structuredAttrs is enabled

trying https://static.crates.io/crates/metrics-exporter-prometheus/0.18.3/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  63947 100  63947   0      0  1.38M      0                              0