Build failed. https://zuul.opendev.org/t/openstack/buildset/ad73c6e8f5fa4216886fa6dff882e26f - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/4a86dc128a974a6786fae068aa278b02 : SUCCESS in 2m 51s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/56883d2dc41e4a7aac87792f6b3127b8 : RETRY_LIMIT in 3m 02s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/279a5672dc0f46c3bcc5bce756866109 : SUCCESS in 2m 44s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/b43c02c32aef4e47a08c47e695d6c436 : SUCCESS in 3m 43s