Zeroday 01100100011010010

I’ve been working on some DNS resolution code for a while now. It is multithreaded using event machine. The resolution code is wrapped in a begin/rescue statement yet it still errors out occasionally with the following error that I have never been able to rescue.
/usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/select_thread.rb:147:in `select': time interval must be positive (ArgumentError)
from /usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/select_thread.rb:147:in `do_select'
from /usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/select_thread.rb:62:in `initialize'
from /usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/select_thread.rb:61:in `initialize'
from /usr/lib/ruby/1.8/thread.rb:135:in `synchronize'
from /usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/select_thread.rb:48:in `initialize'
from /usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/inflector.rb:257:in `new'
from /usr/lib/ruby/1.8/singleton.rb:95:in `instance'
from /usr/lib/ruby/gems/1.8/gems/dnsruby-1.1/lib/Dnsruby/Resolver.rb:806:in `send_async'
... 11 levels...
from ./stats_common.rb:66:in `resolve_block'
from ./stats_common.rb:64:in `resolve_block'
from ./resolve_urls.rb:16:in `resolve_urls'
from stats_engine.rb:44