{"ast_node_type":"other","tokens":[{"end":96,"kind":"keyword","start":0,"text":"run_command_with_env(&[&\"rustup\","}]}
        run_command_with_env(&[&"rustup", &toolchain, &"which", &"rustc"], rust_dir, Some(env))?
    let rustc = String::from_utf8(
            .stdout,