{"ast_node_type":"variable","tokens":[{"end":85,"kind":"keyword","start":0,"text":"let"}]}
                        let mplace = self.allocate(local_layout, MemoryKind::Stack)?;
                        assert!(local_layout.is_sized(), "unsized locals cannot be immediate");
                        // Preserve old value. (As an optimization, we can skip this if it was uninit.)