rust/src/test/ui/trait-impl-bound-suggestions.stderr

error[E0277]: the trait bound `X: Copy` is not satisfied
  --> $DIR/trait-impl-bound-suggestions.rs:14:52
   |
LL | struct ConstrainedStruct<X: Copy> {
   |                             ---- required by this bound in `ConstrainedStruct`
...
LL |     fn return_the_constrained_type(&self, x: X) -> ConstrainedStruct<X> {
   |                                                    ^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `X`
   |
help: consider further restricting type parameter `X`
   |
LL | trait InsufficientlyConstrainedGeneric<X=()> where X: Copy {
   |                                              ^^^^^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
fix syntax error in suggesting generic constraint in trait parameter suggest `where T: Foo` for the first bound on a trait, then suggest `, T: Foo` when the suggested bound would add to an existing set of `where` clauses. `where T: Foo` may be the first bound if `T` has a default, because we'd rather suggest ``` trait A<T=()> where T: Copy ``` than ``` trait A<T: Copy=()> ``` for legibility reasons. 2020-09-14 03:55:06 +00:00			error[E0277]: the trait bound `X: Copy` is not satisfied
			`--> $DIR/trait-impl-bound-suggestions.rs:14:52`
			`\|`
			`LL \| struct ConstrainedStruct<X: Copy> {`
			\| ---- required by this bound in `ConstrainedStruct`
			`...`
			`LL \| fn return_the_constrained_type(&self, x: X) -> ConstrainedStruct<X> {`
			\| ^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `X`
			`\|`
			help: consider further restricting type parameter `X`
			`\|`
			`LL \| trait InsufficientlyConstrainedGeneric<X=()> where X: Copy {`
			`\| ^^^^^^^^^^^^^`

			`error: aborting due to previous error`

			For more information about this error, try `rustc --explain E0277`.