Deserialize a Vec of values into a struct by implementing serde `Deserializer`

Question

I have a data format using custom enum of values. From the database I receive a Vec<MyVal>. I want to convert this to a struct (and fail if it doesn't work). I want to use serde because after processing I want to return the API response as a json, and serde makes this super easy.

Playground link for the example

enum MyVal {
  Bool(bool),
  Text(String)
}

#[derive(Serialize, Deserialize)]
struct User {
  name: String,
  registered: bool
}

The challenge is with converting the data format into the serde data model. For this I can implement a Deserializer and implement the visit_seq method i.e. visit the Vec<MyVal> as if it were a sequence and return the values one by one. The visitor for User can consume the visited values to build the struct User.

However I'm not able to figure out how to convert the Vec into something visitor_seq can consume. Here's some sample code.

struct MyWrapper(Vec<MyVal>);

impl<'de> Deserializer<'de> for MyWrapper {
    type Error = de::value::Error;

    // skip unncessary

    fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
    where
        V: serde::de::Visitor<'de>,
    {
        let convert_myval = move |myval: &MyVal| match myval {
            MyVal::Bool(b) => visitor.visit_bool(*b),
            MyVal::Text(s) => visitor.visit_string(s.clone())
        };

        // now I have a vec of serde values
        let rec_vec: Vec<Result<V::Value, Self::Error>> =
            self.0.iter().map(|myval| convert_myval(myval)).collect();
        // giving error!!
        visitor.visit_seq(rec_vec.into_iter())
    }
}

The error is

92   |         visitor.visit_seq(rec_vec.into_iter())
     |                 --------- ^^^^^^^^^^^^^^^^^^^ the trait `SeqAccess<'de>` is not implemented for `std::vec::IntoIter<Result<<V as Visitor<'de>>::Value, _::_serde::de::value::Error>>`
     |                 |
     |                 required by a bound introduced by this call

So I looked into SeqAccess and it has an implementor that requires that whatever is passed to it implement the Iterator trait. But I thought I had that covered, because vec.into_iter returns an IntoIter, a consuming iterator which does implement the Iterator trait.

So I'm completely lost as to what's going wrong here. Surely there must be a way to visit a Vec<Result<Value, Error>> as a seq?