{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"//"}]}
    // detect those specifically and project those to `TyKind::Error`.
    // since unconstrained type/const params cause ICEs in projection, so we want to
    let mut res = tcx.ensure_ok().enforce_impl_non_lifetime_params_are_constrained(impl_def_id);