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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`
```
75 lines
3.1 KiB
Plaintext
75 lines
3.1 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>`
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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>`
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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>`
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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'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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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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