libgcc1:
  Installed: 1:5.1~rc1-0ubuntu1.1
  Candidate: 1:5.1~rc1-0ubuntu1.1
  Version table:
 *** 1:5.1~rc1-0ubuntu1.1 0
        100 /var/lib/dpkg/status
     1:5.1~rc1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages