该问题通常是由于并行执行时共享变量的生命周期错误引起的。为了解决这个问题，我们需要使用一些 Rust 提供的并发编程工具，例如 Mutex 和 Arc。

以下是一个解决示例：

use std::sync::{Arc, Mutex};
use std::thread;

fn segment_sieve(segment: &mut [bool], start: u64, limit: u64) {
    for i in (2..limit).filter(|x| x*x < limit) {
        if segment[(i-start) as usize] {
            for j in ((start+i-1)/i..limit/i).map(|x| i*x) {
                segment[(j-start) as usize] = false;
            }
        }
    }
}

fn parallel_segment_sieve(n: u64, num_threads: usize) -> Vec {
    let limit = (n as f64).sqrt() as u64 + 1;
    let mut primes = vec![2u64];
    let segment_size = (n as f64 / (num_threads as f64 * 2.0)).sqrt() as u64;
    let segments: Vec<_> = (0..num_threads)
        .map(|i| {
            let start = segment_size * i as u64 * 2 + 3;
            let end = start + segment_size * 2 - 2;
            let mut segment = vec![true; segment_size as usize];
            segment_sieve(&mut segment[..], start, end);
            Arc::new(Mutex::new(segment))
        }).collect();
    for i in (3..limit).filter(|x| x%2 == 1) {
        if segments.iter().all(|segment| {
            segment.lock().unwrap()[(i/2-1) as usize]
        }) {
            primes.push(i);
            for segment in &segments {
                let mut sg = segment.lock().unwrap();
                let start = (*sg)[0] as u64;
                let start = if start%2 == 0 {start+1} else {start};
                segment_sieve(&mut sg[..], start, (*sg).len() as u64 +