Failure @43 (⟨2, 12⟩): expected ')'
Final stack:
  (Lean.Doc.Syntax.codeblock
   "```"
   [`scheme
    [(Lean.Doc.Syntax.named
      "("
      `dialect
      ":="
      (Lean.Doc.Syntax.arg_str
       (str "\"chicken\""))
      <missing>)]]
   "\n"
   (str "\"x\\n\"")
   "```")
Remaining: "\nx\n```"