/usr/lib/x86_64-linux-gnu/perl5/ is in libtokyocabinet-perl 1.34-2+b3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.24/
/usr/lib/x86_64-linux-gnu/perl5/5.24/TokyoCabinet.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/TokyoCabinet.pod
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/TokyoCabinet/
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/TokyoCabinet/TokyoCabinet.so
/usr/lib/x86_64-linux-gnu/perl5/5.24/memsize.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/tcatest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/tcbtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/tcftest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/tchtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/tcttest.pl