/usr/share/perl5/KiokuDB/Backend/Role/ is in libkiokudb-perl 0.57-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/KiokuDB/Backend/Role/BinarySafe.pm
/usr/share/perl5/KiokuDB/Backend/Role/Broken.pm
/usr/share/perl5/KiokuDB/Backend/Role/Clear.pm
/usr/share/perl5/KiokuDB/Backend/Role/Concurrency/
/usr/share/perl5/KiokuDB/Backend/Role/Concurrency/POSIX.pm
/usr/share/perl5/KiokuDB/Backend/Role/GC.pm
/usr/share/perl5/KiokuDB/Backend/Role/Prefetch.pm
/usr/share/perl5/KiokuDB/Backend/Role/Query/
/usr/share/perl5/KiokuDB/Backend/Role/Query.pm
/usr/share/perl5/KiokuDB/Backend/Role/Query/GIN.pm
/usr/share/perl5/KiokuDB/Backend/Role/Query/Simple/
/usr/share/perl5/KiokuDB/Backend/Role/Query/Simple.pm
/usr/share/perl5/KiokuDB/Backend/Role/Query/Simple/Linear.pm
/usr/share/perl5/KiokuDB/Backend/Role/Scan.pm
/usr/share/perl5/KiokuDB/Backend/Role/TXN/
/usr/share/perl5/KiokuDB/Backend/Role/TXN.pm
/usr/share/perl5/KiokuDB/Backend/Role/TXN/Memory/
/usr/share/perl5/KiokuDB/Backend/Role/TXN/Memory.pm
/usr/share/perl5/KiokuDB/Backend/Role/TXN/Memory/Scan.pm
/usr/share/perl5/KiokuDB/Backend/Role/TXN/Nested.pm
/usr/share/perl5/KiokuDB/Backend/Role/UnicodeSafe.pm