Per
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=culicidae&dt=2017-04-15%2004%3A00%3A02
2017-04-15 04:31:21.657 GMT [16792] FATAL: could not reattach to shared memory (key=6280001, addr=0x7f692fece000):
Invalidargument
Presumably, this is the same issue we've seen on Windows where the
shmem address range gets overlapped by code loaded at a randomized
address. Is there any real hope of making that work?
regards, tom lane