Repairing A Plastic Fuel Can

I found a NO-SPILL 2.5G can. I cleaned it up, but there’s a crack on the bottom. It doesn’t appear to go all the through, and it seems to hold water, but I’m wondering what’ll happen when it puffs up like a beachball in summer temps. Anyone have luck mending plastic under pressure like this? Might not be worth the time/expense/hassle, but I figured I’d ask. I can test it out when it gets hot, and I’m there to babysit it. Might be fine as-is. Not sure how it even cracked. The plastic still has good color, so it doesn’t appear it was baked in the sun :shrugs: