That's addressed in the article. The LLVM backend is on the way and Rust will be able to take advantage of it relatively easily, it seems. Emscripten is more of

That's addressed in the article. The LLVM backend is on the way and Rust will be able to take advantage of it relatively easily, it seems. Emscripten is more of an intermediate step to get Rust working on the web in the meantime—I doubt it's going to be the long-term solution for Rust on the web.