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6efddac288
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
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
40 lines
1.8 KiB
Plaintext
40 lines
1.8 KiB
Plaintext
error[E0277]: `&'a T` is not an iterator
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--> $DIR/hir-wf-check-erase-regions.rs:7:21
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LL | type IntoIter = std::iter::Flatten<std::slice::Iter<'a, T>>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&'a T` is not an iterator
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= help: the trait `Iterator` is not implemented for `&'a T`, which is required by `Flatten<std::slice::Iter<'a, T>>: Iterator`
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= help: the trait `Iterator` is implemented for `&mut I`
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= note: required for `Flatten<std::slice::Iter<'a, T>>` to implement `Iterator`
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note: required by a bound in `std::iter::IntoIterator::IntoIter`
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--> $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
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error[E0277]: `&'a T` is not an iterator
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--> $DIR/hir-wf-check-erase-regions.rs:7:21
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LL | type IntoIter = std::iter::Flatten<std::slice::Iter<'a, T>>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `&'a T` is not an iterator
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= help: the trait `Iterator` is not implemented for `&'a T`, which is required by `&'a T: IntoIterator`
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= help: the trait `Iterator` is implemented for `&mut I`
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= note: required for `&'a T` to implement `IntoIterator`
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note: required by a bound in `Flatten`
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--> $SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL
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error[E0277]: `&'a T` is not an iterator
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--> $DIR/hir-wf-check-erase-regions.rs:11:27
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LL | fn into_iter(self) -> Self::IntoIter {
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| ^^^^^^^^^^^^^^ `&'a T` is not an iterator
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= help: the trait `Iterator` is not implemented for `&'a T`, which is required by `&'a T: IntoIterator`
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= help: the trait `Iterator` is implemented for `&mut I`
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= note: required for `&'a T` to implement `IntoIterator`
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note: required by a bound in `Flatten`
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--> $SRC_DIR/core/src/iter/adapters/flatten.rs:LL:COL
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0277`.
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