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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.
25 lines
962 B
Plaintext
25 lines
962 B
Plaintext
error[E0277]: the trait bound `T: Clone` is not satisfied
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--> $DIR/derive-clone-for-eq.rs:4:17
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LL | #[derive(Clone, Eq)]
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| ^^ the trait `Clone` is not implemented for `T`, which is required by `Struct<T>: PartialEq`
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note: required for `Struct<T>` to implement `PartialEq`
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--> $DIR/derive-clone-for-eq.rs:7:19
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LL | impl<T: Clone, U> PartialEq<U> for Struct<T>
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| ----- ^^^^^^^^^^^^ ^^^^^^^^^
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| unsatisfied trait bound introduced here
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note: required by a bound in `Eq`
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--> $SRC_DIR/core/src/cmp.rs:LL:COL
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= note: this error originates in the derive macro `Eq` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider restricting type parameter `T`
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LL | pub struct Struct<T: std::clone::Clone>(T);
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| +++++++++++++++++++
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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