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
|
LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`
|
= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
|
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
|
LL | static FOO: IsCopy<Option<NotCopy>> = IsCopy { t: None };
| ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `NotCopy`, which is required by `Option<NotCopy>: Copy`
|
= note: required for `Option<NotCopy>` to implement `Copy`
note: required by a bound in `IsCopy`
--> $DIR/wf-static-type.rs:7:17
|
LL | struct IsCopy<T:Copy> { t: T }
| ^^^^ required by this bound in `IsCopy`
```
60 lines
2.8 KiB
Plaintext
60 lines
2.8 KiB
Plaintext
error: coroutine cannot be sent between threads safely
|
|
--> $DIR/coroutine-print-verbose-1.rs:37:5
|
|
|
|
|
LL | require_send(send_gen);
|
|
| ^^^^^^^^^^^^^^^^^^^^^^ coroutine is not `Send`
|
|
|
|
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
|
|
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
|
|
note: coroutine is not `Send` as this value is used across a yield
|
|
--> $DIR/coroutine-print-verbose-1.rs:35:9
|
|
|
|
|
LL | let _non_send_gen = make_non_send_coroutine();
|
|
| ------------- has type `Opaque(DefId(0:24 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine::{opaque#0}), [])` which is not `Send`
|
|
LL | yield;
|
|
| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
|
|
note: required by a bound in `require_send`
|
|
--> $DIR/coroutine-print-verbose-1.rs:26:25
|
|
|
|
|
LL | fn require_send(_: impl Send) {}
|
|
| ^^^^ required by this bound in `require_send`
|
|
|
|
error[E0277]: `RefCell<i32>` cannot be shared between threads safely
|
|
--> $DIR/coroutine-print-verbose-1.rs:56:5
|
|
|
|
|
LL | require_send(send_gen);
|
|
| ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
|
|
|
|
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
|
|
= note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
|
|
= note: required for `Arc<RefCell<i32>>` to implement `Send`
|
|
note: required because it's used within this coroutine
|
|
--> $DIR/coroutine-print-verbose-1.rs:42:18
|
|
|
|
|
LL | #[coroutine] || {
|
|
| ^^
|
|
note: required because it appears within the type `Opaque(DefId(0:29 ~ coroutine_print_verbose_1[75fb]::make_gen2::{opaque#0}), [Arc<RefCell<i32>>])`
|
|
--> $DIR/coroutine-print-verbose-1.rs:41:30
|
|
|
|
|
LL | pub fn make_gen2<T>(t: T) -> impl Coroutine<Return = T> {
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
note: required because it appears within the type `Opaque(DefId(0:32 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine2::{opaque#0}), [])`
|
|
--> $DIR/coroutine-print-verbose-1.rs:47:34
|
|
|
|
|
LL | fn make_non_send_coroutine2() -> impl Coroutine<Return = Arc<RefCell<i32>>> {
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
note: required because it's used within this coroutine
|
|
--> $DIR/coroutine-print-verbose-1.rs:52:33
|
|
|
|
|
LL | let send_gen = #[coroutine] || {
|
|
| ^^
|
|
note: required by a bound in `require_send`
|
|
--> $DIR/coroutine-print-verbose-1.rs:26:25
|
|
|
|
|
LL | fn require_send(_: impl Send) {}
|
|
| ^^^^ required by this bound in `require_send`
|
|
|
|
error: aborting due to 2 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|