/usr/ is in ruby-http-cookie 1.0.2-1.
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/http-cookie.rb
/usr/lib/ruby/vendor_ruby/http/
/usr/lib/ruby/vendor_ruby/http/cookie.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/
/usr/lib/ruby/vendor_ruby/http/cookie_jar/abstract_store.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/mozilla_store.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/cookiestxt_saver.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/hash_store.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/abstract_saver.rb
/usr/lib/ruby/vendor_ruby/http/cookie_jar/yaml_saver.rb
/usr/lib/ruby/vendor_ruby/http/cookie/
/usr/lib/ruby/vendor_ruby/http/cookie/ruby_compat.rb
/usr/lib/ruby/vendor_ruby/http/cookie/scanner.rb
/usr/lib/ruby/vendor_ruby/http/cookie/version.rb
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/http-cookie-1.0.2.gemspec
/usr/share/doc/
/usr/share/doc/ruby-http-cookie/
/usr/share/doc/ruby-http-cookie/copyright
/usr/share/doc/ruby-http-cookie/README.md.gz
/usr/share/doc/ruby-http-cookie/changelog.Debian.gz