rust/tests/ui/object-safety/issue-102762.stderr
2023-01-11 09:32:08 +00:00

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error[E0038]: the trait `Fetcher` cannot be made into an object
--> $DIR/issue-102762.rs:18:21
|
LL | fn get<'a>(self: &'a Box<Self>) -> Pin<Box<dyn Future<Output = Vec<u8>> + 'a>>
| ------------- help: consider changing method `get`'s `self` parameter to be `&self`: `&Self`
...
LL | fn fetcher() -> Box<dyn Fetcher> {
| ^^^^^^^^^^^ `Fetcher` cannot be made into an object
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
--> $DIR/issue-102762.rs:10:22
|
LL | pub trait Fetcher: Send + Sync {
| ------- this trait cannot be made into an object...
LL | fn get<'a>(self: &'a Box<Self>) -> Pin<Box<dyn Future<Output = Vec<u8>> + 'a>>
| ^^^^^^^^^^^^^ ...because method `get`'s `self` parameter cannot be dispatched on
error: aborting due to previous error
For more information about this error, try `rustc --explain E0038`.