My crockpot turned off while making beef stre

I put uncooked beef in my crockpot with veggies. Cooked it for 7 hours. I went to bed thinking it would continue to cook thru the night and it turned itself off during the night. When I woke up it was luke warm. I don't own a thermometer so I couldn't check the temperature. Is it safe to eat if I reheat it?