/usr/lib/ is in libmemcached-libmemcached-perl 1.001801+dfsg-2+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/perl5/5.24/
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/API.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/const_hash.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/constants.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/func_hash.pl
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_analyze.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_auto.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_behavior.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_callback.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_create.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_delete.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_dump.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_flush.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_flush_buffers.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_generate_hash_value.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_get.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_memory_allocators.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_pool.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_quit.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_result_st.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_sasl.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_server_st.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_servers.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_set.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_stats.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_strerror.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_user_data.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_verbosity.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached/memcached_version.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/Memcached/libmemcached.pm
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/Memcached/
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/Memcached/libmemcached/
/usr/lib/x86_64-linux-gnu/perl5/5.24/auto/Memcached/libmemcached/libmemcached.so