rustc 报错，我连个 hello world 都写不出来

[eightqueen]

1. 代码

   fn main() {
       println!("Hello world!");
   }
   

2. rustc main.rs 报错 error: couldn't load codegen backend "/usr/local/lib/rustlib/i686-apple-darwin/codegen-backends/librustc_codegen_llvm-llvm.dylib": "dlsym(RTLD_DEFAULT, CFURLConnectionCreateWithProperties): symbol not found"

3. 系统：MacOS，rustc 1.30.1，gcc：Apple LLVM version 8.0.0 (clang-800.0.42.1)

[sidgwick]

你 rustc 是怎么安装的?

[eightqueen]

@sidgwick mac 升级到最新