15.4K lines of code later, this new dev tool is done. Enough for now, anyway. Not sure why I needed to write it so badly, just did.
Spent a large part of the day coding. A new dev tool for the day job. In Rust, building skills with it specifically for web apps.
Oh, now that is cool. Syntax checker in my vim setup, syntastic, supports rust and just caught a syntax error as I made it.