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

Build failed. https://zuul.opendev.org/t/openstack/buildset/a1d326a64867436597f1abd5a1ac56... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/025ed2fb1e2742ca8ee52a00660c3245 : SUCCESS in 3m 21s - openstack-tox-py38 https://zuul.opendev.org/t/openstack/build/ade79c8620be40a6a20c2b22991911f8 : POST_FAILURE in 16m 24s - openstack-tox-py39 https://zuul.opendev.org/t/openstack/build/21772f84b0ab49699d9105fc9d0bbf1a : SUCCESS in 3m 29s