执行后显示: $ python x.py help INFO: Downloading and building bootstrap before processing --help command. See src/bootstrap/README.md for help with common commands. downloading https://static.rust-lang.org/dist/2024-02-08/rust-std-1.76.0-x86_64-pc-windows-msvc.tar.xz #### 4.1% 还是下载msvc版,这正常吗