By running the testsuite against a preliminary version of WildFly patched to include RESTEasy 3.1.0.CR1 (including jaxrs subsystem cleanup of references to API dropped in RESTEASY-1477), I noticed failures in tests that happen to still use resteasy.scan option and the Servlet 2.x container integration approach. So it looks like we should revert 1477 for now and properly drop the whole servlet 2.x support in the future (after having checked possible consequences on the spring and guice integration).