/usr/lib/ruby/vendor_ruby/ is in ruby-haml-rails 0.5.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/generators/
/usr/lib/ruby/vendor_ruby/generators/haml/
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/
/usr/lib/ruby/vendor_ruby/haml-rails/
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/scaffold_generator.rb
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/edit.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/new.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/index.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/_form.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/scaffold/templates/show.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/mailer/
/usr/lib/ruby/vendor_ruby/generators/haml/mailer/mailer_generator.rb
/usr/lib/ruby/vendor_ruby/generators/haml/mailer/templates/
/usr/lib/ruby/vendor_ruby/generators/haml/mailer/templates/view.text.haml
/usr/lib/ruby/vendor_ruby/generators/haml/controller/
/usr/lib/ruby/vendor_ruby/generators/haml/controller/templates/
/usr/lib/ruby/vendor_ruby/generators/haml/controller/templates/view.html.haml
/usr/lib/ruby/vendor_ruby/generators/haml/controller/controller_generator.rb
/usr/lib/ruby/vendor_ruby/haml-rails.rb
/usr/lib/ruby/vendor_ruby/haml-rails/version.rb