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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 18:31:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 18:31:44 +0000
commitc23a457e72abe608715ac76f076f47dc42af07a5 (patch)
tree2772049aaf84b5c9d0ed12ec8d86812f7a7904b6 /tests/ui/async-await/in-trait/send-on-async-fn-in-trait.stderr
parentReleasing progress-linux version 1.73.0+dfsg1-1~progress7.99u1. (diff)
downloadrustc-c23a457e72abe608715ac76f076f47dc42af07a5.tar.xz
rustc-c23a457e72abe608715ac76f076f47dc42af07a5.zip
Merging upstream version 1.74.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+error[E0277]: `impl Future<Output = ()>` cannot be sent between threads safely
+ --> $DIR/send-on-async-fn-in-trait.rs:14:16
+ |
+LL | needs_send(T::test());
+ | ---------- ^^^^^^^^^ `impl Future<Output = ()>` cannot be sent between threads safely
+ | |
+ | required by a bound introduced by this call
+ |
+ = help: the trait `Send` is not implemented for `impl Future<Output = ()>`
+note: required by a bound in `needs_send`
+ --> $DIR/send-on-async-fn-in-trait.rs:13:27
+ |
+LL | fn needs_send(_: impl Send) {}
+ | ^^^^ required by this bound in `needs_send`
+help: `Send` can be made part of the associated future's guarantees for all implementations of `Foo::test`
+ |
+LL - async fn test() -> () {}
+LL + fn test() -> impl std::future::Future<Output = ()> + Send { async {} }
+ |
+
+error[E0277]: `impl Future<Output = i32>` cannot be sent between threads safely
+ --> $DIR/send-on-async-fn-in-trait.rs:16:16
+ |
+LL | needs_send(T::test2());
+ | ---------- ^^^^^^^^^^ `impl Future<Output = i32>` cannot be sent between threads safely
+ | |
+ | required by a bound introduced by this call
+ |
+ = help: the trait `Send` is not implemented for `impl Future<Output = i32>`
+note: required by a bound in `needs_send`
+ --> $DIR/send-on-async-fn-in-trait.rs:13:27
+ |
+LL | fn needs_send(_: impl Send) {}
+ | ^^^^ required by this bound in `needs_send`
+help: `Send` can be made part of the associated future's guarantees for all implementations of `Foo::test2`
+ |
+LL - async fn test2() -> i32 { 1 + 2 }
+LL + fn test2() -> impl std::future::Future<Output = i32> + Send {async { 1 + 2 } }
+ |
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.