An oversight in previous merge, r79610: test_doctest is sensible to the line numbering.
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index ff01238..3616026 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -5,6 +5,7 @@
 from test import support
 import doctest
 
+
 # NOTE: There are some additional tests relating to interaction with
 #       zipimport in the test_zipimport_support test module.