structuredAttrs is enabled

trying https://repo1.maven.org/maven2/org/eclipse/jetty/websocket/jetty-websocket-core-server/12.1.3/jetty-websocket-core-server-12.1.3.jar
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed
100  45588 100  45588   0      0 171.8k      0                              0