Build failed. https://zuul.opendev.org/t/openstack/buildset/eda6a258f05f47ba93aa251b0707e70d - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e97f80daeef44687a867d388141cb4d3 : SUCCESS in 2m 52s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/0dc6087f8e3e45649a6bae7a74abfb8c : SUCCESS in 3m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/52264e6e58de4af7989ea125d19e94bb : FAILURE in 3m 12s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/78cde7412af34fe39735b2ae9eb3fb60 : FAILURE in 2m 46s