I think they mean a JIT compiler for a clojure-like language written in rust, with rust interop (instead of Java interop). There would be no static compilation of rust code.
Code is easy, data is hard, the JIT would help with the former only. Rust on JSVM/.NET/JVM/Dart relies on the host platform to provide the underlying object system, reflection, interop with host code, GC etc.
