gollum migration fails

Created by: rriemann

bundle exec rake gitlab:wiki:migrate RAILS_ENV=production

Migrating Wiki for 'airfoil-designer'
  Created page 'Compile Qt for the Airfoil Designer' [OK]
Project 'airfoil-designer' migrated. [OK]

Migrating Wiki for 'company-documentation'
  Created page 'btrfs Filesystem' [OK]
  Created page 'ccache Comiler Cache' [OK]
    Creating revisions...
    Created revision [OK]
  Created page 'Information on How to Import SVN Repositories to git' [OK]
  Created page 'Git Server Setup with Gitlab' [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
    Creating revisions...
    Created revision [OK]
rake aborted!
undefined method `escaped_url_path' for nil:NilClass
/home/git/gitlab/app/models/wiki_page.rb:160:in `set_attributes'
/home/git/gitlab/app/models/wiki_page.rb:171:in `save'
/home/git/gitlab/app/models/wiki_page.rb:127:in `create'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:50:in `create_page_and_revisions'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:32:in `block in create_pages'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:31:in `each'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:31:in `create_pages'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:17:in `block in migrate!'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:14:in `each'
/home/git/gitlab/lib/wiki_to_gollum_migrator.rb:14:in `migrate!'
/home/git/gitlab/lib/tasks/gitlab/migrate_wiki.rake:17:in `block (3 levels) in <top (required)>'
Tasks: TOP => gitlab:wiki:migrate

Please ask for further information if necessary. Tested against version: 699c9cd4999335212678e26d2d86a10e22d0eb29