I’ve seen this happen on when I run fastai code so far.
I’m getting notebook truncated output with a Timeout IOpub error when running my notebooks via papermill. This timeout error seems to be a fixed issue, and a quick glance through papermill code indicates that the timeout is set to None (so indefinite timeout), and I even tried setting the timeout to 1mil secs. But in all cases I would not get the output of my cell. I have other notebooks (no fastai code), and those work fine with papermill.
Does fastai use any non-standard libraries that might be causing that issue? I’ve somewhat narrowed it down to the training progress bar, as I never get a complete one ever.