rust/tests/ui/impl-trait/in-trait/signature-mismatch.stderr

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error: return type captures more lifetimes than trait definition
--> $DIR/signature-mismatch.rs:34:47
|
LL | fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a {
| -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: hidden type must only reference lifetimes captured by this impl trait
--> $DIR/signature-mismatch.rs:15:40
|
LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a`
error: return type captures more lifetimes than trait definition
--> $DIR/signature-mismatch.rs:39:57
|
LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a {
| -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: hidden type must only reference lifetimes captured by this impl trait
--> $DIR/signature-mismatch.rs:16:57
|
LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a`
error: return type captures more lifetimes than trait definition
--> $DIR/signature-mismatch.rs:47:10
|
LL | fn async_fn_multiple<'a, 'b>(
| -- this lifetime was captured
...
LL | ) -> impl Future<Output = Vec<u8>> + Captures2<'a, 'b> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: hidden type must only reference lifetimes captured by this impl trait
--> $DIR/signature-mismatch.rs:18:12
|
LL | -> impl Future<Output = Vec<u8>> + Captures<'a>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: hidden type inferred to be `impl Future<Output = Vec<u8>> + Captures2<'a, 'b>`
error[E0309]: the parameter type `T` may not live long enough
--> $DIR/signature-mismatch.rs:56:10
|
LL | ) -> impl Future<Output = Vec<u8>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...so that the type `impl Future<Output = Vec<u8>>` will meet its required lifetime bounds...
|
note: ...that is required by this bound
--> $DIR/signature-mismatch.rs:23:42
|
LL | ) -> impl Future<Output = Vec<u8>> + 'a;
| ^^
help: consider adding an explicit lifetime bound...
|
LL | fn async_fn_reduce_outlive<'a, 'b, T: 'a>(
| ++++
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0309`.