| error: generator cannot be sent between threads safely |
| --> $DIR/generator-print-verbose-1.rs:40:5 |
| | |
| LL | require_send(send_gen); |
| | ^^^^^^^^^^^^ generator 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: generator is not `Send` as this value is used across a yield |
| --> $DIR/generator-print-verbose-1.rs:38:9 |
| | |
| LL | let _non_send_gen = make_non_send_generator(); |
| | ------------- has type `Opaque(DefId(0:34 ~ generator_print_verbose_1[7d1d]::make_non_send_generator::{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/generator-print-verbose-1.rs:29:25 |
| | |
| LL | fn require_send(_: impl Send) {} |
| | ^^^^ required by this bound in `require_send` |
| |
| error[E0277]: `RefCell<i32>` cannot be shared between threads safely |
| --> $DIR/generator-print-verbose-1.rs:59:5 |
| | |
| 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 generator |
| --> $DIR/generator-print-verbose-1.rs:45:5 |
| | |
| LL | || { |
| | ^^ |
| note: required because it appears within the type `Opaque(DefId(0:35 ~ generator_print_verbose_1[7d1d]::make_gen2::{opaque#0}), [Arc<RefCell<i32>>])` |
| --> $DIR/generator-print-verbose-1.rs:44:30 |
| | |
| LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| note: required because it appears within the type `Opaque(DefId(0:36 ~ generator_print_verbose_1[7d1d]::make_non_send_generator2::{opaque#0}), [])` |
| --> $DIR/generator-print-verbose-1.rs:50:34 |
| | |
| LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> { |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| = note: required because it captures the following types: `Opaque(DefId(0:36 ~ generator_print_verbose_1[7d1d]::make_non_send_generator2::{opaque#0}), [])` |
| note: required because it's used within this generator |
| --> $DIR/generator-print-verbose-1.rs:55:20 |
| | |
| LL | let send_gen = || { |
| | ^^ |
| note: required by a bound in `require_send` |
| --> $DIR/generator-print-verbose-1.rs:29:25 |
| | |
| 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`. |