/usr/lib/ruby/ is in ruby-rspec-support 3.4.0c3e0m1s1-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/rspec/
/usr/lib/ruby/vendor_ruby/rspec/support/
/usr/lib/ruby/vendor_ruby/rspec/support/differ.rb
/usr/lib/ruby/vendor_ruby/rspec/support/recursive_const_methods.rb
/usr/lib/ruby/vendor_ruby/rspec/support/encoded_string.rb
/usr/lib/ruby/vendor_ruby/rspec/support/mutex.rb
/usr/lib/ruby/vendor_ruby/rspec/support/warnings.rb
/usr/lib/ruby/vendor_ruby/rspec/support/ruby_features.rb
/usr/lib/ruby/vendor_ruby/rspec/support/method_signature_verifier.rb
/usr/lib/ruby/vendor_ruby/rspec/support/hunk_generator.rb
/usr/lib/ruby/vendor_ruby/rspec/support/version_checker.rb
/usr/lib/ruby/vendor_ruby/rspec/support/matcher_definition.rb
/usr/lib/ruby/vendor_ruby/rspec/support/comparable_version.rb
/usr/lib/ruby/vendor_ruby/rspec/support/fuzzy_matcher.rb
/usr/lib/ruby/vendor_ruby/rspec/support/object_formatter.rb
/usr/lib/ruby/vendor_ruby/rspec/support/reentrant_mutex.rb
/usr/lib/ruby/vendor_ruby/rspec/support/directory_maker.rb
/usr/lib/ruby/vendor_ruby/rspec/support/caller_filter.rb
/usr/lib/ruby/vendor_ruby/rspec/support/version.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/
/usr/lib/ruby/vendor_ruby/rspec/support/spec/deprecation_helpers.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/library_wide_checks.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/string_matcher.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/in_sub_process.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/formatting_support.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/stderr_splitter.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/shell_out.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/with_isolated_stderr.rb
/usr/lib/ruby/vendor_ruby/rspec/support/spec/with_isolated_directory.rb
/usr/lib/ruby/vendor_ruby/rspec/support.rb