error: expected one of `(`, `,`, `=`, `{`, or `}`, found `:` --> $DIR/issue-103869.rs:2:8 | LL | vec: Vec, | ^ expected one of `(`, `,`, `=`, `{`, or `}` | = help: enum variants can be `Variant`, `Variant = `, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }` error: expected item, found `:` --> $DIR/issue-103869.rs:2:8 | LL | vec: Vec, | ^ expected item error: aborting due to 2 previous errors