OS X: Programs that exit within 5 milliseconds cause a panic

[AaronM04]

This is colerr v1.0.0 installed with cargo install colerr on Mac OS X Yosemite.

Command:
colerr rm

Expected Result:
It prints in red:

usage: rm [-f | -i] [-dPRrvW] file ...
       unlink file

Actual Result:
It panics:

thread 'mioco_thread_2' panicked at 'register failed: Error { repr: Os { code: 32, message: "Broken pipe" } }', ../src/libcore/result.rs:788
note: Run with `RUST_BACKTRACE=1` for a backtrace.

This works though:

$ colerr -- sh -c 'sleep 0.005; rm'
usage: rm [-f | -i] [-dPRrvW] file ...
       unlink file

A backtrace (note that it now works with a 4ms sleep but not 3ms):

$ RUST_BACKTRACE=1 colerr -- sh -c 'sleep 0.003; rm'
thread 'mioco_thread_2' panicked at 'register failed: Error { repr: Os { code: 32, message: "Broken pipe" } }', ../src/libcore/result.rs:788
stack backtrace:
   1:        0x10adf7feb - std::sys::backtrace::tracing::imp::write::h46e546df6e4e4fe6
   2:        0x10adfa16a - std::panicking::default_hook::_$u7b$$u7b$closure$u7d$$u7d$::h077deeda8b799591
   3:        0x10adf9d9a - std::panicking::default_hook::heb8b6fd640571a4f
   4:        0x10adf0a98 - std::panicking::rust_panic_with_hook::hd7b83626099d3416
   5:        0x10adfa746 - std::panicking::begin_panic::h941ea76fc945d925
   6:        0x10adf16c8 - std::panicking::begin_panic_fmt::h30280d4dd3f149f5
   7:        0x10adfa39f - rust_begin_unwind
   8:        0x10ae202f0 - core::panicking::panic_fmt::h2d3cc8234dde51b4
   9:        0x10ad1992e - core::result::unwrap_failed::h77e8f7274d900d66
  10:        0x10ad4028d - _<mioco..src..evented..RcEventSource<T> as mioco..src..evented..RcEventSourceTrait>::register::he419acfe1b0130aa
  11:        0x10adbe00f - mioco::src::coroutine::Coroutine::register_all::hd49223ae7acf3f9d
  12:        0x10adbd1a6 - mioco::src::CoroutineControl::resume::h8ab0797f08105571
  13:        0x10adbcfcd - _<mioco..src..FifoSchedulerThread as mioco..src..SchedulerThread>::ready::h81ea54d82d9a585e
  14:        0x10adc2e32 - _<mioco..src..thread..Handler as mio..handler..Handler>::notify::h7eb501dd088f06e0
  15:        0x10ad33fd9 - _<mio..event_loop..EventLoop<H>>::run::hbdae82c0e6850f0b
  16:        0x10ad29d16 - mioco::src::Mioco::thread_loop::h8af71a87769d6015
  17:        0x10ad27519 - std::panicking::try::call::hf5640d3bfdda741e
  18:        0x10adfa81b - __rust_try
  19:        0x10adfa7b5 - __rust_maybe_catch_panic
  20:        0x10ad27d64 - _<F as alloc..boxed..FnBox<A>>::call_box::h2756c0c9825d6bda
  21:        0x10adf93a8 - std::sys::thread::Thread::new::thread_start::hf2eed4b6f7149599
  22:     0x7fff934d199c - _pthread_body
  23:     0x7fff934d1919 - _pthread_start

[dpc]

I'm quite this is an mioco issue. Thanks for reporting it!