The thread boundary restriction for catching panics was lifted quite a while ago with std::panic::catch_unwind: https://doc.rust-lang.org/std/panic/fn.catch_unw

The thread boundary restriction for catching panics was lifted quite a while ago with std::panic::catch_unwind: https://doc.rust-lang.org/std/panic/fn.catch_unwind.html https://doc.rust-lang.org/std/panic/fn.catch_unwind.html Do note the caveats in the docs though. It isn't guaranteed to catch all panics. Indeed, unwinding can be disabled completely with a compiler option (instead, panics will abort).