1 error: expected one of `:`, `@`, or `|`, found `)`
2 --> $DIR/omitted-arg-in-item-fn.rs:1:9
5 | ^ expected one of `:`, `@`, or `|`
7 = note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
8 help: if this is a `self` type, give it a parameter name
10 LL | fn foo(self: x) {
12 help: if this is a parameter name, give it a type
14 LL | fn foo(x: TypeName) {
16 help: if this is a type, explicitly ignore the parameter name
21 error: aborting due to previous error