/usr/ is in ruby-wirble 0.1.3-4.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/wirble.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/1.9.1/
/usr/share/rubygems-integration/1.9.1/specifications/
/usr/lib/
/usr/lib/ruby/
/usr/share/rubygems-integration/1.9.1/specifications/wirble-0.1.3.gemspec
/usr/share/rubygems-integration/1.8/
/usr/share/rubygems-integration/1.8/specifications/
/usr/share/rubygems-integration/1.8/specifications/wirble-0.1.3.gemspec
/usr/share/doc/
/usr/share/doc/ruby-wirble/
/usr/share/doc/ruby-wirble/README.gz
/usr/share/doc/ruby-wirble/changelog.Debian.gz
/usr/share/doc/ruby-wirble/copyright