LL | Box::new(build(y.to_string()))
| ^^^^^^^^^^^^^ help: use: `y`
-error: aborting due to 78 previous errors
+error: unnecessary use of `to_string`
+ --> $DIR/unnecessary_to_owned.rs:381:12
+ |
+LL | id("abc".to_string())
+ | ^^^^^^^^^^^^^^^^^ help: use: `"abc"`
+
+error: aborting due to 79 previous errors