How to crash javac

CrashesJavac.java

public class TestExtendConsumer {

    @FunctionalInterface public interface NumberConsumer<E extends Number> extends java.util.function.Consumer<E>{void accept(E number);}

    private static <E extends Number> void extend(E number) {
        System.out.println(number);
    }

    public static void main(String[] args) {
        NumberConsumer numberConsumer = TestExtendConsumer::extend;
        //works with NumberConsumer<Integer>
        numberConsumer.accept(1);

    }
}