public interface Foo<T extends Serializable> { } // will fail
public class FooBean implements Foo { }
public interface Bar<T> { } // will work
public class BarBean implements Bar { }
@Singleton
@Startup
public class TestSingleton {
    @Inject
    private Instance<Foo> foo;
    @Inject
    private Instance<Bar> bar;
    @PostConstruct
    public void init() {
        System.out.println("##### foo is unsatisfied = " + foo.isUnsatisfied());
        for (Foo f : foo)
            System.out.println("foo is: " + f.getClass().getCanonicalName());
        System.out.println("##### bar is unsatisfied = " + bar.isUnsatisfied());
        for (Bar b : bar)
            System.out.println("bar is: " + b.getClass().getCanonicalName());
    }
}

==================================
WORKS in Weld 1.x and 2.0.0.Alpha2: (this is the expected output)
==================================

16 [org.example.weldtest.App.main()] INFO org.jboss.weld.Version - WELD-000900 2.0.0 (Alpha2)
50 [org.example.weldtest.App.main()] INFO org.jboss.weld.Bootstrap - WELD-000101 Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
236 [org.example.weldtest.App.main()] WARN org.jboss.weld.interceptor.util.InterceptionTypeRegistry - Class 'javax.ejb.PostActivate' not found, interception based on it is not enabled
236 [org.example.weldtest.App.main()] WARN org.jboss.weld.interceptor.util.InterceptionTypeRegistry - Class 'javax.ejb.PrePassivate' not found, interception based on it is not enabled
##### foo is unsatisfied = false
foo is: org.example.weldtest.FooBean
##### bar is unsatisfied = false
bar is: org.example.weldtest.BarBean

==============================
BROKEN ON: 2.0.0.Alpha3 and up:
===============================

14 [org.example.weldtest.App.main()] INFO org.jboss.weld.Version - WELD-000900 2.0.0 (Alpha3)
46 [org.example.weldtest.App.main()] INFO org.jboss.weld.Bootstrap - WELD-000101 Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
276 [org.example.weldtest.App.main()] WARN org.jboss.weld.interceptor.util.InterceptionTypeRegistry - Class 'javax.ejb.PostActivate' not found, interception based on it is not enabled
276 [org.example.weldtest.App.main()] WARN org.jboss.weld.interceptor.util.InterceptionTypeRegistry - Class 'javax.ejb.PrePassivate' not found, interception based on it is not enabled
##### foo is unsatisfied = true
##### bar is unsatisfied = false
bar is: org.example.weldtest.BarBean

----

Aug 26, 2014 12:06:15 PM org.jboss.weld.bootstrap.WeldStartup <clinit>
INFO: WELD-000900: 2.2.4 (Final)
Aug 26, 2014 12:06:15 PM org.jboss.weld.bootstrap.WeldStartup startContainer
INFO: WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
Aug 26, 2014 12:06:15 PM org.jboss.weld.interceptor.util.InterceptionTypeRegistry <clinit>
WARN: WELD-001700: Interceptor annotation class javax.ejb.PostActivate not found, interception based on it is not enabled
Aug 26, 2014 12:06:15 PM org.jboss.weld.interceptor.util.InterceptionTypeRegistry <clinit>
WARN: WELD-001700: Interceptor annotation class javax.ejb.PrePassivate not found, interception based on it is not enabled
##### foo is unsatisfied = true
##### bar is unsatisfied = false
bar is: org.example.weldtest.BarBean