/usr/lib/ruby/ is in ruby-fast-gettext 0.7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/fast_gettext.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/
/usr/lib/ruby/vendor_ruby/fast_gettext/translation.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/mo_file.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/iconv.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/poparser.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/empty.mo
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/string.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/mofile.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/vendor/README.rdoc
/usr/lib/ruby/vendor_ruby/fast_gettext/po_file.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/version.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/storage.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/yaml.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/logger.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/po.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/base.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/chain.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/mo.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/db.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/db_models/
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/db_models/translation_text.rb
/usr/lib/ruby/vendor_ruby/fast_gettext/translation_repository/db_models/translation_key.rb