Build failed. https://zuul.opendev.org/t/openstack/buildset/0da9b0026eb34ef1bc1a1354953d7b8c - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/e54fc3d2b0074ae6b7d84f257aa97ba6 : SUCCESS in 3m 30s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/f05b2d6401474e33a1384c58b7e39f03 : RETRY_LIMIT in 3m 07s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/848fc66d06bf433fbc678d2273a7afb0 : SUCCESS in 3m 00s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/440b838421ad4317be561aa57d7f4f5c : SUCCESS in 4m 14s