error[E0282]: type annotations needed --> $DIR/cannot-infer-partial-try-return.rs:20:9 | LL | Ok(()) | ^^ cannot infer type of the type parameter `E` declared on the enum `Result` | help: consider specifying the generic arguments | LL | Ok::<(), QualifiedError<_>>(()) | +++++++++++++++++++++++++ error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0282`.