The WiredTiger cursor cache doesn't handle all possible locked handle states.
It's possible for the cursor cache to obtained a locked handle that isn't open, in which case the engine will drop core when it attempts to access the handle tree's root page.
WT-4340 The cursor caching layer can incorrectly release too many handle locks
- is depended on by
SERVER-36920 Remove skipValidationNamespaces for the oplog after WiredTiger segmentation fault has been resolved.