structuredAttrs is enabled

trying https://crates.io/api/v1/crates/metrics-exporter-prometheus/0.18.3/download
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
  0      0   0      0   0      0      0      0                              0
100  63947 100  63947   0      0 161.5k      0                              0