Whilst I am not an expert on this transition or the abi-compliance-checker, a quick look at the logs[1] suggests this is a tool configuration issue and src:consolekit2 may not require t64 migration.
Can you clarify? Thanks Mark [1] https://adrien.dcln.fr/misc/armhf-time_t/2024-02-03T09:18:00/logs/libconsolekit-dev/time_t/log.txt