/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/ is in ruby-activesupport-3.2 3.2.16-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/acts_like.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/blank.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/conversions.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/duplicable.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/inclusion.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/instance_variables.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/to_json.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/to_param.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/to_query.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/try.rb
/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/with_options.rb