{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"self.warn_about_dead_assign(vec![expr.span],"}]}
                    self.warn_about_dead_assign(vec![expr.span], expr.hir_id, ln, var, sugg);
                    let sugg = self.annotate_mut_binding_to_immutable_binding(var_hid, expr);
                }