how about this?

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@1316 71c3de6d-444a-0410-be80-ed276b4c234a

remoting/src/main/java/hudson/remoting/Request.java

@@ -59,11 +59,15 @@ abstract class Request<RSP extends Serializable,EXC extends Throwable> extends C
 
         EXC exc = response.exception;
         if(exc !=null)
-            throw exc;
+            _throw(exc);
 
         return response.returnValue;
     }
 
+    private static <EX extends Throwable> void _throw(EX e) throws EX {
+        throw e;
+    }
+
     /**
      * Makes an invocation but immediately returns without waiting for the completion
      * (AKA aysnchronous invocation.)