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5b54286640
Remove the "which is required by `{root_obligation}`" post-script in
"the trait `X` is not implemented for `Y`" explanation in E0277. This
information is already conveyed in the notes explaining requirements,
making it redundant while making the text (particularly in labels)
harder to read.
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
vs the prior
```
error[E0277]: the trait bound `NotCopy: Copy` is not satisfied
--> $DIR/wf-static-type.rs:10:13
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LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option<NotCopy>: Copy`
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= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
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LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
20 lines
774 B
Plaintext
20 lines
774 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>>`
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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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