Starting just in the last nightly or two I have a large amount of EL warnings showing up. They appear to just be for functions such as

JSF Core - xmlns:fn="http://java.sun.com/jsp/jstl/functions"
fn:length
fn:containsIgnoreCase

Richfaces - xmlns:rich="http://richfaces.org/rich"
rich:element
rich:component

Error description says: "length" cannot be resolved
Type is "EL Knowledge Base Problem"