mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
9b3fcf9ad4
When encountering
```rust
struct Foo;
struct Bar;
impl From<Bar> for Foo {
fn from(_: Bar) -> Self { Foo }
}
fn qux(_: impl From<Bar>) {}
fn main() {
qux(Bar.into());
}
```
Suggest removing `.into()`:
```
error[E0283]: type annotations needed
--> f100.rs:8:13
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8 | qux(Bar.into());
| --- ^^^^
| |
| required by a bound introduced by this call
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= note: cannot satisfy `_: From<Bar>`
note: required by a bound in `qux`
--> f100.rs:6:16
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6 | fn qux(_: impl From<Bar>) {}
| ^^^^^^^^^ required by this bound in `qux`
help: try using a fully qualified path to specify the expected types
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8 | qux(<Bar as Into<T>>::into(Bar));
| +++++++++++++++++++++++ ~
help: consider removing this method call, as the receiver has type `Bar` and `Bar: From<Bar>` can be fulfilled
|
8 - qux(Bar.into());
8 + qux(Bar);
|
```
Fix #71252
22 lines
840 B
Text
22 lines
840 B
Text
error[E0277]: the trait bound `String: Copy` is not satisfied
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--> $DIR/error-should-say-copy-not-pod.rs:6:17
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LL | check_bound("nocopy".to_string());
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| ----------- ^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String`
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| required by a bound introduced by this call
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note: required by a bound in `check_bound`
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--> $DIR/error-should-say-copy-not-pod.rs:3:18
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LL | fn check_bound<T:Copy>(_: T) {}
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| ^^^^ required by this bound in `check_bound`
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help: consider removing this method call, as the receiver has type `&'static str` and `&'static str: Copy` trivially holds
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LL - check_bound("nocopy".to_string());
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LL + check_bound("nocopy");
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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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