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

Build failed. https://zuul.opendev.org/t/openstack/buildset/bf79f460eaa1440cb3a8e77662d077... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/5c4d3056d3714ea1b417fd124967212c : SUCCESS in 3m 33s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/b6fdddcc48ae4976aa386e482e086521 : SUCCESS in 4m 49s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/7ec7abd8605a41c5a3c024ac62d4f2a3 : SUCCESS in 4m 52s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7ffa0d8692b84610976a02e60743ec37 : FAILURE in 4m 24s