It works whenever it's configured to unwind, which is the default. Apparently one can force this by adding a few lines in the rustler Cargo.toml (https://doc.ru

It works whenever it's configured to unwind, which is the default. Apparently one can force this by adding a few lines in the rustler Cargo.toml (https://doc.rust-lang.org/edition-guide/rust-2018/error-handling-and-panics/controlling-panics-with-std-panic.html https://doc.rust-lang.org/edition-guide/rust-2018/error-hand...), I'll create a PR.