where Self: Sized exclusion not working with trait_variant support

[ComputerDruid]

Using cargo script for brevity:

#!/usr/bin/env -S cargo +nightly -Zscript
---cargo
[package]
edition = "2021"
[dependencies]
dynosaur = "0.1.3"
trait-variant = "0.1.2"
---

#[trait_variant::make(Run: Send)]
#[dynosaur::dynosaur(DynLocalRun = dyn LocalRun)]
#[dynosaur::dynosaur(DynRun = dyn Run)]
pub trait LocalRun {
    async fn new() -> std::io::Result<Self>
    where
        Self: Sized;

    async fn run(&mut self) -> std::io::Result<()>;
}

fn main(){}

Gives compile error:

error[E0277]: `()` is not a future
  --> /home/cdruid/.cargo/target/e4/57393f8231c91d/script.rs:11:1
   |
11 | #[trait_variant::make(Run: Send)]
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `()` is not a future
   |
   = help: the trait `Future` is not implemented for `()`

Peeking at the expansion, it looks like it's coming from:

impl<'dynosaur_struct> Run for DynRun<'dynosaur_struct> {
    fn new()
        ->
            impl ::core::future::Future<Output = std::io::Result<Self>> +
            Send where Self: Sized {
        ::core::panicking::panic("internal error: entered unreachable code")
    }

I think the typical workarounds here are either to use async fn new() (currently used for the !Send case) or let fut: ::core::pin::Pin<Box<dyn ::core::future::Future<Output = std::io::Result<Self>> + 'static + Send>> = panic!(); fut (which I believe was used in the original implementation)