Jon has been working on a reasonably large Rust project called Noria[1], "a new streaming data-flow system designed to act as a fast storage backend for read-heavy web applications".

I found his Rust live coding sessions on YouTube[2] to be an enjoyable introduction to Rust.

[1] https://github.com/mit-pdos/noria

[2] https://www.youtube.com/channel/UC_iD0xppBwwsrM9DegC5cQQ