/usr/ is in ruby-jbuilder 2.1.3-1.
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/jbuilder.rb
/usr/lib/ruby/vendor_ruby/generators/
/usr/lib/ruby/vendor_ruby/generators/rails/
/usr/lib/ruby/vendor_ruby/generators/rails/scaffold_controller_generator.rb
/usr/lib/ruby/vendor_ruby/generators/rails/templates/
/usr/lib/ruby/vendor_ruby/generators/rails/templates/index.json.jbuilder
/usr/lib/ruby/vendor_ruby/generators/rails/templates/show.json.jbuilder
/usr/lib/ruby/vendor_ruby/generators/rails/templates/controller.rb
/usr/lib/ruby/vendor_ruby/generators/rails/jbuilder_generator.rb
/usr/lib/ruby/vendor_ruby/jbuilder/
/usr/lib/ruby/vendor_ruby/jbuilder/jbuilder.rb
/usr/lib/ruby/vendor_ruby/jbuilder/dependency_tracker.rb
/usr/lib/ruby/vendor_ruby/jbuilder/railtie.rb
/usr/lib/ruby/vendor_ruby/jbuilder/errors.rb
/usr/lib/ruby/vendor_ruby/jbuilder/key_formatter.rb
/usr/lib/ruby/vendor_ruby/jbuilder/jbuilder_template.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-jbuilder/
/usr/share/doc/ruby-jbuilder/changelog.gz
/usr/share/doc/ruby-jbuilder/copyright
/usr/share/doc/ruby-jbuilder/README.md.gz
/usr/share/doc/ruby-jbuilder/changelog.Debian.gz
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/jbuilder-2.1.3.gemspec