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catch-all.scala:2: error: This catches all Throwables. If this is really intended, use `case _ : Throwable` to clear this warning.
try { "warn" } catch { case _ => }
^
catch-all.scala:4: error: This catches all Throwables. If this is really intended, use `case x : Throwable` to clear this warning.
try { "warn" } catch { case x => }
^
catch-all.scala:6: error: This catches all Throwables. If this is really intended, use `case x : Throwable` to clear this warning.
try { "warn" } catch { case _: RuntimeException => ; case x => }
^
three errors found
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