{"ast_node_type":"variable","tokens":[{"end":53,"kind":"keyword","start":0,"text":"let"}]}
    let mut stdout = if !version.contains("stable") {
    // then plain rustfmt in case rustup isn't being used to manage the compiler (e.g. when using Nix).
        let version = cmd!(sh, "rustfmt --version").read().unwrap_or_default();