Improve error if the IO#select spec fails
Improve error if the IO#select spec fails

nobu/rubyspec,ruby/rubyspec,ruby/rubyspec,eregon/rubyspec,ruby/spec,eregon/rubyspec,ruby/spec,sgarciac/spec,nobu/rubyspec,sgarciac/spec,nobu/rubyspec,ruby/spec,eregon/rubyspec,sgarciac/spec