/usr/lib/ruby/ is in schleuder-cli 0.1.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/schleuder-cli/
/usr/lib/ruby/vendor_ruby/schleuder-cli.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/base.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/conf.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/helper.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/keys.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/lists.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/openssl_ssl_patch.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/subcommand_fix.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/subscriptions.rb
/usr/lib/ruby/vendor_ruby/schleuder-cli/version.rb