/usr/ is in ruby-execjs 2.6.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-execjs/
/usr/share/doc/ruby-execjs/changelog.Debian.gz
/usr/share/doc/ruby-execjs/copyright
/usr/share/doc/ruby-execjs/README.md
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/execjs-2.6.0.gemspec
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/execjs.rb
/usr/lib/ruby/vendor_ruby/execjs/
/usr/lib/ruby/vendor_ruby/execjs/disabled_runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/duktape_runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/encoding.rb
/usr/lib/ruby/vendor_ruby/execjs/external_runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/module.rb
/usr/lib/ruby/vendor_ruby/execjs/ruby_racer_runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/ruby_rhino_runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/runtime.rb
/usr/lib/ruby/vendor_ruby/execjs/runtimes.rb
/usr/lib/ruby/vendor_ruby/execjs/support/
/usr/lib/ruby/vendor_ruby/execjs/support/jsc_runner.js
/usr/lib/ruby/vendor_ruby/execjs/support/jscript_runner.js
/usr/lib/ruby/vendor_ruby/execjs/support/json2.js
/usr/lib/ruby/vendor_ruby/execjs/support/node_runner.js
/usr/lib/ruby/vendor_ruby/execjs/support/spidermonkey_runner.js
/usr/lib/ruby/vendor_ruby/execjs/version.rb