.

tests/test_genome.py

@@ -270,12 +270,12 @@ def helper(gen: Optional[int] = None, title: Optional[str] = None):
                  ext="png", debug="depths;keepdot", title=title)
 
         if capfd is not None:  # pragma: no branch
-            captured = capfd.readouterr()
-            captured = re.sub(
+            err = capfd.readouterr().err
+            err = re.sub(
                 r"dot: graph is too large for cairo-renderer bitmaps[^\n]*\n",
-                "", captured
+                "", err
             )
-            assert len(captured.err) == 0
+            assert len(err) == 0
 
         setattr(helper, 'gen', getattr(helper, 'gen') + 1)
     return helper