[("tests/examples/Monad18.hs:1:17: Error: Use foldM_\nFound:\n foldM f a xs\nWhy not:\n foldM_ f a xs\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 17, endLine = 1, endCol = 22}, subts = [], orig = "foldM_"}]),("tests/examples/Monad18.hs:1:17: Warning: Use void\nFound:\n foldM f a xs >> return ()\nWhy not:\n Control.Monad.void (foldM f a xs)\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 17, endLine = 1, endCol = 42}, subts = [("a",SrcSpan {startLine = 1, startCol = 17, endLine = 1, endCol = 29})], orig = "Control.Monad.void (a)"}])]