[("tests/examples/Lambda16.hs:1:10: Warning: Avoid lambda\nFound:\n  \\ x -> x * y\nWhy not:\n  (* y)\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 10, endLine = 1, endCol = 21}, subts = [], orig = "(* y)"}])]