Theo Ouzhinski

In addition, we should probably test whether `CancelledError`s are being trigerred.

For reference, this is an error from this method: https://sentry.tjhsst.edu/tjcsl/ion/issues/610/?query=is%3Aunresolved (internal-only)

For the record. the last release of [pycups](https://pypi.org/project/pycups/) was in October of 2018.

Hi @jwog, Thanks for all your past work on Ion and laying the foundations to what has become a symbol of student innovation at TJ. I fully agree that a...

This was requested by Eighth Office so I am giving it a higher priority.