To ssh://git.launchpad.net/~aixtools/cloud-init
 ! [rejected]        aix-port -> aix-port (non-fast-forward)
error: failed to push some refs to 'ssh://aixtools@git.launchpad.net/~aixtools/cloud-init'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Integrate the remote changes (e.g.
hint: 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.