anytrait.scala:3: error: this statement is not allowed in universal trait extending from class Any: private[this] var x: Int = 1
  var x = 1
      ^
anytrait.scala:5: error: this statement is not allowed in universal trait extending from class Any: T.this.x_=(T.this.x.+(1))
  { x += 1 }
      ^
two errors found