Attempt to increase timeout for circleci slow tests (#2844)

.circleci/config.yml

@@ -28,6 +28,8 @@ jobs:
             - checkout
             - run: sudo pip install .[mecab,sklearn,tf-cpu,torch,testing]
             - run: python -m pytest -n 8 --dist=loadfile -s -v ./tests/
+            - no_output_timeout: 4h
+
     run_tests_torch:
         working_directory: ~/transformers
         docker: