lawlberg
Booth Babe
The scratches are actually on the interior of the tank, almost directly below the opening.
Those are just scratches from the pump nozzle resting inside the tank while it's being filled. I've got them on mine, nothing dangerous there - though mine aren't rusty at all. If those scratches are rusty on it, probably a bit of water in the tank like others have said. Shouldn't be too big of an issue though.