It very much depends on your skin colour. Me, as a white guy in Austria, no, they wouldn't report me. I'd be very sorry about the mistake and I'd pay for it, and of course it would just be a mistake.
A friend of mine who's parents are from Afghanistan, he gets stopped all the time by store detectives, even though he works as a software developer for the same company. He's never made a scanning mistake, but if he would, there would be no doubt they'd report him. They stop him even though he did nothing suspicious apart from having slightly darker skin and a beard.