internal compile error when using core::num::Float::sqrt

[Pytheas01]

Rust version: 0.11
Platform: MacosX Mavericks
Error Message:

rustc src/pointer7.rs
ERROR:serialize::ebml::reader: failed to find block with tag 7
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with RUST_BACKTRACE=1 for a backtrace
task 'rustc' failed at 'explicit failure', /Users/rustbuild/src/rust-buildbot/slave/nightly-mac/build/src/libserialize/ebml.rs:227

---

Program:

extern crate core;
use std::rc::Rc;
struct Point {x: f64, y: f64}

fn compute_distance(p1: Rc, p2: Rc) -> f64 {
let x_d = p1.x - p2.x;
let y_d = p1.y - p2.y;
::core::num::Float::sqrt(x_d * x_d + y_d * y_d)
}

fn main() {

println!("{}", 
    compute_distance(
    Rc::new(Point {x: 1.0, y: 2.0}),
    Rc::new(Point {x: 3.0, y: 4.0})));

}

[alexcrichton]

Closing as a dupe of #12919