Fail CI on linux for experimenting with output formatting

Author: cmaloney

Lib/test/test_os/test_os.py

@@ -4080,7 +4080,8 @@ def test_memfd_create(self):
         self.assertFalse(os.get_inheritable(fd))
         with open(fd, "wb", closefd=False) as f:
             f.write(b'memfd_create')
-            self.assertEqual(f.tell(), 12)
+            # XXX: Intentional failure to test GitHub Actions job summaries
+            self.assertEqual(f.tell(), 13)
 
         fd2 = os.memfd_create("Hi")
         self.addCleanup(os.close, fd2)