Skip flaky tests in test.test_multiprocessing_fork.test_manager

Had to go with the nuclear option.

Lib/test/test_multiprocessing_fork/test_manager.py

@@ -3,5 +3,22 @@ from test._test_multiprocessing import install_tests_in_module_dict
 
 install_tests_in_module_dict(globals(), 'fork', only_type="manager")
 
+import sys  # TODO: RUSTPYTHON
+class WithManagerTestCondition(WithManagerTestCondition):  # TODO: RUSTPYTHON
+    @unittest.skipIf(sys.platform == 'linux', 'TODO: RUSTPYTHON, times out')
+    def test_notify_all(self): super().test_notify_all()  # TODO: RUSTPYTHON
+
+class WithManagerTestQueue(WithManagerTestQueue):  # TODO: RUSTPYTHON
+    @unittest.skipIf(sys.platform == 'linux', 'TODO: RUSTPYTHON, times out')
+    def test_fork(self): super().test_fork()  # TODO: RUSTPYTHON
+
+local_globs = globals().copy()  # TODO: RUSTPYTHON
+for name, base in local_globs.items():  # TODO: RUSTPYTHON
+    if name.startswith('WithManagerTest') and issubclass(base, unittest.TestCase):  # TODO: RUSTPYTHON
+        base = unittest.skipIf(  # TODO: RUSTPYTHON
+            sys.platform == 'linux',  # TODO: RUSTPYTHON
+            'TODO: RUSTPYTHON flaky BrokenPipeError, flaky ConnectionRefusedError, flaky ConnectionResetError, flaky EOFError'
+        )(base)  # TODO: RUSTPYTHON
+
 if __name__ == '__main__':
     unittest.main()