LP #1298348: pt-osc unclean abort on critical load

**Reported in Launchpad by Rares Mirica last update 26-08-2014 08:38:21

Running pt-osc with --critical-load triggers an unclean exit upon hitting the critical condition, output attached.

Note: pt-osc does the right thing and leaves the DB in a consistent state (dropping triggers and the new table) BUT it confuses any tool that tries to parse it's output, even human eyes...