{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"SignatureMismatch(Box<SignatureMismatchData<'tcx>>),"}]}
    SignatureMismatch(Box<SignatureMismatchData<'tcx>>),
    /// didn't resolve. See `confirm_poly_trait_refs` for more.
    /// The trait pointed by `DefId` is dyn-incompatible.