/usr/share/perl5/ is in libcache-ref-perl 0.04-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Cache/Ref/CAR/
/usr/share/perl5/Cache/
/usr/share/perl5/Cache/Ref/
/usr/share/perl5/Cache/Ref/GCLOCK.pm
/usr/share/perl5/Cache/Ref/LIFO.pm
/usr/share/perl5/Cache/Ref/Role/
/usr/share/perl5/Cache/Ref/Role/API.pm
/usr/share/perl5/Cache/Ref/Role/WithDoublyLinkedList.pm
/usr/share/perl5/Cache/Ref/Role/Index.pm
/usr/share/perl5/Cache/Ref/Null.pm
/usr/share/perl5/Cache/Ref/CAR.pm
/usr/share/perl5/Cache/Ref/CAR/Base.pm
/usr/share/perl5/Cache/Ref/CART.pm
/usr/share/perl5/Cache/Ref/LRU.pm
/usr/share/perl5/Cache/Ref/Util/
/usr/share/perl5/Cache/Ref/Util/LRU/
/usr/share/perl5/Cache/Ref/Util/LRU/List.pm
/usr/share/perl5/Cache/Ref/Util/LRU/Array.pm
/usr/share/perl5/Cache/Ref/Util/LRU/API.pm
/usr/share/perl5/Cache/Ref/CLOCK/
/usr/share/perl5/Cache/Ref/CLOCK/Base.pm
/usr/share/perl5/Cache/Ref/Random.pm
/usr/share/perl5/Cache/Ref/FIFO.pm
/usr/share/perl5/Cache/Ref/CLOCK.pm
/usr/share/perl5/Cache/Ref.pm