Build failed. https://zuul.opendev.org/t/openstack/buildset/9943b211d62c42859bae94bc011bb5dd - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ac9acd538d6244139433e93ae8a76fec : SUCCESS in 3m 36s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/43ad88a3949145979a0ee0a3da3b4d53 : SUCCESS in 2m 48s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/1349f068008944cba9f198bf8c617536 : FAILURE in 2m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/25b2017767604d7b849327d6f6124066 : FAILURE in 2m 38s