Macro mirai_annotations::unrecoverable

macro_rules! unrecoverable {
    ($fmt:expr) => { ... };
    ($fmt:expr, $($arg:tt)+) => { ... };
}

Terminates the program with a panic that is tagged as being an unrecoverable error. Use this for errors that arise in correct programs due to external factors. For example, if a file that is essential for running cannot be found for some reason.