UserAgent: Mozilla/5.0 (X11; CrOS armv7l 8172.16.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.29 Safari/537.36
Platform: Platform 8172.16.0 (Official Build) dev-channel daisy

Steps to reproduce the problem:
1. dev_install --reinstall -y
2. 
3. 

What is the expected behavior?
process finishes without errors

What went wrong?
1. Problem with sandbox binary ... disabling
2. Exits with Error at "dnsmasq" package with: "dnsmasq user missing"
3. Exits with Error at "tcpdump" package with: "tcpdump user missing"

Did this work before? N/A 

Chrome version: 51.0.2704.29  Channel: dev
OS Version: 8172.16.0
Flash Version: Shockwave Flash 21.0 r0