subjack hangs and generates corupted json

[mandricmihai]

Given this list of domains

ftp.newslimited.com.au
news-gw.newsltd.com.au
vcs.newsltd.com.au
portalsvr03.newsource.com.au
ns1.newsltd.com.auwww.newsintarchive.co.uk
bao6qoyw7jaistmzsrldj2jc2ynaa5vh._domainkey.newslimited.com.au
myaccess.newsltd.com.au
nlm.newsmachine.newsltd.com.au
search03.newsource.com.au
silverback.newsltd.com.au
mx3.newslimited.com.au
ftp2.gcb.newsltd.com.au

Subjack will just hang at the end and not exiting and the .json file is corrupted.