Logs not getting compressed
it seems our captured logz are no longer getting compressed with .gz:
Given the size of files involved, it does not make for good experience
:( Also FF seems to have liked .gz very much.
Can we get compression back? Also, would it make sense to compress them
with 'xz -T 0 -0'?
That should prove faster in builds and lower on Nexus storage footprint
(i.e. page cache pressure).