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: value.rs
    path of file: ./repos/msgpack-rust/rmpv/benches
    
    the code of the file until where you have to start completion: #![feature(test)]

extern crate test;

use test::Bencher;

use rmpv::decode::*;

// Encoded value: [1, 0, [[["127.0.0.1", 59074]], 1, {0: ["read", {}, {0: ["value", {}], 1: ["error", {}]}], 1: ["write", {}, {0: ["value", {}], 1: ["error", {}]}], 2
    
fn read_large_array(b: &mut Bencher, element_count: usize) {
    // Creat buffer, fill it with bytes
    let size = element_count * 5 /* uint32 size */ + 5 /* array overhead */;
    let mut buf = Vec::with_capacity(size);
    buf.resize(size, 0);

    // Write header
    let size_bytes: [u8; 4] = (size as u32 - 5).to_be_bytes();
    buf[0] = 0xc6;
    buf[1] = size_bytes[0];
    buf[2] = size_bytes[1];
    buf[3] = size_bytes[2];
    buf[4] = size_bytes[3];

    // Write elements
    let elements = &mut buf[5..];
    for i in 0..element_count {
        let offset = i * 5;
        let value_bytes = 42u32.to_be_bytes();
        elements[offset] = 0xce; // u32
        elements[offset + 1] = value_bytes[0];
        elements[offset + 2] = value_bytes[1];
        elements[offset + 3] = value_bytes[2];
        elements[offset + 4] = value_bytes[3];
    }

    // Read value
    b.iter(|| {
        let res = read_value(&mut &buf[..]).unwrap();
        test::black_box(res);
    });
    b.bytes = size as u64;
}