/usr/lib/x86_64-linux-gnu/perl5/ is in libtokyocabinet-perl 1.34-2build2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.22/
/usr/lib/x86_64-linux-gnu/perl5/5.22/TokyoCabinet.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/TokyoCabinet.pod
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/TokyoCabinet/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/TokyoCabinet/TokyoCabinet.so
/usr/lib/x86_64-linux-gnu/perl5/5.22/memsize.pl
/usr/lib/x86_64-linux-gnu/perl5/5.22/tcatest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.22/tcbtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.22/tcftest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.22/tchtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.22/tcttest.pl