> 1. How fatal is it, do I need a machine running Ubuntu natively.
It's not fatal, the build should continue and work successfully. I know
that there are problems with docker-like systems (eventually tracking down
to some workarounds for a kernel bug -- turning off a lot of the security
helps,
AOSP master.
Getting the following warnings:
18:54:25 Build sandboxing disabled due to nsjail error. This may become
fatal in the future.
18:54:25 Please let us know why nsjail doesn't work in your environment at:
18:54:25 https://groups.google.com/forum/#!forum/android-building