error[E0277]: the trait bound `T: From<bool>` is not satisfied
  --> tests/failure/enum-multiple-unnamed.rs:11:24
   |
11 |     let _: T = T::from(true);
   |                ------- ^^^^ the trait `From<bool>` is not implemented for `T`
   |                |
   |                required by a bound introduced by this call
   |
   = help: the trait `From<&'static str>` is implemented for `T`