Build failed. https://zuul.opendev.org/t/openstack/buildset/961e0c7e740a4fe9ab3c0b4adc5f58b2 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/fac38d677f914361bf950ae294fa249c : SUCCESS in 9m 05s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7701d0f5e4944b15a9537921ce83d97f : SUCCESS in 9m 06s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/48477e5ee0a94744811e5f1921f0ad7e : FAILURE in 6m 21s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/9d78f0775e0241f5895b67d5badad28e : SUCCESS in 12m 12s