An error with the render pipeline on macOS

[Egeyae]

So I'm using a macOS HighSierra (10.13.6) and encountered an issue while using nannou.
I'm running this:

use nannou::prelude::*;

fn main() {
    nannou::sketch(view).size(500, 500).run();
}

fn view(app: &App, frame: Frame) {
    // get canvas to draw on
    let draw = app.draw();

    // set background to blue
    draw.background().color(BLACK);
    draw.rect()
        .x_y(0.0, 0.0)
        .w_h(100.0, 100.0)
        .color(PLUM);

    // put everything on the frame
    draw.to_frame(app, &frame).unwrap();
}

It compiles without problem but when i run my program it panics with:

thread 'main' panicked at 'wgpu error: Validation Error

Caused by:
    In Device::create_render_pipeline
      note: label = `nannou render pipeline`
    Internal error in FRAGMENT shader: Metal: Compilation failed: 

program_source:31:29: error: unknown type name 'uint'; did you mean 'int'?
    if (mode == static_cast<uint>(0)) {
                            ^~~~
                            int
program_source:34:33: error: unknown type name 'uint'; did you mean 'int'?
        if (mode == static_cast<uint>(1)) {
                                ^~~~
                                int
program_source:37:37: error: unknown type name 'uint'; did you mean 'int'?
            if (mode == static_cast<uint>(2)) {
                                    ^~~~
                                    int

Maybe it's because I have a too old version of macOS.
The solution I found is to use nannou 0.17.0 but I would like to know if there is any other way.

Moreover, if I remove the draw.rect(), there is no error but an empty window is not that interesting :)