In any project that's sufficiently advanced and written in any other language. You don't simply do a rewrite of 100k+ LOC just because you want to use Rust.
Somewhere where you'd rather use a scripting language like Python. I.e., rapid prototyping or gluing together some infra components.
A situation where your team's expertise is in some other language.
A situation where a library/framework is native/only available for a certain language.

Few of these are strictly technical requirements. It's obvious that you can use almost any language to do almost anything, including Rust, if that's what you prefer. However, the context matters in the real world.

All this being said, I wish I had a chance to write Rust professionally. It's a neat language.

[–] Croquette@sh.itjust.works 2 points 1 day ago

Lots of your point apply to any language it seems. I should have specified new projects I guess.

But the points you've made are good nonetheless

[–] AnonBD@techhub.social 1 points 1 day ago

@tyo_ukko @Croquette heavy on point 1