/
async-fn-nonsend.stderr
66 lines (62 loc) · 2.47 KB
/
async-fn-nonsend.stderr
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error: future cannot be sent between threads safely
--> $DIR/async-fn-nonsend.rs:50:5
|
LL | fn assert_send(_: impl Send) {}
| ----------- ---- required by this bound in `assert_send`
...
LL | assert_send(local_dropped_before_await());
| ^^^^^^^^^^^ future returned by `local_dropped_before_await` is not `Send`
|
= help: within `impl std::future::Future`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
note: future is not `Send` as this value is used across an await
--> $DIR/async-fn-nonsend.rs:25:5
|
LL | let x = non_send();
| - has type `impl std::fmt::Debug`
LL | drop(x);
LL | fut().await;
| ^^^^^^^^^^^ await occurs here, with `x` maybe used later
LL | }
| - `x` is later dropped here
error: future cannot be sent between threads safely
--> $DIR/async-fn-nonsend.rs:52:5
|
LL | fn assert_send(_: impl Send) {}
| ----------- ---- required by this bound in `assert_send`
...
LL | assert_send(non_send_temporary_in_match());
| ^^^^^^^^^^^ future returned by `non_send_temporary_in_match` is not `Send`
|
= help: within `impl std::future::Future`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
note: future is not `Send` as this value is used across an await
--> $DIR/async-fn-nonsend.rs:34:20
|
LL | match Some(non_send()) {
| ---------- has type `impl std::fmt::Debug`
LL | Some(_) => fut().await,
| ^^^^^^^^^^^ await occurs here, with `non_send()` maybe used later
...
LL | }
| - `non_send()` is later dropped here
error: future cannot be sent between threads safely
--> $DIR/async-fn-nonsend.rs:54:5
|
LL | fn assert_send(_: impl Send) {}
| ----------- ---- required by this bound in `assert_send`
...
LL | assert_send(non_sync_with_method_call());
| ^^^^^^^^^^^ future returned by `non_sync_with_method_call` is not `Send`
|
= help: the trait `std::marker::Send` is not implemented for `dyn std::fmt::Write`
note: future is not `Send` as this value is used across an await
--> $DIR/async-fn-nonsend.rs:43:9
|
LL | let f: &mut std::fmt::Formatter = panic!();
| - has type `&mut std::fmt::Formatter<'_>`
LL | if non_sync().fmt(f).unwrap() == () {
LL | fut().await;
| ^^^^^^^^^^^ await occurs here, with `f` maybe used later
LL | }
LL | }
| - `f` is later dropped here
error: aborting due to 3 previous errors