{"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"CannotCaptureDynamicEnvironmentInFnItem,"}]}
    CannotCaptureDynamicEnvironmentInFnItem,
    /// Error E0434: can't capture dynamic environment in a fn item.
    /// Error E0435: attempt to use a non-constant value in a constant.