Data Migration "map step" fails at 53% with "KILLED" in CLI

[huntj06]

Hello, migrating Mag 1.9.3.3 to 2.2.1 and I'm getting the following:

[2017-11-11 03:28:42][INFO][mode: data][stage: data migration][step: Map Step]: started
53% [==============>-------------] Remaining Time: 1 secKilled

memory_limit = -1 in php.ini

Not sure what else to check? Any ideas? 

[TylerWolf]

Ever get it figured out?

[Mike Ward]

This is old, but in case someone else comes along looking into the same problem like I did:

In my case, I had the memory_limit set to -1, but it was just running out of memory from the Vagrant box itself. I just gave the virtual machine more memory (I bumped it up from 8G to 12G), and that seemed to make it happy.