rust/tests/ui/suggestions/suggest-dereferencing-index.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

21 lines
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Plaintext

error[E0277]: the type `[{integer}]` cannot be indexed by `&usize`
--> $DIR/suggest-dereferencing-index.rs:6:42
|
LL | let one_item_please: i32 = [1, 2, 3][i];
| ^ slice indices are of type `usize` or ranges of `usize`
|
= help: the trait `SliceIndex<[{integer}]>` is not implemented for `&usize`, which is required by `[{integer}; 3]: Index<_>`
= help: the trait `SliceIndex<[{integer}]>` is implemented for `usize`
= help: for that trait implementation, expected `usize`, found `&usize`
= note: required for `[{integer}]` to implement `Index<&usize>`
= note: 1 redundant requirement hidden
= note: required for `[{integer}; 3]` to implement `Index<&usize>`
help: dereference this index
|
LL | let one_item_please: i32 = [1, 2, 3][*i];
| +
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.