tasty-lua: remove redundant constraint
@@ -64,7 +64,7 @@ peekUnnamedTree idx = liftLua (Lua.ltype idx) >>= \case
data Outcome = Success | Failure String
-- | Unmarshal a test outcome
-peekOutcome :: LuaError e => Peeker e Outcome
+peekOutcome :: Peeker e Outcome
peekOutcome idx = retrieving "test result" $ do
liftLua (Lua.ltype idx) >>= \case
Lua.TypeString -> Failure <$!> peekString idx
