In match &job { Job { owner, .. } => ... }, where owner is a String field, what is the us…

In match &job { Job { owner, .. } => ... }, where owner is a String field, what is the usual binding type?

1. &String, because the subject is shared-borrowed
2. String, moved out of job
3. &mut String, because patterns are mutable
4. str, copied out of the allocation