syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"Ty::new_ref(self.tcx,"}]}
source_snippet:                     Ty::new_ref(self.tcx, self.tcx.lifetimes.re_erased, ptr_target_ty, mutbl);
context_before:                 let new_pin_target =
context_after:                 let expr = self.thir.exprs.push(Expr {