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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.
20 lines
806 B
Plaintext
20 lines
806 B
Plaintext
error[E0277]: `Rc<RefCell<A>>` cannot be sent between threads safely
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--> $DIR/issue-7013.rs:24:19
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LL | let a = A {v: Box::new(B{v: None}) as Box<dyn Foo + Send>};
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| ^^^^^^^^^^^^^^^^^^^^ `Rc<RefCell<A>>` cannot be sent between threads safely
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= help: within `B`, the trait `Send` is not implemented for `Rc<RefCell<A>>`, which is required by `B: Send`
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note: required because it appears within the type `Option<Rc<RefCell<A>>>`
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--> $SRC_DIR/core/src/option.rs:LL:COL
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note: required because it appears within the type `B`
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--> $DIR/issue-7013.rs:8:8
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LL | struct B {
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| ^
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= note: required for the cast from `Box<B>` to `Box<dyn Foo + Send>`
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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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