This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
First of all, the build only seems successful, but the wsdl2java command failed, as you noticed.
Have you tried to split options that require parameters, such as -d, according to the following example with two <arg> elements: