chk_luks_keyslots not included in default build
The chk_luks_keyslots tool is not included in the cryptsetup package unless individual distros modify the Makefile to include it. This forces possibly novice users who are already in serious trouble to build the program from source in order to further diagnose their problem with unlocking a LUKS container. Absent a good reason for omitting this tool, it should be getting installed by default.