diff -r 23119371df5e -r fa270dcbdb55 tests/test-stdio.py
--- a/tests/test-stdio.py	Thu Jul 09 02:16:26 2020 +0200
+++ b/tests/test-stdio.py	Sat Jul 11 06:03:22 2020 +0200
@@ -126,18 +126,6 @@
             test_buffering_stdout_ptys_unbuffered
         )
 
-    def test_buffering_stderr_pipes(self):
-        self._test('stderr', _pipes, UNBUFFERED)
-
-    def test_buffering_stderr_ptys(self):
-        self._test('stderr', _ptys, UNBUFFERED)
-
-    def test_buffering_stderr_pipes_unbuffered(self):
-        self._test('stderr', _pipes, UNBUFFERED, python_args=['-u'])
-
-    def test_buffering_stderr_ptys_unbuffered(self):
-        self._test('stderr', _ptys, UNBUFFERED, python_args=['-u'])
-
 
 if __name__ == '__main__':
     import silenttestrunner