{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"debug!(\"get_upvar_index_for_region:"}]}
                debug!("get_upvar_index_for_region: upvar_ty={upvar_ty:?}");
            self.universal_regions().defining_ty.upvar_tys().iter().position(|upvar_ty| {
                tcx.any_free_region_meets(&upvar_ty, |r| {