/usr/ is in ruby-multipart-parser 0.1.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/multipart-parser-0.1.1.gemspec
/usr/share/doc/
/usr/share/doc/ruby-multipart-parser/
/usr/share/doc/ruby-multipart-parser/changelog.Debian.gz
/usr/share/doc/ruby-multipart-parser/copyright
/usr/lib/
/usr/lib/ruby/vendor_ruby/multipart_parser/
/usr/lib/ruby/vendor_ruby/multipart_parser/reader.rb
/usr/lib/ruby/vendor_ruby/multipart_parser/parser.rb
/usr/lib/ruby/vendor_ruby/multipart_parser/version.rb