$ errwrap -fix main.go
main.go:14:9: call could wrap the error with error-wrapping directive %w

diff --git a/main.go b/main.go
index 41d1c42..6cb42b8 100644
--- a/main.go
+++ b/main.go
@@ -11,5 +11,5 @@ func main() {

 func foo() error {
        err := errors.New("bar!")
-       return fmt.Errorf("failed for %s with error: %s", "foo", err)
+       return fmt.Errorf("failed for %s with error: %w", "foo", err)
 }