Build failed. https://zuul.opendev.org/t/openstack/buildset/b70b4d065de546ab9d6419be18636ca5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/3e1ff1618a1c4f4bb1953fbe6d3ea600 : SUCCESS in 3m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/7d97796ccf3243dbb8124ff6bbd32fe5 : RETRY_LIMIT in 2m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/b964e45133414b58bf16f5ec62fbca3e : SUCCESS in 3m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/56ad5f65d7574e49b2e2b31cf6503cd1 : SUCCESS in 4m 14s