/usr/lib/ruby/1.8/wsdl/soap/ is in libruby1.8 1.8.7.352-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/1.8/wsdl/soap/address.rb
/usr/lib/ruby/1.8/wsdl/soap/binding.rb
/usr/lib/ruby/1.8/wsdl/soap/body.rb
/usr/lib/ruby/1.8/wsdl/soap/cgiStubCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/classDefCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/classDefCreatorSupport.rb
/usr/lib/ruby/1.8/wsdl/soap/clientSkeltonCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/complexType.rb
/usr/lib/ruby/1.8/wsdl/soap/data.rb
/usr/lib/ruby/1.8/wsdl/soap/definitions.rb
/usr/lib/ruby/1.8/wsdl/soap/driverCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/element.rb
/usr/lib/ruby/1.8/wsdl/soap/fault.rb
/usr/lib/ruby/1.8/wsdl/soap/header.rb
/usr/lib/ruby/1.8/wsdl/soap/headerfault.rb
/usr/lib/ruby/1.8/wsdl/soap/mappingRegistryCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/methodDefCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/operation.rb
/usr/lib/ruby/1.8/wsdl/soap/servantSkeltonCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/standaloneServerStubCreator.rb
/usr/lib/ruby/1.8/wsdl/soap/wsdl2ruby.rb