error: expected `::`, found `(` --> $DIR/type-ascription-instead-of-path-2.rs:3:63 | LL | let _ = vec![Ok(2)].into_iter().collect:,_>>()?; | - ^ expected `::` | | | help: maybe write a path separator here: `::` | = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `: ` error: aborting due to previous error