You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: unwrap_used.rs
    path of file: ./repos/rust-clippy/tests/ui-toml/unwrap_used
    
    the code of the file until where you have to start completion: //@compile-flags: --test

#![allow(
    unused_mut,
    clippy::get_first,
    clippy::from_iter_instead_of_collect,
    clippy::useless_vec
)]
#![warn(clippy::unwrap_used)]
#![warn(clippy::get_unwrap)]

use std::collections::{BTreeMap, HashMap, VecDeque};

struct GetFalsePositive {
    arr: [u32; 3],
}

impl GetFalsePositive {
    fn get(&self, pos: usize) -> Option<&u32> {
        self.arr.get(pos)
    }
    fn get_mut(&mut self, pos: usize) -> Option<&mut u32> {
        self.arr.get_mut(pos)
    }
}

fn main() {
    let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
    let mut some_slice = &mut [0, 1, 2, 3];
    let mut some_vec = vec![0, 1, 2, 3];
    let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
    let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
    let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
    let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };

    {
        // Test `get().unwrap()`
        let _ = boxed_slice.get(1).unwrap();
        let _ = some_slice.get(0).unwrap();
        let _ = some_vec.get(0).unwrap();
        let _ = some_vecdeque.get(0).unwrap();
        let _ = some_hashmap.get(&1).unwrap();
        let _ = some_btreemap.get(&1).unwrap();
        #[allow(clippy::unwrap_used)]
        let _ = false_positive.get(0).
    
fn main() {
    let mut boxed_slice: Box<[u8]> = Box::new([0, 1, 2, 3]);
    let mut some_slice = &mut [0, 1, 2, 3];
    let mut some_vec = vec![0, 1, 2, 3];
    let mut some_vecdeque: VecDeque<_> = some_vec.iter().cloned().collect();
    let mut some_hashmap: HashMap<u8, char> = HashMap::from_iter(vec![(1, 'a'), (2, 'b')]);
    let mut some_btreemap: BTreeMap<u8, char> = BTreeMap::from_iter(vec![(1, 'a'), (2, 'b')]);
    let mut false_positive = GetFalsePositive { arr: [0, 1, 2] };

    {
        // Test `get().unwrap()`
        let _ = boxed_slice.get(1).unwrap();
        let _ = some_slice.get(0).unwrap();
        let _ = some_vec.get(0).unwrap();
        let _ = some_vecdeque.get(0).unwrap();
        let _ = some_hashmap.get(&1).unwrap();
        let _ = some_btreemap.get(&1).unwrap();
        #[allow(clippy::unwrap_used)]
        let _ = false_positive.get(0).unwrap();
        // Test with deref
        let _: u8 = *boxed_slice.get(1).unwrap();
    }

    {
        // Test `get_mut().unwrap()`
        *boxed_slice.get_mut(0).unwrap() = 1;
        *some_slice.get_mut(0).unwrap() = 1;
        *some_vec.get_mut(0).unwrap() = 1;
        *some_vecdeque.get_mut(0).unwrap() = 1;
        // Check false positives
        #[allow(clippy::unwrap_used)]
        {
            *some_hashmap.get_mut(&1).unwrap() = 'b';
            *some_btreemap.get_mut(&1).unwrap() = 'b';
            *false_positive.get_mut(0).unwrap() = 1;
        }
    }

    {
        // Test `get().unwrap().foo()` and `get_mut().unwrap().bar()`
        let _ = some_vec.get(0..1).unwrap().to_vec();
        let _ = some_vec.get_mut(0..1).unwrap().to_vec();
    }
}