/usr/share/jetty8/lib/ is in libjetty8-java 8.1.19-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/jetty8/lib/ext/
/usr/share/jetty8/lib/jetty-continuation-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-deploy-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-http-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-io-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-jaspi-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-jmx-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-jsp-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-nested-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-overlay-deployer-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-policy-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-rewrite-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-security-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-server-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-servlet-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-servlets-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-util-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-webapp-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-websocket-8.1.19.v20160209.jar
/usr/share/jetty8/lib/jetty-xml-8.1.19.v20160209.jar
/usr/share/jetty8/lib/servlet-api-3.0.jar