/usr/share/maven-repo/org/mortbay/jetty/start/ is in libjetty-java 6.1.26-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.1.26/
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.1.26/start-daemon-6.1.26.jar
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.1.26/start-daemon-6.1.26.pom
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.x/
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.x/start-daemon-6.x.jar
/usr/share/maven-repo/org/mortbay/jetty/start-daemon/6.x/start-daemon-6.x.pom
/usr/share/maven-repo/org/mortbay/jetty/start/6.1.26/
/usr/share/maven-repo/org/mortbay/jetty/start/6.1.26/start-6.1.26.jar
/usr/share/maven-repo/org/mortbay/jetty/start/6.1.26/start-6.1.26.pom
/usr/share/maven-repo/org/mortbay/jetty/start/6.x/
/usr/share/maven-repo/org/mortbay/jetty/start/6.x/start-6.x.jar
/usr/share/maven-repo/org/mortbay/jetty/start/6.x/start-6.x.pom