This is just cosmetical. We actually do want to continue upstart support at least until the next LTS (and also for Ubuntu touch), so we can't just rip that out wholesale yet. But it shouldn't produce that confusing error for sure.
This is just cosmetical. We actually do want to continue upstart support at least until the next LTS (and also for Ubuntu touch), so we can't just rip that out wholesale yet. But it shouldn't produce that confusing error for sure.