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#![cfg_attr(not(feature = "std"), no_std)]
#![allow(dead_code, unused_imports)]
#[cfg(not(feature = "std"))]
extern crate alloc;
#[cfg(not(feature = "std"))]
use alloc::vec::Vec;
use derive_more::Index;
#[derive(Index)]
struct MyVec(Vec<i32>);
#[derive(Index)]
struct Numbers {
#[index]
numbers: Vec<i32>,
useless: bool,
}