-e: see title
--works in 2018.2b9, doesn't work in 2018.3a1 and a2
--also works on OSX with 2018.3a1 and a2

-repro:
--start 2018.3a1 or a2
--create new project with the HDRP template
--see it importing assets
--NOTICE it crashes with an allocation error (see log):

DynamicHeapAllocator out of memory - Could not get memory for large allocation 178954240!
Could not allocate memory: System out of memory!
Trying to allocate: 178954240B with 32 alignment. MemoryLabel: Texture
Allocation happened at: Line:162 in C:\buildslave\unity\build\Runtime/Graphics/Texture2DArray.cpp