Build failed. https://zuul.opendev.org/t/openstack/buildset/4e77bbf2887a4c9282292879f0e72a14 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/91f2fd8f30174930b40c55327b936427 : SUCCESS in 3m 22s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7d4eec6f2091420faf5b2f2119ae50dc : SUCCESS in 3m 12s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/578daa0fcf78497bbb627e3594e5d7f0 : RETRY_LIMIT in 2s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c0ea495e3bee4e3fb29e990216f5257e : RETRY_LIMIT in 3s