rust/tests/ui/traits/issue-43784-supertrait.stderr
Esteban Küber 6efddac288 Provide more context on derived obligation error primary label
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:

```
error[E0277]: the trait bound `i32: Bar` is not satisfied
 --> f100.rs:6:6
  |
6 |     <i32 as Foo>::foo();
  |      ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
  |
help: this trait has no implementations, consider adding one
 --> f100.rs:2:1
  |
2 | trait Bar {}
  | ^^^^^^^^^
note: required for `i32` to implement `Foo`
 --> f100.rs:3:14
  |
3 | impl<T: Bar> Foo for T {}
  |         ---  ^^^     ^
  |         |
  |         unsatisfied trait bound introduced here
```

Fix #40120.
2024-01-30 21:28:18 +00:00

25 lines
828 B
Plaintext

error[E0277]: the trait bound `T: Copy` is not satisfied
--> $DIR/issue-43784-supertrait.rs:8:22
|
LL | impl<T> Complete for T {}
| ^ the trait `Copy` is not implemented for `T`, which is required by `T: Partial`
|
note: required for `T` to implement `Partial`
--> $DIR/issue-43784-supertrait.rs:1:11
|
LL | pub trait Partial: Copy {
| ^^^^^^^
note: required by a bound in `Complete`
--> $DIR/issue-43784-supertrait.rs:4:21
|
LL | pub trait Complete: Partial {
| ^^^^^^^ required by this bound in `Complete`
help: consider restricting type parameter `T`
|
LL | impl<T: std::marker::Copy> Complete for T {}
| +++++++++++++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.