{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"self.get_alloc_raw_mut(id)?.0.mutability"}]}
        self.get_alloc_raw_mut(id)?.0.mutability = Mutability::Not;
    pub fn alloc_mark_immutable(&mut self, id: AllocId) -> InterpResult<'tcx> {
        interp_ok(())