i created a new project using Unity 2018.3.11f1 with all Jobs, Burst and Collection packages.
Without having any jobs/burst based code i am able to build the apk !
However trying to build a jobs based code i get these errors in the image below and i am not able to build the apk.
HOW TO FIX !?
I just downloaded the latest NDK ( seems it is required for Burst to work )