cargo run being introduced too late in the Guide

[MatejLach]

What is the reasoning behind showing the cargo run command to the reader in section 'Crates and Modules' of the Guide? This seems too late to me, since cargo run is very useful for rapid iteration and that is exactly what is happening in section 14 Guessing Game, which is the first bigger project that gets shown in the Guide and I think that it would therefore make sense to introduce the cargo run command in that section.
What's your opinion on this @steveklabnik ?

[steveklabnik]

I don't remember exactly why, but it wasn't on purpose. I'd support showing it off earlier.

(I think it's that cargo run didn't exist when I started writing, and I added it whenever it actually landed)