comprehensive-rust/src/error-handling/panic-unwind.md

Catching the Stack Unwinding

By default, a panic will cause the stack to unwind. The unwinding can be caught:

use std::panic;

let result = panic::catch_unwind(|| {
    println!("hello!");
});
assert!(result.is_ok());

let result = panic::catch_unwind(|| {
    panic!("oh no!");
});
assert!(result.is_err());

• This can be useful in servers which should keep running even if a single request crashes.
• This does not work if panic = 'abort' is set in your Cargo.toml.