172. #[track_caller] — Point the Panic at the Caller, Not Your Helper

Sat, 30 May 2026 17:00:00 +0100

You wrap an assert in a helper to clean up your tests. Now every failure points at the helper’s source line instead of the test that called it. #[track_caller] fixes that with a single line of code.

Panic on rustbites

172. #[track_caller] — Point the Panic at the Caller, Not Your Helper