{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"TargetDirectory::UseSubdirectory(true)"}]}
            TargetDirectory::UseSubdirectory(true) => {
        self.cargo_targetDir(source_root).as_ref().and_then(|target_dir| match target_dir {
                let env_var = env::var("CARGO_TARGET_DIR").ok();