Our tests are long running which means we might have a 15-20 minute turn-around on pre-testing commits in Gerrit.

In the cases where a developer quickly realizes their error, and submits a patchset 2, while a patchset 1 is already running wastes a lot of Jenkins slave resources.

Ideally when I upload Change 13, patchset 2, all pending or running jobs triggered off of Change 13, patchset 1, should be cancelled.