Car randomly wont start??

Hello all, I have a 2014 Corolla S, stick shift.
For a while now at random times the car will not start..

Foot on clutch
Foot on brake
Key is in pocket and I press the start button
Nothing at all happens..

It recognizes the key on the dash but the car doesn't do anything at all. I keep trying and sometimes after 30 minutes it starts and sometimes it works after one or two attempts. Dealer cant find any problems and cant get it to happen of course. Any ideas?