/usr/ is in ruby-sprockets-es6 0.9.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/sprockets/
/usr/lib/ruby/vendor_ruby/sprockets/es6/
/usr/lib/
/usr/lib/ruby/vendor_ruby/sprockets/es6/version.rb
/usr/lib/ruby/vendor_ruby/sprockets/es6.rb
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-sprockets-es6/
/usr/share/doc/ruby-sprockets-es6/README.md
/usr/share/doc/ruby-sprockets-es6/changelog.Debian.gz
/usr/share/doc/ruby-sprockets-es6/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/sprockets-es6-0.9.2.gemspec