t2910.scala:3: error: forward reference extends over definition of value ret
    val ret = l.map({ case MyMatch(id) => id })
                           ^
t2910.scala:9: error: forward reference extends over definition of value z
    println(s.length)
            ^
t2910.scala:16: error: forward reference extends over definition of value z
      x
      ^
t2910.scala:30: error: forward reference extends over definition of value x
    lazy val f: Int = x
                      ^
t2910.scala:35: error: forward reference extends over definition of variable x
    lazy val f: Int = g
                      ^
5 errors found