/usr/lib/ is in libfile-rsyncp-perl 0.70-1.1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.20/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/FileList/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/FileList/autosplit.ix
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/FileList/FileList.so
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/Digest/
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/Digest/autosplit.ix
/usr/lib/x86_64-linux-gnu/perl5/5.20/auto/File/RsyncP/Digest/Digest.so
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/RsyncP.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/RsyncP/
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/RsyncP/FileIO.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/RsyncP/Digest.pm
/usr/lib/x86_64-linux-gnu/perl5/5.20/File/RsyncP/FileList.pm