# Spot the bug: Rust

> One snippet. Find the bug, or prove there isn't one.

Daily challenge: 2026-08-19 (UTC) · Mid-Level

```rust
pub fn is_business_hour(hour: u32) -> bool {
    hour >= 9 || hour < 17
}
```

## Your verdict

- Security flaw
- Logic bug
- Code style
- No issue

One attempt per day. The answer shows up right after.

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