It's a little bit embarrassing that a Fortran compiler provides a shell for interactive use, yet the Rust project, with at least two orders of magnitude more development effort, does not.
In all seriousness though, Rust got many things right and showed how a modern language, compiler and a package manager should behave. I think it genuinely moved the state-of-the-art. And we are trying hard to improve on the state-of-the-art as well. I think a modern compiler should compile fast in Debug mode, and generate high performance code in Release mode. And it should compile to a binary as well as work interactively. Etc.