rust/tests/ui/traits/bound/assoc-fn-bound-root-obligation.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
734 B
Plaintext

error[E0277]: expected a `FnMut(char)` closure, found `u8`
--> $DIR/assoc-fn-bound-root-obligation.rs:2:7
|
LL | s.strip_suffix(b'\n').unwrap_or(s)
| ^^^^^^^^^^^^ expected an `FnMut(char)` closure, found `u8`
|
= help: the trait `FnMut<(char,)>` is not implemented for `u8`, which is required by `u8: Pattern<'_>`
= help: the following other types implement trait `Pattern<'a>`:
char
[char; N]
&'b String
&'b [char; N]
&'b [char]
&'c &'b str
&'b str
= note: required for `u8` to implement `Pattern<'_>`
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.