(samba-merge-4.6.5)andreas@nsn7:~/git/merges/samba$ git ubuntu merge finish ubuntu/devel
06/23/2017 17:38:57 - INFO:Using git repository at /home/andreas/git/merges/samba
Traceback (most recent call last):
  File "/snap/git-ubuntu/63/bin/git-ubuntu", line 18, in <module>
    main()
  File "/snap/git-ubuntu/63/gitubuntu/__main__.py", line 203, in main
    args.func(args)
  File "/snap/git-ubuntu/63/gitubuntu/merge.py", line 379, in main
    self.do_finish()
  File "/snap/git-ubuntu/63/gitubuntu/merge.py", line 287, in do_finish
    self.do_merge_changelogs()
  File "/snap/git-ubuntu/63/gitubuntu/merge.py", line 176, in do_merge_changelogs
    self.merge_base_id, 'debian/changelog')
  File "/snap/git-ubuntu/63/gitubuntu/git_repository.py", line 469, in extract_file_from_treeish
    if '%s missing' % changelog_file in open(outfile).read():
TypeError: invalid file: <tempfile._TemporaryFileWrapper object at 0x7fe6e9165198>