error: Confirm only support bool or Option<bool> type
 --> tests/fail/confirm.rs:8:14
  |
8 |     student: Option<String>,
  |              ^^^^^^^^^^^^^^

error[E0599]: no function or associated item named `asker` found for struct `User` in the current scope
  --> tests/fail/confirm.rs:12:22
   |
5  | struct User {
   | ----------- function or associated item `asker` not found for this struct
...
12 |     let user = User::asker().boy("你是男孩吗？").student().finish();
   |                      ^^^^^ function or associated item not found in `User`