Depends on D2222 (hooray, repdigit \o/)
selected file, Ctrl+C, Ctrl+V in the same folder, waited a bit for the job to show up, now:
* Canceled transfer,, got a persistent "Copying: Failed" notification
* Chose different file name, got a regular "Copying: Finished" notification, nothing in my history
Note: Technically canceling is an "error" and I didn't know any other way to trigger that but obviously we don't show a notification in this case as it would be pointless. This was just for testing and not part of this patch :)