update nightly torch and test the flaky test (#837)

Co-authored-by: Min Xu <min.xu.public@gmail.com>

.circleci/config.yml

@@ -116,7 +116,7 @@ install_dep_pytorch_nightly: &install_dep_pytorch_nightly
         # check if we have restored venv cache (/home/circleci/venv) correctly, if so, just skip
         if [ -f /home/circleci/venv/check_version.py ]; then python /home/circleci/venv/check_version.py torch eq 1.10 && exit 0; fi
         # start installing
-        pip install --progress-bar off --pre torch==1.11.0.dev20211018+cu111 torchvision==0.12.0.dev20211018+cu111 -f https://download.pytorch.org/whl/nightly/cu111/torch_nightly.html
+        pip install --progress-bar off --pre torch==1.11.0.dev20211101+cu111 torchvision==0.12.0.dev20211101+cu111 -f https://download.pytorch.org/whl/nightly/cu111/torch_nightly.html
         pip install --progress-bar off -r requirements-test.txt
         pip install --progress-bar off -r requirements-benchmarks.txt
         python -c 'import torch; print("Torch version:", torch.__version__)'