1 error: methods with the following characteristics: (`to_*` and `self` type is not `Copy`) usually take `self` by reference
2 --> $DIR/wrong_self_convention2.rs:28:19
4 LL | fn to_u64(self) -> u64 {
7 = note: `-D clippy::wrong-self-convention` implied by `-D warnings`
8 = help: consider choosing a less ambiguous name
10 error: aborting due to previous error