Upgrade to ubuntu 20.04 See if this helps fix zstd crash in python nightly (unlikely). Also get postgresql 12 that includes websearch_to_tsquery for possible future support of Postgresql FTS by Roundup.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))