/usr/lib/ is in yapra 0.1.2-7.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/yapra.rb
/usr/lib/ruby/vendor_ruby/yapra/
/usr/lib/ruby/vendor_ruby/yapra/runtime.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin/
/usr/lib/ruby/vendor_ruby/yapra/plugin/erb_applier.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin/mechanize_base.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin/feed_item_operator.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin/context_aware.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin/base.rb
/usr/lib/ruby/vendor_ruby/yapra/pipeline.rb
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin/
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin/advance_mode_registry.rb
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin/registry_factory.rb
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin/compatible_mode_registry.rb
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin/base.rb
/usr/lib/ruby/vendor_ruby/yapra/plugin.rb
/usr/lib/ruby/vendor_ruby/yapra/legacy_plugin.rb
/usr/lib/ruby/vendor_ruby/yapra/version.rb
/usr/lib/ruby/vendor_ruby/yapra/config.rb
/usr/lib/ruby/vendor_ruby/yapra/inflector.rb