/usr/ is in ruby-websocket-parser 1.0.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/specifications/websocket_parser-1.0.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-websocket-parser/
/usr/share/doc/ruby-websocket-parser/copyright
/usr/share/doc/ruby-websocket-parser/changelog.Debian.gz
/usr/lib/
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/websocket_parser.rb
/usr/lib/ruby/vendor_ruby/websocket/
/usr/lib/ruby/vendor_ruby/websocket/server_handshake.rb
/usr/lib/ruby/vendor_ruby/websocket/message.rb
/usr/lib/ruby/vendor_ruby/websocket/client_handshake.rb
/usr/lib/ruby/vendor_ruby/websocket/parser.rb
/usr/lib/ruby/vendor_ruby/websocket/version.rb