/usr/ is in ruby-grape-route-helpers 2.1.0-2.
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/grape/
/usr/lib/ruby/vendor_ruby/grape/route_helpers.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/
/usr/lib/ruby/vendor_ruby/grape-route-helpers/all_routes.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/decorated_route.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/named_route_matcher.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/railtie.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/route_displayer.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/tasks.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers/version.rb
/usr/lib/ruby/vendor_ruby/grape-route-helpers.rb
/usr/lib/ruby/vendor_ruby/tasks/
/usr/lib/ruby/vendor_ruby/tasks/grape_route_helpers.rake
/usr/share/
/usr/share/doc/
/usr/share/doc/ruby-grape-route-helpers/
/usr/share/doc/ruby-grape-route-helpers/README.md
/usr/share/doc/ruby-grape-route-helpers/changelog.Debian.gz
/usr/share/doc/ruby-grape-route-helpers/copyright
/usr/share/rubygems-integration/
/usr/share/rubygems-integration/all/
/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/grape-route-helpers-2.1.0.gemspec