RS.CLIPPY.MANUAL_ASSERT

`panic!` and only a `panic!` in `if`-then statement

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: manual_assert. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Detects if-then-panic! that can be replaced with assert!.

Why is this bad?

assert! is simpler than if-then-panic!.

Example

let sad_people: Vec<&str> = vec![];
if !sad_people.is_empty() {
    panic!("there are sad people: {:?}", sad_people);
}

Use instead:

let sad_people: Vec<&str> = vec![];
assert!(sad_people.is_empty(), "there are sad people: {:?}", sad_people);