Yes that's the same document I refer to as well. So nothing has changed. A "mildly optimistic" rejection is a rejection of Rust nonetheless. Rust is definitely not "on track" of being adopted in Chromium. For that you'd need more. Right now it's rather a "we are interested, maybe we'll add it". Also note that Chromium engineers also built some languages themselves that solve some of the same problems that Rust solves: https://github.com/google/wuffs

Right, and their issues there all pertain to interoperability, not to issues with the Rust language and its implementation. They seem to view Rust as production-ready, and a language that would bring relevant benefits to the Chromium project, were it not for the C++ interoperability difficulties.

Looks like this will not happen soon: https://groups.google.com/a/chromium.org/g/blink-dev/c/gDA2S...