Build failed. https://zuul.opendev.org/t/openstack/buildset/a9e1c58c19204bd2bd6eb50dc7e7bd19 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a1ef068f6ef54f0899b35c3cdb3ac0af : SUCCESS in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/9b1b086b8ec64379a61f3c86a836fdfb : FAILURE in 4m 21s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7c25108ea71f4268997df710f04f19a9 : SUCCESS in 3m 16s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/31a6648709a54e41b89c57278146a0c1 : SUCCESS in 3m 33s