Lint `assert!` without message

[HMPerson1]

What it does

Lint {debug_}assert{_eq,_ne}! without a custom panic message. (inspired by this tweet)

Categories (optional)

• Kind: pedantic

What is the advantage of the recommended code over the original code

If the assertion fails, it might be easier to diagnose why.

Drawbacks

None.

Example

assert!(some_condition(foo));
debug_assert_eq(a, bar(b));

Could be written as:

assert!(some_condition(foo), "foo failed some condition: foo = {}", foo);
debug_assert_eq!(a, bar(b), "failed to find inverse of bar at {}", a);

[unexge]

@rustbot claim