An exception occurred inside an at_exit handler:
    Unable to write (EBADF)

Backtrace:
                    IO#write at kernel/core/io.rb:500
           #<IO:0x5c1>.write at ./mspec/runner.rb:13
                       IO#<< at kernel/core/io.rb:400
             Sampler#display at kernel/core/sampler.rb:106
    Profiler__.print_profile at /home/djwhitt/src/rubinius/lib/profiler.rb:13
        Object#__script__ {} at /home/djwhitt/src/rubinius/lib/profile.rb:4
                   Proc#call at kernel/core/proc.rb:84
           Object#__script__ at kernel/loader.rb:273