error[E0277]: the trait bound `User: AuthUser` is not satisfied
  --> $DIR/dropck-only-error-async.rs:28:5
   |
LL |     auth: AuthSession<User::AuthnBackend>,
   |     ^^^^ the trait `AuthUser` is not implemented for `User`

error[E0277]: the trait bound `User: AuthUser` is not satisfied
  --> $DIR/dropck-only-error-async.rs:28:5
   |
LL |     auth: AuthSession<User::AuthnBackend>,
   |     ^^^^ the trait `AuthUser` is not implemented for `User`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0277`.