[Openstack-stable-maint] Stable check of openstack/cinder for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/d63987c832524079aa014b0a40f97f... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/8c358f3db2394cb8a826a22e4fce2d6f : SUCCESS in 12m 54s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/df59c7b393094ffdbff139e00461b5eb : FAILURE in 3m 31s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7e185e1d3f784cf9ad22398c394ac61d : SUCCESS in 10m 35s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/99a922045c984d8e93b133915d37c02b : SUCCESS in 8m 59s