$ .venv/bin/s3rm --profile default --bucket-name bgdi-tod-cache-dev --prefix /1.0.0/ch.swisstopo.landeskarte-farbe-10/default/current/2056/ --bbox 2672500,1212000,2681250,1218000 --image-format png -n 5 -f
kill -9 <<parent pid>>
# the new parent process is 1!
INFO:tool_aws.s3.rm:Worker pid 32078 and parent pid 1
INFO:tool_aws.s3.rm:Deleting 1000 keys at a time
sudo kill -9 <>
sorry
and I can't reproduce, Though I believe you. Just tests and it works fine for me.
Anyway, keyboard interrupt should work as well, something to address in poolmanager when we have time.