commit 3703bae58b53efec3314bc07b9de157049ad8b70Author: Ned Batchelder <ned@nedbatchelder.com>Date:   Sun Aug 21 09:35:30 2022 -0400    fix: don't cache a failed parse        Found by OSS-Fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50381
