/usr/ is in ruby-rails-assets-perfect-scrollbar 0.6.12+dfsg-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/rails-assets-perfect-scrollbar/
/usr/lib/ruby/vendor_ruby/rails-assets-perfect-scrollbar/version.rb
/usr/lib/ruby/vendor_ruby/rails-assets-perfect-scrollbar.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-rails-assets-perfect-scrollbar/
/usr/share/doc/ruby-rails-assets-perfect-scrollbar/README.md
/usr/share/doc/ruby-rails-assets-perfect-scrollbar/copyright
/usr/share/ruby-rails-assets-perfect-scrollbar/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/min/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/min/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/min/perfect-scrollbar.jquery.min.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/min/perfect-scrollbar.min.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/perfect-scrollbar.jquery.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar/perfect-scrollbar.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/stylesheets/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/stylesheets/perfect-scrollbar/
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/stylesheets/perfect-scrollbar/perfect-scrollbar.scss
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/stylesheets/perfect-scrollbar.scss
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/rails-assets-perfect-scrollbar-0.6.12.gemspec
/usr/share/doc/ruby-rails-assets-perfect-scrollbar/changelog.Debian.gz
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/min/perfect-scrollbar.jquery.min.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/min/perfect-scrollbar.min.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar.jquery.js
/usr/share/ruby-rails-assets-perfect-scrollbar/app/assets/javascripts/perfect-scrollbar.js