@EJB injection into JAX-RS resource not working

i have a simple JAX-RS Resource bean:

@Path("/demo")
public class DemoResource {
@EJB
private ServiceInterface service;

public DemoResource()

@GET
@Produces("application/xml")
public StreamingOutput doSomething() {

service.doSomething();

// more code ...

which references a stateless session bean. the JAX-RS resource is inside a war module, the SLSB in an eab module, both under the same ear.
injection of the SLSB into the JAX-RS Resource is not working - field is null.

from looking ta the server log this is not an order of init. issue since the jax-rs bean is deployed after the SLSB has been bound to JNDI:
09:29:48,410 INFO [JndiSessionRegistrarBase] Binding the following Entries in Global JNDI:

ear-1.0-SNAPSHOT/serviceImpl/local - EJB3.x Default Local Business Interface
ear-1.0-SNAPSHOT/serviceImpl/local-demo.ServiceInterface - EJB3.x Local Business Interface

09:29:49,159 INFO [TomcatDeployment] deploy, ctxPath=/jax-rs

im attaching the maven project as well the the ear for anyone who wants to reproduce.
steps to reproduce:
1. build ear (mvn clean install)
2. deploy ear on jboss 6 M5
3. access http://localhost:8080/jax-rs/demo/ with a web browser
4. watch the fireworks