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

Build failed. https://zuul.opendev.org/t/openstack/buildset/665a1a2e299845158c2b32d9265755... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/0e986938fa4e4bc294a510a3ec1c1096 : TIMED_OUT in 30m 56s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3749a159b2984abfb7435b7b779aad95 : SUCCESS in 3m 23s - openstack-tox-py38 https://zuul.opendev.org/t/openstack/build/4270356a99e1486685a1d9c317667b4b : TIMED_OUT in 40m 48s