1 error: expected identifier, found keyword `return`
2 --> $DIR/issue-15980.rs:8:13
4 LL | Err(ref e) if e.kind == io::EndOfFile {
5 | ------------- while parsing this struct
8 | ^^^^^^ expected identifier, found keyword
10 help: you can escape reserved keywords to use them as identifiers
15 error: expected one of `.`, `=>`, `?`, or an operator, found reserved identifier `_`
16 --> $DIR/issue-15980.rs:13:9
19 | - expected one of `.`, `=>`, `?`, or an operator
24 error: aborting due to 2 previous errors