Because in case of the problem at hand, this is a complex interplay between Java's standard library's Java code and the underlying JVM. There is not much to discuss regarding "rust would make the code safe", because so does JS as it is single threaded.. That's hardly interesting.
If we put Java on top of Rust, then no, Rust no longer can help about this. That was my whole point.
If we put Java on top of Rust, then no, Rust no longer can help about this. That was my whole point.