They&#x27;ve talked about it on Reddit a lot. <a href="https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;programming&#x2F;comments&#x2F;3w8dgn&#x2F;announcing_rust_15&#x2F;cxucrse?context=2" rel="nofollow">https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;programming&#x2F;comments&#x2F;3w8dgn&#x2F;announc...</a><p>Their Rust stuff is closed source, not open source.