/usr/ is in ruby-albino 1.3.3-1.
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/albino.rb
/usr/lib/ruby/vendor_ruby/albino/
/usr/lib/ruby/vendor_ruby/albino/multi.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/1.8/
/usr/share/rubygems-integration/1.8/specifications/
/usr/share/rubygems-integration/1.8/specifications/albino-1.3.3.gemspec
/usr/share/rubygems-integration/1.9.1/
/usr/share/rubygems-integration/1.9.1/specifications/
/usr/share/rubygems-integration/1.9.1/specifications/albino-1.3.3.gemspec
/usr/share/doc/
/usr/share/doc/ruby-albino/
/usr/share/doc/ruby-albino/README.md
/usr/share/doc/ruby-albino/changelog.Debian.gz
/usr/share/doc/ruby-albino/copyright