Implicit closure coercion conflicts with DGM methods in type checked mode

The problem is highlighted with Java 8, where a Collection.sort(Comparator) method has been added. Given the following code:

list.sort { a,b -> a<=>b }

which takes a closure, then the type checker chooses the default method from Collection, Collection.sort(Comparator) because an implicit coercion of Closure to Comparator is possible.

However, there's a DGM#sort(Collection,Closure) method which should have been preferred.

The result is a build failure as seen in http://148.251.23.208:8111/viewLog.html?buildId=35&tab=buildResultsDiv&buildTypeId=Groovy_Jdk8Build