When running in --watch mode there are memory leak warnings

[TomFreudenberg]

Issues

Running the simple example.py with dramatiq --watch . example will show the following warning on file changes:

/home/.pyenv/versions/3.12.1/lib/python3.12/multiprocessing/resource_tracker.py:254: UserWarning: resource_tracker: There appear to be 51 leaked semaphore objects to clean up at shutdown
  warnings.warn('resource_tracker: There appear to be %d '

What OS are you using?

MacOS Ventura

What version of Dramatiq are you using?

v1.15.0 (pip install)

What did you do?

Just run the simple example

What did you expect would happen?

No warnings about memory leaks

What happened?

Wether using python 3.12.1 or 3.10.13 the warning is shown on restart due to file change.

Stopping the app via Ctrl-C will shutdown without any warnings