There is an important point here, which is that even if you've been stable for a while (two years for Rust) and even if you try to get that message out (some people on HN think there are too many posts about Rust), it can take a very long time for broad perception to catch up with reality.

That's not a value judgement on those who didn't know; cache invalidation is a hard problem. But it's an interesting facet of languages that plays out in a number of ways. See the link to Dan Luu's post from forever ago, posted numerous times in this thread as another example.

I'm not sure if Rust is a proper comparison, as the standard library for a language for scientific and technical computing is much larger than a language for systems programming: you want a vast vocabulary to deal with matrices as opposed to a minimalist set of orthogonal features for systems programming. Another consideration: with Julia, it aims to be both a full-featured programming language (with a type system and support for metaprogramming for library developers), as well as approachable enough for a scientist to pick up.