Cancelling an SSH operation leaves an SSH operation trying to login in the background

[Mary Gardiner]

I have a checkout of a bzr+ssh branch. I do something like the following:

[mary@machine checkout]\$ bzr update
Password:

At this point for whatever reason I decide to cancel the operation and use Ctrl+C/SIGINT to do so.

Control of my tty is returned to me, but something is obviously going on in the background, because without me pressing any further keys or otherwise interfering:

[mary@machine checkout]\$ Password:
Password:
Received disconnect from XXX.YYY.ZZZ.WWW: 2: Too many authentication failures for mary

This is annoying because it's spurious noise, I cancelled the operation for whatever reason and yet SSH goes and completes a full authentication failure for me and spews stuff on my terminal.