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t1181.scala:8: warning: a pure expression does nothing in statement position; you may be omitting necessary parentheses
case (Nil, Nil) => map
^
t1181.scala:9: error: type mismatch;
found : scala.collection.immutable.Map[Symbol,Symbol]
required: Symbol
_ => buildMap(map.updated(keyList.head, valueList.head), keyList.tail, valueList.tail)
^
one warning found
one error found
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