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Original file line number | Diff line number | Diff line change |
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@@ -1,15 +1,27 @@ | ||
error[E0277]: the trait bound `(): std::future::Future` is not satisfied | ||
--> $DIR/async-error-span.rs:7:20 | ||
| | ||
LL | fn get_future() -> impl Future<Output = ()> { | ||
| ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::future::Future` is not implemented for `()` | ||
LL | | ||
LL | panic!() | ||
| -------- this returned value is of type `!` | ||
| | ||
= note: the return type of a function must have a statically known size | ||
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error[E0698]: type inside `async fn` body must be known in this context | ||
--> $DIR/async-error-span.rs:12:9 | ||
--> $DIR/async-error-span.rs:13:9 | ||
| | ||
LL | let a; | ||
| ^ cannot infer type | ||
| | ||
note: the type is part of the `async fn` body because of this `await` | ||
--> $DIR/async-error-span.rs:13:5 | ||
--> $DIR/async-error-span.rs:14:5 | ||
| | ||
LL | get_future().await; | ||
| ^^^^^^^^^^^^^^^^^^ | ||
|
||
error: aborting due to previous error | ||
error: aborting due to 2 previous errors | ||
|
||
For more information about this error, try `rustc --explain E0698`. | ||
Some errors have detailed explanations: E0277, E0698. | ||
For more information about an error, try `rustc --explain E0277`. |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,20 @@ | ||
// edition:2018 | ||
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trait From { | ||
fn from(); | ||
} | ||
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impl From for () { | ||
fn from() {} | ||
} | ||
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impl From for () { | ||
//~^ ERROR conflicting implementations of trait | ||
fn from() {} | ||
} | ||
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fn bar() -> impl core::future::Future<Output = ()> { | ||
async move { From::from() } | ||
} | ||
|
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fn main() {} |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,12 @@ | ||
error[E0119]: conflicting implementations of trait `From` for type `()`: | ||
--> $DIR/issue-67651.rs:11:1 | ||
| | ||
LL | impl From for () { | ||
| ---------------- first implementation here | ||
... | ||
LL | impl From for () { | ||
| ^^^^^^^^^^^^^^^^ conflicting implementation for `()` | ||
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error: aborting due to previous error | ||
|
||
For more information about this error, try `rustc --explain E0119`. |
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