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.
21 lines
741 B
Plaintext
21 lines
741 B
Plaintext
error[E0277]: the trait bound `Foo: Clone` is not satisfied
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--> $DIR/issue-71136.rs:5:5
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LL | #[derive(Clone)]
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| ----- in this derive macro expansion
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LL | struct FooHolster {
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LL | the_foos: Vec<Foo>,
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| ^^^^^^^^^^^^^^^^^^ the trait `Clone` is not implemented for `Foo`, which is required by `Vec<Foo>: Clone`
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= note: required for `Vec<Foo>` to implement `Clone`
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= note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider annotating `Foo` with `#[derive(Clone)]`
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LL + #[derive(Clone)]
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LL | struct Foo(u8);
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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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