Using two type parameters was causing too much problem, as illustrated in the following. Falling back to one type argument version, which is much easier to handle:
------------------
import java.util.ArrayList;

class Job<J extends Job<J,R>, R extends Run<J,R>> {}
class Run<J extends Job<J,R>, R extends Run<J,R>> {}

class Job2 extends Job<Job2,Run2> {}
class Run2 extends Run<Job2,Run2> {}

class RunList<J extends Job<J,R>, R extends Run<J,R>> extends ArrayList<R> {}

class Foo {
    // how do I make this work?
    public void test1(RunList<Job,Run> why) {}

    // this works
    public void test2(RunList<Job2,Run2> why) {}
}

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@34043 71c3de6d-444a-0410-be80-ed276b4c234a