%h4
  Can't be merged
%p
  This merge request can not be accepted because branch
  - unless @merge_request.source_branch_exists?
    %span.label.label-inverse= @merge_request.source_branch
    does not exist in
    %span.label.label-info= @merge_request.source_project_path
  - else
    %span.label.label-inverse= @merge_request.target_branch
    does not exist in
    %span.label.label-info= @merge_request.target_project_path
  %br
  %strong Please close this merge request or change branches with existing one