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/7cc3e9964c314a0daf642eacd520b615 : SUCCESS in 6m 01s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/92358afd2ffe44b086681dd22384de84 : SUCCESS in 2m 35s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/9a891d4f3f844d1e92c70ea6aa630f92 : SUCCESS in 2m 25s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/d17c08be0ff24c70a3e76411accf40fe : FAILURE in 2m 47s