Please rebase/resubmit this against lp:ubuntu/upstart (~ubuntu-branches/ubuntu/wily/upstart/wily).
Also, it seems to me like if you used libjson-c-dev in Build-Depends rather than libjson-c2, you could altogether remove libjson from binary Depends, since it will be added automatically via ${shlibs:Depends}.
Please rebase/resubmit this against lp:ubuntu/upstart (~ubuntu- branches/ ubuntu/ wily/upstart/ wily).
Also, it seems to me like if you used libjson-c-dev in Build-Depends rather than libjson-c2, you could altogether remove libjson from binary Depends, since it will be added automatically via ${shlibs:Depends}.