wicket 1.5 build is failing because of 1.6 deps...

[Johan Compagner]

   - Compilation failure
   - 
/data/home/wicket/teamcity-5.0/buildAgent/work/wicket-trunk/wicket/src/main/java/org/apache/wicket/ng/request/Url.java:[147,46]
cannot find symbol

   - symbol  : method copyOf(java.lang.String[],int)
   - location: class java.util.Arrays
   - 
/data/home/wicket/teamcity-5.0/buildAgent/work/wicket-trunk/wicket/src/main/java/org/apache/wicket/ng/request/Url.java:[147,46]
cannot find symbol

   - symbol  : method copyOf(java.lang.String[],int)
   - location: class java.util.Arrays


are we moving to 1.6 form 1.5?