I doubt they are “full”. There was an advert in The Pitt News about bike lockers, which seems like a positive move to me. I suspect they had a bunch of new students coming in asking about bike lockers and figured they would sort out the people who no longer wanted one.
I spend at least a few minutes changing shoes, moving stuff in panniers/bags, attaching lights, etc. twice a day, M-F. Other than me, I’ve only seen two people use them (each on more than one occasion). If they really are all rented, it seems like they aren’t very well used around rush hour o’clock. Maybe people who live in dorms rent ’em to store their bikes?
My only other data point is when they wash them out in the spring and the maintenance guy removes the contents of every locker. Last time that happened I counted around 6 bikes, including mine at 9:30-10am on a Thursday morning.
The locker next to mine is still filled with boxes and crap from the 4-square club or whatever they call themselves.