| 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(0:34 ~ 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:42:5 |
| | |
| LL | || { |
| | ^^ |
| note: required because it appears within the type `Opaque(DefId(0:35 ~ 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(0:36 ~ 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 captures the following types: `Opaque(DefId(0:36 ~ coroutine_print_verbose_1[75fb]::make_non_send_coroutine2::{opaque#0}), [])` |
| note: required because it's used within this coroutine |
| --> $DIR/coroutine-print-verbose-1.rs:52:20 |
| | |
| LL | let send_gen = || { |
| | ^^ |
| 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`. |