/usr/lib/x86_64-linux-gnu/perl5/ is in libtokyocabinet-perl 1.34-2build4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/5.26/
/usr/lib/x86_64-linux-gnu/perl5/5.26/TokyoCabinet.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/TokyoCabinet.pod
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/TokyoCabinet/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/TokyoCabinet/TokyoCabinet.so
/usr/lib/x86_64-linux-gnu/perl5/5.26/memsize.pl
/usr/lib/x86_64-linux-gnu/perl5/5.26/tcatest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.26/tcbtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.26/tcftest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.26/tchtest.pl
/usr/lib/x86_64-linux-gnu/perl5/5.26/tcttest.pl