In a comment on another Rust-related post, the author noted that, "rust definitely skews younger than average. i don't have statistics on hand, but almost all people i know working on the project are younger than 35, and a surprising number are 17-25."
I've messed with Rust a bit and I like it. I like the ideas and lack of compromise. But good ideas and a lack of compromises are what you get from youth, along with the arrogance of style choices that make things harder to understand. Will Rust stick around once these folks have bigger responsibilities?