preinits.scala:2: warning: Implementation restriction: early definitions in traits are not initialized before the super class is initialized.
trait B extends { override val x = 1 } with A { println("B") }
                               ^
preinits.scala:3: warning: Implementation restriction: early definitions in traits are not initialized before the super class is initialized.
trait C extends { override val x = 2 } with A
                               ^
A
B
2