Plant growing in compost bin

84 days into my 365 Clover Challenge: 

On 🌱Day 128, I shared that I made a compost bin. I've been using it ever since. Today, I discovered a plant that feels so well in there that it has grown rapidly. I'm curious what it is and how amazing would it be when it brings forth a home-grown fruit or vegetable!❤️

On the left a picture of a plant growing out of my compost bin; on the right a picture of the same plant from within the compost bin