structuredAttrs is enabled

trying https://repo1.maven.org/maven2/org/eclipse/jetty/http2/jetty-http2-hpack/12.1.0/jetty-http2-hpack-12.1.0.jar
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  38964 100  38964   0      0 123.3k      0                              0