在 GC 期间,当一个 `mode='wrap'` 验证器的 `handler` 超出验证期限(共享验证器树被遍历两次)时,发生了引用计数损坏

Run with a debug build of CPython ('--with-pydebug'); 'Python -X dev' is not enough because the assertion lives in 'gc.c':