/usr/ is in ruby-diaspora-federation-rails 0.0.8-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/diaspora_federation/
/usr/lib/
/usr/lib/ruby/vendor_ruby/diaspora_federation/rails.rb
/usr/lib/ruby/vendor_ruby/diaspora_federation/engine.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/diaspora_federation-rails-0.0.8.gemspec
/usr/share/ruby-diaspora-federation-rails/
/usr/share/ruby-diaspora-federation-rails/app/
/usr/share/ruby-diaspora-federation-rails/app/controllers/
/usr/share/ruby-diaspora-federation-rails/app/controllers/diaspora_federation/
/usr/share/ruby-diaspora-federation-rails/app/controllers/diaspora_federation/h_card_controller.rb
/usr/share/ruby-diaspora-federation-rails/app/controllers/diaspora_federation/receive_controller.rb
/usr/share/ruby-diaspora-federation-rails/app/controllers/diaspora_federation/webfinger_controller.rb
/usr/share/ruby-diaspora-federation-rails/app/controllers/diaspora_federation/application_controller.rb
/usr/share/doc/
/usr/share/doc/ruby-diaspora-federation-rails/
/usr/share/doc/ruby-diaspora-federation-rails/copyright
/usr/share/doc/ruby-diaspora-federation-rails/changelog.Debian.gz
/usr/share/doc/ruby-diaspora-federation-rails/README.md