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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.
81 lines
3.6 KiB
Plaintext
81 lines
3.6 KiB
Plaintext
error: future cannot be sent between threads safely
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--> $DIR/issue-68112.rs:34:5
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LL | require_send(send_fut);
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| ^^^^^^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
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= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{async block@$DIR/issue-68112.rs:29:20: 33:6}: Send`
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= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
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note: future is not `Send` as it awaits another future which is not `Send`
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--> $DIR/issue-68112.rs:31:17
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LL | let _ = non_send_fut.await;
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| ^^^^^^^^^^^^ await occurs here on type `impl Future<Output = Arc<RefCell<i32>>>`, which is not `Send`
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note: required by a bound in `require_send`
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--> $DIR/issue-68112.rs:11:25
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LL | fn require_send(_: impl Send) {}
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| ^^^^ required by this bound in `require_send`
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error: future cannot be sent between threads safely
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--> $DIR/issue-68112.rs:43:5
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LL | require_send(send_fut);
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| ^^^^^^^^^^^^^^^^^^^^^^ future created by async block is not `Send`
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= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{async block@$DIR/issue-68112.rs:39:20: 42:6}: Send`
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= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
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note: future is not `Send` as it awaits another future which is not `Send`
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--> $DIR/issue-68112.rs:40:17
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LL | let _ = make_non_send_future1().await;
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| ^^^^^^^^^^^^^^^^^^^^^^^ await occurs here on type `impl Future<Output = Arc<RefCell<i32>>>`, which is not `Send`
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note: required by a bound in `require_send`
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--> $DIR/issue-68112.rs:11:25
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LL | fn require_send(_: impl Send) {}
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| ^^^^ required by this bound in `require_send`
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error[E0277]: `RefCell<i32>` cannot be shared between threads safely
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--> $DIR/issue-68112.rs:62:5
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LL | require_send(send_fut);
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| ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
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= help: the trait `Sync` is not implemented for `RefCell<i32>`, which is required by `{async block@$DIR/issue-68112.rs:57:20: 61:6}: Send`
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= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
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= note: required for `Arc<RefCell<i32>>` to implement `Send`
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note: required because it's used within this `async` fn body
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--> $DIR/issue-68112.rs:47:31
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LL | async fn ready2<T>(t: T) -> T {
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| _______________________________^
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LL | | t
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LL | | }
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| |_^
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note: required because it appears within the type `impl Future<Output = Arc<RefCell<i32>>>`
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--> $DIR/issue-68112.rs:50:31
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LL | fn make_non_send_future2() -> impl Future<Output = Arc<RefCell<i32>>> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: required because it captures the following types: `impl Future<Output = Arc<RefCell<i32>>>`, `Ready<i32>`
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note: required because it's used within this `async` block
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--> $DIR/issue-68112.rs:57:20
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LL | let send_fut = async {
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| ____________________^
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LL | | let non_send_fut = make_non_send_future2();
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LL | | let _ = non_send_fut.await;
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LL | | ready(0).await;
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LL | | };
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| |_____^
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note: required by a bound in `require_send`
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--> $DIR/issue-68112.rs:11:25
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LL | fn require_send(_: impl Send) {}
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| ^^^^ required by this bound in `require_send`
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0277`.
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