error[E0277]: the trait bound `T: TraitFoo` is not satisfied --> $DIR/copy-impl-cannot-normalize.rs:22:18 | LL | impl Copy for Foo {} | ^^^^^^ the trait `TraitFoo` is not implemented for `T` | note: required for `Foo` to implement `Clone` --> $DIR/copy-impl-cannot-normalize.rs:12:9 | LL | impl Clone for Foo | ^^^^^ ^^^^^^ LL | where LL | T: TraitFoo, | -------- unsatisfied trait bound introduced here note: required by a bound in `Copy` --> $SRC_DIR/core/src/marker.rs:LL:COL help: consider restricting type parameter `T` | LL | impl Copy for Foo {} | ++++++++++ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`.