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use std::rc::Rc;

trait HKT<U> {
    type C; // Current type
    type T; // Type with C swapped with U
}

macro_rules! derive_hkt {
    ($t:ident) => {
        impl<T, U> HKT<U> for $t<T> {

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extern mod std;

use std::timer;
use std::uv;

fn sleep(ms: uint) {
    let iotask = uv::global_loop::get();
    timer::sleep(iotask, ms);
}

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use pipes::*;
use task::spawn;

fn main() {
    let (p1, c1) = pipes::stream();
    let (p2, c2) = pipes::stream();

    do spawn {
        for int::range(1, 7) |i| {
            c1.send(i);

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use either::*;
use pipes::*;
use task::spawn;

pub trait Clone {
    fn clone(&self) -> self;
}

impl<T: Copy> T: Clone {
    fn clone(&self) -> T {

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struct Noter {
    note: &fn(),
    drop {
        if task::failing() {
            (self.note)();
        }
    }
}

macro_rules! note (

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rust: task failed at 'option::get none', /home/simon/Code/Rust/rust/src/rustc/rustc.rc:1
/usr/local/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x5d)[0x7efffa37afdd]
/usr/local/bin/../lib/librustrt.so(+0x3325d)[0x7efffa39325d]
/usr/local/bin/../lib/librustrt.so(upcall_fail+0x1d0)[0x7efffa37d930]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(+0x29807a)[0x7efffa85c07a]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(_ZN6middle2ty19fold_regions_and_ty16_f447a02294ab0ae3_05E+0x215)[0x7efffa859975]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(+0x297db6)[0x7efffa85bdb6]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(_ZN6middle2ty5subst17_ecd09f5a164ea9b23_05E+0x2fb)[0x7efffa75286b]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(_ZN6middle2ty17lookup_field_type17_a1fa3edba3eb94a23_05E+0x16e)[0x7efffa7a07be]
/usr/local/bin/../lib/librustc-c84825241471686d-0.5.so(+0x1dc62c)[0x7efffa7a062c]

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error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=0,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: task failed at 'explicit failure', /home/rustbuild/src/rustbot/workspace-snap-stage3-x86_64-unknown-linux-gnu/src/src/rustc/driver/rustc.rs:275
/home/simon/Code/Rust/incoming/rust/build/x86_64-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x5d)[0x2b94b8b9fc5d]
/home/simon/Code/Rust/incoming/rust/build/x86_64-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(+0x315ad)[0x2b94b8bb75ad]
/home/simon/Code/Rust/incoming/rust/build/x86_64-unknown-linux-gnu/stage0/bin/../lib/librustrt.so(upcall_fail+0x1d3)[0x2b94b8ba3373]
x86_64-unknown-linux-gnu/stage0/bin/rustc(_rust_main+0xb86)[0x411b56]
x86_64-unknown-linux-gnu/stage0/bin/rustc[0x411f84]
/home/simon/Code/Rust/incoming/rust/build/x86_64-unknown-linux-gnu/stage0/bin/../lib/l

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timsort
 i    2**i    *sort    \sort    /sort    3sort    +sort    %sort    ~sort    =sort    !sort
10    1024     0.72     0.02     0.02     0.22     0.03     0.08     0.65     0.02     0.05
11    2048     1.47     0.03     0.03     0.05     0.04     0.13     1.14     0.03     0.07
12    4096     2.85     0.06     0.06     0.09     0.06     0.42     2.34     0.08     0.13
13    8192     9.06     0.11     0.09     0.12     0.10     1.05     6.81     0.09     0.26
14   16384    13.34     0.21     0.17     0.20     0.12     1.97    12.37     0.17     0.51
15   32768    29.73     0.40     0.31     0.39     0.41     7.54    21.64     0.13     0.98
16   65536    53.93     0.61     0.63     0.77     0.64    12.60    38.80     0.72     1.68
17  131072   104.48     1.66     1.27     2.22     1.27    28.74    81.28     0.70     3.64