Can't convert nil into String

[rastasheep]

└── semaphore
   ├── new-chan-name :: passed (1) :: 28 days and 20 hours ago
   ├── rspec-update :: passed (4) :: 20 hours and 44 minutes ago
   ├── /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:85:in `+': can't convert nil into String (TypeError)
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:85:in `branch_info'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:80:in `print_branch'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:68:in `block in print_branches'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:62:in `each'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:62:in `each_with_index'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:62:in `print_branches'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:54:in `print_project'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:38:in `block in tree'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:36:in `each'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:36:in `each_with_index'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/lib/semaphore-status.rb:36:in `tree'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/bin/sst:67:in `get_projects'
        from /usr/local/lib/ruby/gems/1.9.1/gems/semaphore-status-0.0.2/bin/sst:120:in `<top (required)>'
        from /usr/local/bin/sst:23:in `load'
        from /usr/local/bin/sst:23:in `<main>'

There is cases when branch is in strange state, investigate this.