/usr/lib/ruby/ is in roodi 5.0.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/roodi/
/usr/lib/ruby/vendor_ruby/roodi/core/
/usr/lib/ruby/vendor_ruby/roodi/core/runner.rb
/usr/lib/ruby/vendor_ruby/roodi/core/parser.rb
/usr/lib/ruby/vendor_ruby/roodi/core/error.rb
/usr/lib/ruby/vendor_ruby/roodi/core/sexp.rb
/usr/lib/ruby/vendor_ruby/roodi/core/checking_visitor.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/
/usr/lib/ruby/vendor_ruby/roodi/checks/for_loop_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/class_line_count_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/cyclomatic_complexity_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/empty_rescue_body_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/cyclomatic_complexity_method_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/assignment_in_conditional_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/cyclomatic_complexity_block_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/class_name_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/method_name_check.rb
/usr/lib/ruby/vendor_ruby/roodi/core.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/abc_metric_method_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/npath_complexity_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/line_count_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/method_line_count_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/npath_complexity_method_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/core_method_override_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/case_missing_else_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/control_coupling_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/name_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/module_line_count_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/module_name_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/class_variable_check.rb
/usr/lib/ruby/vendor_ruby/roodi/checks/parameter_number_check.rb
/usr/lib/ruby/vendor_ruby/roodi/version.rb
/usr/lib/ruby/vendor_ruby/roodi/checks.rb
/usr/lib/ruby/vendor_ruby/roodi_task.rb
/usr/lib/ruby/vendor_ruby/roodi.rb