Build failed. https://zuul.opendev.org/t/openstack/buildset/449a36df38ee4bf0bbba42fe2482b7bb - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/a1e05f6ea9034fcbaa6f426d2fe86f8d : SUCCESS in 3m 43s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/4eea9547aa3549bf99d032069a1b304c : FAILURE in 2m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/aaa2e9357845441f8684564cc6be47f5 : SUCCESS in 4m 41s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/8095b3f6a2294007b366968196840f50 : SUCCESS in 4m 29s