Build failed. https://zuul.opendev.org/t/openstack/buildset/84b6f1c2042b4a88a9e650912bda0ad3 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/34766a6990094472b9e2f92597e7aab4 : SUCCESS in 3m 34s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/39baf4efc5314138be3facd43479570a : RETRY_LIMIT in 3s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/26b9c9003a33438db408eced8aef57f8 : RETRY_LIMIT in 1s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/c3b6e077347d4be7b19e319ee1e4daa6 : SUCCESS in 3m 24s