libnative timer doesn't close when using linux

[pethin]

Rust version:

rustc 0.10-pre (fbe26af 2014-03-02 17:36:28 -0800)
host: x86_64-unknown-linux-gnu

When running the program:

extern crate native;

use std::io::timer;

#[start]
fn start(argc: int, argv: **u8) -> int {
    native::start(argc, argv, main)
}

fn main() {
    for i in range(1u, 11) {
        timer::sleep(250);
        println!("{}", i);
    }
}

The program never exits unless timer::sleep(250); is removed.
Running a backtrace returns:

#0  0x00007ffff73207ac in __lll_lock_wait () from /usr/lib/libpthread.so.0
#1  0x00007ffff731e12c in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
#2  0x0000000000520314 in bookkeeping::wait_for_other_tasks::h2c798b302d45d35c2aa::v0.10.pre ()
#3  0x0000000000540f36 in io::timer_helper::boot::closure ()
#4  0x00000000004aa1ff in rt::cleanup::hcd581fdc1c797e7b5Ag::v0.10.pre ()
#5  0x0000000000546f68 in start::h835618e68f53f25aBBd::v0.10.pre ()
#6  0x00000000004058fc in start::hf51dabea8a76ee0ahaa::v0.0 ()
#7  0x000000000040593b in main ()