Apple is positioning Swift as this (and are also moving it from Apple's space on Github etc. into its own and gradually trying to build more of a community), so I wonder if it will catch on more. If people are already using it in the app space, it might be able to branch out into other areas.

Over the last year and a bit they've also been working on strong C++ interop to be able to start using it in their own projects without having to do rewrites, and also better cross-platform and static linking support on Linux which could all make it a lot more attractive.

(For context, like Rust, Swift is both memory safe and data-race safe)

Swift uses garbage collection (I know, arc, but that's still garbage collection), so it more or less is in the same category as Go. And I don't see people choosing Swift over Go any time soon.

C++ and Rust are a different thing.