/usr/lib/ is in ruby-toml-rb 1.0.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/
/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/toml-rb/
/usr/lib/ruby/vendor_ruby/toml-rb/array.rb
/usr/lib/ruby/vendor_ruby/toml-rb/dumper.rb
/usr/lib/ruby/vendor_ruby/toml-rb/errors.rb
/usr/lib/ruby/vendor_ruby/toml-rb/grammars/
/usr/lib/ruby/vendor_ruby/toml-rb/grammars/array.citrus
/usr/lib/ruby/vendor_ruby/toml-rb/grammars/document.citrus
/usr/lib/ruby/vendor_ruby/toml-rb/grammars/helper.citrus
/usr/lib/ruby/vendor_ruby/toml-rb/grammars/primitive.citrus
/usr/lib/ruby/vendor_ruby/toml-rb/inline_table.rb
/usr/lib/ruby/vendor_ruby/toml-rb/keygroup.rb
/usr/lib/ruby/vendor_ruby/toml-rb/keyvalue.rb
/usr/lib/ruby/vendor_ruby/toml-rb/parser.rb
/usr/lib/ruby/vendor_ruby/toml-rb/string.rb
/usr/lib/ruby/vendor_ruby/toml-rb/table_array.rb
/usr/lib/ruby/vendor_ruby/toml-rb.rb