1 error: return types are denoted using `->`
2 --> $DIR/fn-recover-return-sign2.rs:4:10
4 LL | fn foo() => impl Fn() => bool {
5 | ^^ help: use `->` instead
7 error: expected one of `+`, `->`, `::`, `where`, or `{`, found `=>`
8 --> $DIR/fn-recover-return-sign2.rs:4:23
10 LL | fn foo() => impl Fn() => bool {
11 | ^^ expected one of `+`, `->`, `::`, `where`, or `{`
13 error: aborting due to 2 previous errors