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unchecked-suppress.scala:4: warning: non-variable type argument Int in type pattern scala.collection.immutable.Set[Int] (the underlying of Set[Int]) is unchecked since it is eliminated by erasure
case xs: Set[Int] => xs.head // unchecked
^
unchecked-suppress.scala:5: warning: non-variable type argument String in type pattern scala.collection.immutable.Map[String @unchecked,String] (the underlying of Map[String @unchecked,String]) is unchecked since it is eliminated by erasure
case xs: Map[String @unchecked, String] => xs.head // one unchecked, one okay
^
unchecked-suppress.scala:7: warning: non-variable type argument Int in type pattern (Int, Int) => Int is unchecked since it is eliminated by erasure
case f: ((Int, Int) => Int) => // unchecked
^
error: No warnings can be incurred under -Xfatal-warnings.
three warnings found
one error found
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