python multiprocess 子进程和主进程同时抛出异常时子进程无法退出

import multiprocessing
import os
import time
import traceback

def work(args):
    try:
        time.sleep(1)
        print(os.get_pid())
    except Exception as e:
    	# 子进程报错
        a += 1
        print(traceback.format_exc(3))

def callback(args):
    print(args)

def errorcallback(args):
	# 处理子进程错误的函数报错
	a = 1/0
    print(args)

def task():
    pool =  multiprocessing.Pool(processes=2)
    for i in range(10):
        res = pool.apply_async(work,args=(i,),callback=callback,error_callback=errorcallback)
    # for r in res.get():
    #     print(r)
    pool.close()
    pool.join()
  
task()

import traceback
def errorcallback(args):
    try:
        a = 1/0
        print(args)
    except:
        print(traceback.format_exc(3))