Bad compiler warning

In a jumble of messages from lots of parallel invocations of ghc I see this message:

Implicit import declaration:
    Warning: In the use of `catch'
             (imported from Prelude, but defined in System.IO.Error):
             Deprecated: "Please use the new exceptions variant, Control.Exception.catch"

That's nice, but what module did this message come from?

Trac metadata

Trac field	Value
Version	7.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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Bad compiler warning