Essentially SF patch 1061679:  add missing __all__ to pickletools.py.
Harmless.
diff --git a/Lib/test/test___all__.py b/Lib/test/test___all__.py
index 0794bd8..3bddcad 100644
--- a/Lib/test/test___all__.py
+++ b/Lib/test/test___all__.py
@@ -114,6 +114,7 @@
         self.check_all("os2emxpath")
         self.check_all("pdb")
         self.check_all("pickle")
+        self.check_all("pickletools")
         self.check_all("pipes")
         self.check_all("popen2")
         self.check_all("poplib")