I would say give it time, you can't measure Rust with this yardstick (yet), Rust is a baby in terms of age.
Let's not forget that C is ~50 years old and yet having reliable, open-source, high-quality compilers is a thing of the past 20 years or so. Clang was born in the 2000's, GCC is much older but it wasn't that great of a compiler for some time. Same with VS.