/usr/lib/ruby/vendor_ruby/action_dispatch/journey/ is in ruby-actionpack 2:4.2.6-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/backwards.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/formatter.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/gtg/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/gtg/builder.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/gtg/simulator.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/gtg/transition_table.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nfa/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nfa/builder.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nfa/dot.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nfa/simulator.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nfa/transition_table.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nodes/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/nodes/node.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/parser.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/parser.y
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/parser_extras.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/path/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/path/pattern.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/route.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/router/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/router.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/router/strexp.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/router/utils.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/routes.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/scanner.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/visitors.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/visualizer/
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/visualizer/fsm.css
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/visualizer/fsm.js
/usr/lib/ruby/vendor_ruby/action_dispatch/journey/visualizer/index.html.erb