Compilation warning when using @AutoClone on an object with collection properties

I'm getting a compilation error/warning when I try to compile a class using the @AutoClone annotation (with a "copy constructor" style) which contains list/collection values. I am using Groovy 2.2.2, and building my code using IntelliJ Ultimate 12.1.3.

Attached is a simple test class I put together which produces the error when compiled. The error message I get in my IDE is as follows:

Groovyc: A transform used a generics containing ClassNode com.Test for the constructor protected void <init>(com.Test other)

directly. You are not supposed to do this. Please create a new ClassNode referring to the old ClassNode and use the new ClassNode instead of the old one. Otherwise the compiler will create wrong descriptors and a potential NullPointerException in TypeResolver in the OpenJDK. If this is not your own doing, please report this bug to the writer of the transform.