Code shared from the Rust Playground

playground.rs

use std::marker::PhantomData;
use serde::Serialize;

#[derive(Serialize)]
struct A<T>(PhantomData<T>);

#[derive(Serialize)]
struct B<T>(A<T>);

type GhostlyData<T> = PhantomData<T>;

#[derive(Serialize)]
struct C<T>(GhostlyData<T>);

struct NotSerialize;

fn assert_serialize<T: Serialize>() {}

fn main() {
    assert_serialize::<A<NotSerialize>>();
    // assert_serialize::<B<NotSerialize>>();
    // assert_serialize::<C<NotSerialize>>();
    println!("Hello, world!");
}