The IoT compose from yesterday allegedly finished but the rpm-ostree part failed so the whole compose should have (and used to) failed.
https://kojipkgs.fedoraproject.org/compose/iot/Fedora-IoT-33-20200810.0/
https://koji.fedoraproject.org/koji/taskinfo?taskID=49051784
The configuration specifies failable: ["*"] for all architectures in ostree section. That turns on this behavior. Remove the lines from the configuration and the compose will fail as a whole if the task fails.
failable: ["*"]
ostree
Metadata Update from @lsedlar: - Issue close_status updated to: Invalid - Issue status updated to: Closed (was: Open)
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/pungi/pungi/issues/1432
Please continue any further discussion there.