diff options
Diffstat (limited to 'tests/ui/async-await/in-trait/warn.stderr')
| -rw-r--r-- | tests/ui/async-await/in-trait/warn.stderr | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/async-await/in-trait/warn.stderr b/tests/ui/async-await/in-trait/warn.stderr new file mode 100644 index 000000000..d0278628c --- /dev/null +++ b/tests/ui/async-await/in-trait/warn.stderr @@ -0,0 +1,20 @@ +error: use of `async fn` in public traits is discouraged as auto trait bounds cannot be specified + --> $DIR/warn.rs:6:5 + | +LL | async fn not_send(); + | ^^^^^ + | + = note: you can suppress this lint if you plan to use the trait only in your own code, or do not care about auto traits like `Send` on the `Future` +note: the lint level is defined here + --> $DIR/warn.rs:3:9 + | +LL | #![deny(async_fn_in_trait)] + | ^^^^^^^^^^^^^^^^^ +help: you can alternatively desugar to a normal `fn` that returns `impl Future` and add any desired bounds such as `Send`, but these cannot be relaxed without a breaking API change + | +LL - async fn not_send(); +LL + fn not_send() -> impl std::future::Future<Output = ()> + Send; + | + +error: aborting due to previous error + |