[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/902101f2a3d642c09ed208ce2f26eb... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/ddf3307dea214fbdbcaccdb4a84f91c6 : SUCCESS in 5m 16s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/d2c9598bfd704e4fb5c54718a3e6f42d : SUCCESS in 6m 15s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/c2d60dc7c62f4a0db41aa7ecb28e9fbd : SUCCESS in 5m 33s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/7d22e6f455944bd2a8320a0b77c30579 : FAILURE in 5m 24s