error: rename must be a string not `1`
 --> tests/builder/rename_non_string.rs:5:15
  |
5 |     #[builder(rename = 1)]
  |               ^^^^^^^^^^

error[E0599]: no method named `value` found for struct `Example` in the current scope
  --> tests/builder/rename_non_string.rs:10:33
   |
4  | struct Example {
   | -------------- method `value` not found for this struct
...
10 |     let ex = Example::default().value("val");
   |                                 ^^^^^ method not found in `Example`