D:/projects/ruby/ruby-git/test/syslog/test_syslog_logger.rb: cannot load such file -- syslog/logger (LoadError)

D:/projects/ruby/ruby-git/lib/test/unit.rb:534:in `load': undefined class/module WIN32OLERuntimeError (ArgumentError)
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:534:in `block in _run_parallel'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:503:in `each'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:503:in `_run_parallel'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:651:in `_run_suites'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:792:in `_run_anything'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:981:in `run_tests'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:968:in `block in _run'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:967:in `each'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:967:in `_run'
        from D:/projects/ruby/ruby-git/lib/minitest/unit.rb:956:in `run'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:21:in `run'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:765:in `run'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:818:in `run'
        from D:/projects/ruby/ruby-git/lib/test/unit.rb:822:in `run'
        from ../../../ruby-git/test/runner.rb:15:in `<main>'
make: *** [yes-test-all] Error 1