mosquitto:
  Installed: 1.3.5-0ppa1
  Candidate: 1.3.5-0ppa1
  Version table:
 *** 1.3.5-0ppa1 0
        500 http://ppa.launchpad.net/mosquitto-dev/mosquitto-ppa/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status
     0.15-2ubuntu1 0
        500 http://cn.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages