illumos LX (void linux) rustup hang - tokio hang bug

Cargo.toml

[package]
name = "tokio-test"
version = "0.1.0"
edition = "2021"

[dependencies]
tokio = { version = "1.17.0", features = ["full"] }

main.rs

use tokio::fs;
use tokio::runtime::Builder;

fn main() {
    let runtime = Builder::new_current_thread()
        .enable_all() // THIS IS THE LINE THAT CAUSES THE BREAKAGE (this is default from the `tokio::main` macro)
        .build()
        .unwrap();

    runtime.block_on(async {
        let want_data = b"data\n";
        let fname = "foo.txt";

        fs::write(fname, want_data).await.unwrap();
        let got_data = fs::read(fname).await.unwrap();

        println!("want_data = {:?}", want_data);
        println!("got_data = {:?}", got_data);
        assert_eq!(got_data, want_data);
    });
}

this bug has been narrowed down to epoll -> https://gist.github.com/bahamas10/d158ac87271c926aa32a0528faca03d6