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generator-print-verbose-1.stderr
40 lines (37 loc) · 2.25 KB
/
generator-print-verbose-1.stderr
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error: generator cannot be sent between threads safely
--> $DIR/generator-print-verbose-1.rs:37:5
|
LL | fn require_send(_: impl Send) {}
| ---- required by this bound in `require_send`
...
LL | require_send(send_gen);
| ^^^^^^^^^^^^ generator is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
note: generator is not `Send` as this value is used across a yield
--> $DIR/generator-print-verbose-1.rs:35:9
|
LL | let _non_send_gen = make_non_send_generator();
| ------------- has type `Opaque(DefId(0:34 ~ generator_print_verbose_1[317d]::make_non_send_generator::{opaque#0}), [])` which is not `Send`
LL | yield;
| ^^^^^ yield occurs here, with `_non_send_gen` maybe used later
LL | };
| - `_non_send_gen` is later dropped here
error[E0277]: `RefCell<i32>` cannot be shared between threads safely
--> $DIR/generator-print-verbose-1.rs:56:5
|
LL | fn require_send(_: impl Send) {}
| ---- required by this bound in `require_send`
...
LL | require_send(send_gen);
| ^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
= note: required because of the requirements on the impl of `Send` for `Arc<RefCell<i32>>`
= note: required because it appears within the type `[make_gen2<Arc<RefCell<i32>>>::{closure#0} upvar_tys=(Arc<RefCell<i32>>) {()}]`
= note: required because it appears within the type `Opaque(DefId(0:39 ~ generator_print_verbose_1[317d]::make_gen2::{opaque#0}), [std::sync::Arc<std::cell::RefCell<i32>>])`
= note: required because it appears within the type `Opaque(DefId(0:42 ~ generator_print_verbose_1[317d]::make_non_send_generator2::{opaque#0}), [])`
= note: required because it appears within the type `{Opaque(DefId(0:42 ~ generator_print_verbose_1[317d]::make_non_send_generator2::{opaque#0}), []), ()}`
= note: required because it appears within the type `[test2::{closure#0} upvar_tys=() {Opaque(DefId(0:42 ~ generator_print_verbose_1[317d]::make_non_send_generator2::{opaque#0}), []), ()}]`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.