Kill the worker when we cancel the task.
Kill the worker when we cancel the task.

lyw07/kolibri,jonboiser/kolibri,rtibbles/kolibri,benjaoming/kolibri,jayoshih/kolibri,rtibbles/kolibri,DXCanas/kolibri,indirectlylit/kolibri,lyw07/kolibri,aronasorman/kolibri,lyw07/kolibri,lyw07/kolibri,mrpau/kolibri,learningequality/kolibri,DXCanas/kolibri,jayoshih/kolibri,mrpau/kolibri,learningequality/kolibri,DXCanas/kolibri,christianmemije/kolibri,indirectlylit/kolibri,jonboiser/kolibri,indirectlylit/kolibri,MingDai/kolibri,jonboiser/kolibri,MingDai/kolibri,learningequality/kolibri,rtibbles/kolibri,christianmemije/kolibri,learningequality/kolibri,MingDai/kolibri,DXCanas/kolibri,benjaoming/kolibri,aronasorman/kolibri,christianmemije/kolibri,jayoshih/kolibri,benjaoming/kolibri,jayoshih/kolibri,benjaoming/kolibri,indirectlylit/kolibri,mrpau/kolibri,jonboiser/kolibri,rtibbles/kolibri,mrpau/kolibri,christianmemije/kolibri,aronasorman/kolibri,MingDai/kolibri,aronasorman/kolibri