FailedConsole Output

Started by upstream project "mir-autolanding" build number 1241
originally caused by:
 Started by remote host 10.220.88.13
Building remotely on jenkins-slave-manager-0 (manager) in workspace /var/lib/jenkins/slaves/jenkins-slave-manager-0/workspace/generic-land-mp
[generic-land-mp] $ /bin/sh -xe /tmp/hudson4729201918368426398.sh
+ autoland --test-result=PASSED --build-job-url=https://mir-jenkins.ubuntu.com/job/mir-autolanding/1241/ --merge-proposal=https://code.launchpad.net/~alan-griffiths/mir/tidy-code/+merge/321093 --revision=4119
DEBUG: fetching branch: lp:~alan-griffiths/mir/tidy-code/
DEBUG: mp_link: https://code.launchpad.net/~alan-griffiths/mir/tidy-code/+merge/321093.
DEBUG: mp.web_link: https://code.launchpad.net/~alan-griffiths/mir/tidy-code/+merge/321093
DEBUG: Using temp dir at /tmp/tmpqObWAw
DEBUG: mp.reviewed_revid is alan@octopull.co.uk-20170327165423-nh6w33hrxpevm7v2
DEBUG: Merging lp:~alan-griffiths/mir/tidy-code to lp:mir
Traceback (most recent call last):
  File "/usr/bin/autoland", line 9, in <module>
    load_entry_point('jenkins-launchpad-plugin==0.1', 'console_scripts', 'autoland')()
  File "/usr/lib/python2.7/dist-packages/jlp/commands/autoland.py", line 262, in autoland
    ret = merge_and_commit(mp, args)
  File "/usr/lib/python2.7/dist-packages/jlp/commands/autoland.py", line 101, in merge_and_commit
    target.merge(source, str(mp.reviewed_revid))
  File "/usr/lib/python2.7/dist-packages/tarmac/branch.py", line 118, in merge
    branch.bzr_branch, to_revision=revid)
  File "<string>", line 4, in merge_from_branch_write_locked
  File "/usr/lib/python2.7/dist-packages/bzrlib/workingtree.py", line 807, in merge_from_branch
    raise errors.PointlessMerge
bzrlib.errors.PointlessMerge: Nothing to merge.
Build step 'Execute shell' marked build as failure
[WS-CLEANUP] Deleting project workspace...[WS-CLEANUP] done
Finished: FAILURE