Problem trying to migrate cache 
### System Info

Using MacOS Big Sur v11.6.4 and jupyter lab v3.4.7.

### Who can help?

_No response_

### Information

- [ ] The official example scripts
- [x] My own modified scripts

### Tasks

- [ ] An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)
- [ ] My own task or dataset (give details below)

### Reproduction

1. Installed transformers in a new venv with pip
2. Imported autocast from torch and diffusers in jupyter lab, it automatically attempted to migrate the cache and I received this error asking me to open an issue.

code:

```
from torch import autocast
from diffusers import StableDiffusionPipeline
```

<img width="918" alt="differror" src="https://user-images.githubusercontent.com/30514239/191115866-5e239ee8-23b5-4f7d-b55f-0646a63d86a7.png">


### Expected behavior

I opened this because the error messaged asked me to.  I imagine the expected behavior is migrating the cache without incident.
cc @sgugger <|||||>I'm not too sure what the problem is, maybe it is due to the intermediate subfolder. This error should only happen once in any case, and you might have lost some cached files, but they will jsut be re-downloaded.<|||||>Thanks for the clarity.  Didn't cause a problem otherwise.<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md) are likely to be ignored.