rust/tests/ui/no-send-res-ports.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

38 lines
1.3 KiB
Plaintext

error[E0277]: `Rc<()>` cannot be sent between threads safely
--> $DIR/no-send-res-ports.rs:25:19
|
LL | thread::spawn(move|| {
| ------------- ^-----
| | |
| _____|_____________within this `{closure@$DIR/no-send-res-ports.rs:25:19: 25:25}`
| | |
| | required by a bound introduced by this call
LL | |
LL | | let y = x;
LL | | println!("{:?}", y);
LL | | });
| |_____^ `Rc<()>` cannot be sent between threads safely
|
= help: within `{closure@$DIR/no-send-res-ports.rs:25:19: 25:25}`, the trait `Send` is not implemented for `Rc<()>`, which is required by `{closure@$DIR/no-send-res-ports.rs:25:19: 25:25}: Send`
note: required because it appears within the type `Port<()>`
--> $DIR/no-send-res-ports.rs:5:8
|
LL | struct Port<T>(Rc<T>);
| ^^^^
note: required because it appears within the type `Foo`
--> $DIR/no-send-res-ports.rs:9:12
|
LL | struct Foo {
| ^^^
note: required because it's used within this closure
--> $DIR/no-send-res-ports.rs:25:19
|
LL | thread::spawn(move|| {
| ^^^^^^
note: required by a bound in `spawn`
--> $SRC_DIR/std/src/thread/mod.rs:LL:COL
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.