Copy note from leakers README here too. We want to keep all test cases.
diff --git a/Lib/test/crashers/README b/Lib/test/crashers/README
index 9369282..070c3f1 100644
--- a/Lib/test/crashers/README
+++ b/Lib/test/crashers/README
@@ -13,3 +13,8 @@
Put as much info into a docstring or comments to help determine
the cause of the failure. Particularly note if the cause is
system or environment dependent and what the variables are.
+
+Once the crash is fixed, the test case should be moved into an appropriate
+test (even if it was originally from the test suite). This ensures the
+regression doesn't happen again. And if it does, it should be easier
+to track down.