RUSTSEC-2021-0145: Potential unaligned read about lunatic

[bkolobara]

Thanks @dalmoveras. Would really appreciate a pull request if we can easily drop the lib.

[dalmoveras]

Hey! I'd love to work on this one.. I think should be an easy fix.
Already grepped by Atty on the code and found almost nothing:

lunatic$ git grep "atty"
Cargo.lock:name = "atty"
Cargo.lock: "atty",
Cargo.lock: "atty",
crates/lunatic-stdout-capture/src/lib.rs:    fn isatty(&self) -> bool {
deny.toml:    # atty advisory Windows - TBD

Let me know your thoughts