Build failed. https://zuul.opendev.org/t/openstack/buildset/9b7ba735051c4e0c9b76370a29f8464a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/747f8666f3ee41bc871e3dda62547b32 : SUCCESS in 3m 40s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/65941928306641e98d7a8760bfcba1e4 : RETRY_LIMIT in 4s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/4bb5a64857914fce88030f2098ece307 : RETRY_LIMIT in 2s