error: manual implementation of `Instant::elapsed` --> $DIR/manual_instant_elapsed.rs:18:20 | LL | let duration = Instant::now() - prev_instant; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `prev_instant.elapsed()` | = note: `-D clippy::manual-instant-elapsed` implied by `-D warnings` error: manual implementation of `Instant::elapsed` --> $DIR/manual_instant_elapsed.rs:27:5 | LL | Instant::now() - *ref_to_instant; // to ensure parens are added correctly | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(*ref_to_instant).elapsed()` error: aborting due to 2 previous errors