/usr/ is in ruby-uglifier 1.3.0-1.
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/uglifier.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/1.9.1/
/usr/share/rubygems-integration/1.9.1/specifications/
/usr/share/rubygems-integration/1.9.1/specifications/uglifier-1.3.0.gemspec
/usr/share/rubygems-integration/2.0/
/usr/share/rubygems-integration/2.0/specifications/
/usr/share/rubygems-integration/2.0/specifications/uglifier-1.3.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-uglifier/
/usr/share/doc/ruby-uglifier/README.md
/usr/share/doc/ruby-uglifier/changelog.Debian.gz
/usr/share/doc/ruby-uglifier/copyright
/usr/share/javascript/
/usr/share/javascript/ruby-uglifier/
/usr/share/javascript/ruby-uglifier/uglify.js
/usr/share/javascript/ruby-uglifier/es5.js