Some more tests pass now.  (Also test_compiler.py with -u all.)
diff --git a/Lib/test/test_deque.py b/Lib/test/test_deque.py
index 9bb1472..2809904 100644
--- a/Lib/test/test_deque.py
+++ b/Lib/test/test_deque.py
@@ -245,7 +245,7 @@
         d.append(d)
         try:
             fo = open(test_support.TESTFN, "wb")
-            print(d, end=' ', file=fo)
+            fo.write(str(d))
             fo.close()
             fo = open(test_support.TESTFN, "rb")
             self.assertEqual(fo.read(), repr(d))