/usr/lib/ruby/vendor_ruby/ is in trocla 0.2.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/trocla/
/usr/lib/ruby/vendor_ruby/trocla/default_config.yaml
/usr/lib/ruby/vendor_ruby/trocla/stores.rb
/usr/lib/ruby/vendor_ruby/trocla/encryptions.rb
/usr/lib/ruby/vendor_ruby/trocla/formats.rb
/usr/lib/ruby/vendor_ruby/trocla/encryptions/
/usr/lib/ruby/vendor_ruby/trocla/encryptions/none.rb
/usr/lib/ruby/vendor_ruby/trocla/encryptions/ssl.rb
/usr/lib/ruby/vendor_ruby/trocla/store.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/
/usr/lib/ruby/vendor_ruby/trocla/formats/pgsql.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/sha256crypt.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/ssha.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/plain.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/mysql.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/md5crypt.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/sha1.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/x509.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/sha512crypt.rb
/usr/lib/ruby/vendor_ruby/trocla/formats/bcrypt.rb
/usr/lib/ruby/vendor_ruby/trocla/util.rb
/usr/lib/ruby/vendor_ruby/trocla/version.rb
/usr/lib/ruby/vendor_ruby/trocla/stores/
/usr/lib/ruby/vendor_ruby/trocla/stores/moneta.rb
/usr/lib/ruby/vendor_ruby/trocla/stores/memory.rb
/usr/lib/ruby/vendor_ruby/trocla.rb