mkdir -p ~/.config/fish/conf.d/
curl https://sh.rustup.rs -sSf | sh
그냥 설치하면 아래와 같은 에러가 발생한다(https://github.com/rust-lang/rustup/issues/3706)
error: could not amend shell profile: '/home/codespace/.config/fish/conf.d/rustup.fish': could not write rcfile file: '/home/codespace/.config/fish/conf.d/rustup.fish': No such file or directory (os error 2)