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.
19 lines
833 B
Plaintext
19 lines
833 B
Plaintext
error[E0277]: `NotDebug` doesn't implement `Debug`
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--> $DIR/dbg-macro-requires-debug.rs:6:23
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LL | let _: NotDebug = dbg!(NotDebug);
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| ^^^^^^^^^^^^^^ `NotDebug` cannot be formatted using `{:?}`
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= help: the trait `Debug` is not implemented for `NotDebug`, which is required by `&NotDebug: Debug`
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= note: add `#[derive(Debug)]` to `NotDebug` or manually `impl Debug for NotDebug`
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= note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
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help: consider annotating `NotDebug` with `#[derive(Debug)]`
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LL + #[derive(Debug)]
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LL | struct NotDebug;
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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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