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@@ -10,6 +10,11 @@ What's New in Python 3.3.1
Core and Builtins
-----------------
+- Issue #13992: The trashcan mechanism is now thread-safe. This eliminates
+ sporadic crashes in multi-thread programs when several long deallocator
+ chains ran concurrently and involved subclasses of built-in container
+ types.
+
- Issue #15839: Convert SystemErrors in super() to RuntimeErrors.
- Issue #15846: Fix SystemError which happened when using ast.parse in an