Skip TestHub on macOS (pytorch#26033)

Summary:
Pull Request resolved: pytorch#26033

[test macos]

Test Plan: Imported from OSS

Differential Revision: D17323698

Pulled By: pietern

fbshipit-source-id: 1b5805d2b0f693d05a807299df4941a6bb528801

test/test_utils.py

@@ -14,7 +14,7 @@
 import torch.hub as hub
 from torch.autograd._functions.utils import prepare_onnx_paddings
 from torch.autograd._functions.utils import check_onnx_broadcast
-from common_utils import skipIfRocm, load_tests
+from common_utils import skipIfRocm, load_tests, IS_MACOS
 
 # load_tests from common_utils is used to automatically filter tests for
 # sharding on sandcastle. This line silences flake warnings
@@ -519,6 +519,7 @@ def sum_of_model_parameters(model):
 
 SUM_OF_PRETRAINED_RESNET18_PARAMS = -12703.992365
 
+@unittest.skipIf(IS_MACOS, 'Broken on macOS; see #26032')
 class TestHub(TestCase):
     @classmethod
     def setUpClass(cls):