;;;; `let` has no type annotation — parse.ml settles that a triple binding is
;;;; ambiguous and that types are inferred — so a local Vec has nowhere to say
;;;; what it holds, and the element type is written at the call instead. With
;;;; neither, this is refused rather than guessed at.
(defn main [] i32
  (let [v (vec-new)]
    (free v)
    0))