Build failed. https://zuul.opendev.org/t/openstack/buildset/7837a4f5af0140759a9acb1e541a0b78 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/d3342c906b24409b87e1dee92ca9f208 : SUCCESS in 4m 27s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5251f90a240d4e4ba8003c9ddb56f3b3 : RETRY_LIMIT in 2m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/659a05868c884aef889aeba0cb1e0249 : SUCCESS in 4m 49s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2c06062ef2db44f69ec876884fcc8556 : SUCCESS in 5m 29s