[peter-lyons-kehl]

hi Jorge @japaric,
Thank you for panic-never.

• panic-never is better than any other way of verifying that there's no panic.
• Surprise: panic-never also works for async. Would you like to add these examples for it?
• Also, this shows how to make it link (at least on Linux) using .cargo/config.toml.
• And (on Linux) I've made the non-panicking examples exit/return using a syscall (with asm).
• Side note: I do see your https://github.com/japaric/syscall.rs (and that the original GitHub repo doesn't exist anymore, and the whole crate was yanked on crates.io). I understand that it's difficult ti maintain the syscall crate/repo, and that you (or any one person) don't have resources to test it on so many architectures... So, I do not ask to use syscall for exit. I believe supporting the exit on Linux only (using asm) is enough, and it keeps it simple. (Whoever doesn't run Linux/WSL/docker can easily run it on GitHub Actions and similar.)

[peter-lyons-kehl]

hi Jorge @japaric,
please ignore this PR. As per OpenDevicePartnership/cga#7, all async code has an implicit panic...