/usr/lib/x86_64-linux-gnu/ is in libdate-simple-perl 3.0300-1build4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.26/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple/D8.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple/Fmt.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple/ISO.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple/NoXS.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Date/Simple.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Date/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Date/Simple/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Date/Simple/Simple.so