/usr/ is in ruby-rash 0.4.0-1.
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/rash/
/usr/lib/ruby/vendor_ruby/rash/version.rb
/usr/lib/ruby/vendor_ruby/hashie/
/usr/lib/ruby/vendor_ruby/hashie/rash.rb
/usr/lib/ruby/vendor_ruby/rash.rb
/usr/share/
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/ruby-rash
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/1.8/
/usr/share/rubygems-integration/1.8/specifications/
/usr/share/rubygems-integration/1.8/specifications/rash-0.4.0.gemspec
/usr/share/rubygems-integration/1.9.1/
/usr/share/rubygems-integration/1.9.1/specifications/
/usr/share/rubygems-integration/1.9.1/specifications/rash-0.4.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-rash/
/usr/share/doc/ruby-rash/copyright
/usr/share/doc/ruby-rash/changelog.Debian.gz