{"ast_node_type":"other","tokens":[{"end":144,"kind":"keyword","start":0,"text":"//"}]}
        // HACK: this check is extremely dumb, but we don't really need it to be smarter since this should only happen in the test suite anyway.
    if env::var_os("RUST_BACKTRACE").is_none() {
        let ui_testing = std::env::args().any(|arg| arg == "-Zui-testing");