/usr/ is in ruby-remcached 0.4.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/remcached/
/usr/lib/ruby/vendor_ruby/remcached/packet.rb
/usr/lib/ruby/vendor_ruby/remcached/const.rb
/usr/lib/ruby/vendor_ruby/remcached/pack_array.rb
/usr/lib/ruby/vendor_ruby/remcached/client.rb
/usr/lib/ruby/vendor_ruby/remcached.rb
/usr/share/
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/ruby-remcached
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/remcached-0.4.1.gemspec
/usr/share/doc/
/usr/share/doc/ruby-remcached/
/usr/share/doc/ruby-remcached/examples/
/usr/share/doc/ruby-remcached/examples/fill.rb
/usr/share/doc/ruby-remcached/copyright
/usr/share/doc/ruby-remcached/changelog.Debian.gz
/usr/share/doc/ruby-remcached/README.rst