/usr/ is in ruby-rails-assets-punycode 1.3.2-2.
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-punycode.rb
/usr/lib/ruby/vendor_ruby/rails-assets-punycode/
/usr/lib/ruby/vendor_ruby/rails-assets-punycode/version.rb
/usr/share/
/usr/share/ruby-rails-assets-punycode/
/usr/share/ruby-rails-assets-punycode/app/
/usr/share/ruby-rails-assets-punycode/app/assets/
/usr/share/ruby-rails-assets-punycode/app/assets/javascripts/
/usr/share/ruby-rails-assets-punycode/app/assets/javascripts/punycode/
/usr/share/ruby-rails-assets-punycode/app/assets/javascripts/punycode.js
/usr/share/doc/
/usr/share/doc/ruby-rails-assets-punycode/
/usr/share/doc/ruby-rails-assets-punycode/changelog.Debian.gz
/usr/share/doc/ruby-rails-assets-punycode/copyright
/usr/share/doc/ruby-rails-assets-punycode/README.md
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/rails-assets-punycode-1.3.2.gemspec
/usr/share/ruby-rails-assets-punycode/app/assets/javascripts/punycode/punycode.js