{"ast_node_type":"variable","tokens":[{"end":20,"kind":"keyword","start":0,"text":"let"}]}
        let target =
        assert_eq!(config.cargo_targetDir(None), &Some(TargetDirectory::UseSubdirectory(true)));
            Utf8PathBuf::from(std::env::var("CARGO_TARGET_DIR").unwrap_or("target".to_owned()));