Crash with par_apply_collect, debug, fortran order

[nilgoyette]

I think I found a bug.

use ndarray::{Array3, ShapeBuilder, Zip};

fn main() {
    let data = Array3::<f32>::from_elem((5, 5, 5).f(), 1.0);
    println!("{}", Zip::from(&data).par_apply_collect(|d| d));
}

It works flawlessly in --release, in 'c' order and with any size > 44. It crashes in 'f' order, debug and any array size from 1..45. The size part is really bizarre!

thread 'thread 'thread '<unnamed><unnamed>thread '<unnamed>thread '' panicked at '<unnamed>thread '' panicked at '' panicked at '<unnamed>assertion failed: `(left == right)`
  left: `true`,
 right: `false`'
... lot of scrambled text ...

Tested on Windows, WSL and Ubuntu. Latest version of ndarray and Rust.

[bluss]

Yes, the bug is in the debug assertion here so it is indeed doing the right thing in release mode.