signal 11 for 'conftest' && poudriere jails

While running poudriere jails on a very recent CURRENT:

FreeBSD jet 13.0-CURRENT FreeBSD 13.0-CURRENT #1 r349041: Sat Jun 15 07:45:13 CEST 2019     guru_at_jet:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64

I see messages about signal 11 for 'conftest'. The uid 65534 (nobody)
let me think in poudriere, because there is nothing else running on this
box:

Jun 16 19:31:46 jet kernel: pid 55572 (conftest), jid 23, uid 65534: exited on signal 11 (core dumped)
Jun 16 19:37:25 jet su[98388]: guru to root on /dev/pts/2
Jun 16 20:01:32 jet kernel: pid 26452 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
Jun 16 20:02:26 jet kernel: pid 54189 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
Jun 16 20:14:09 jet kernel: pid 86215 (conftest), jid 23, uid 65534: exited on signal 11 (core dumped)
Jun 16 20:31:06 jet ntpdate[79734]: step time server 130.149.17.21 offset 0.309740 sec
Jun 16 20:38:39 jet kernel: pid 61044 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
Jun 16 20:45:29 jet kernel: pid 24274 (conftest), jid 31, uid 65534: exited on signal 11 (core dumped)
Jun 16 21:31:06 jet ntpdate[99262]: step time server 130.149.17.21 offset 0.309141 sec
Jun 16 22:31:06 jet ntpdate[27064]: step time server 130.149.17.21 offset 0.309090 sec
Jun 16 23:31:06 jet ntpdate[1088]: step time server 130.149.17.21 offset 0.309793 sec
Jun 16 23:51:38 jet kernel: pid 10847 (java), jid 29, uid 65534, was killed: out of swap space
Jun 17 00:31:06 jet ntpdate[6936]: step time server 130.149.17.21 offset 0.308939 sec
Jun 17 00:32:58 jet su[10397]: guru to root on /dev/pts/4
Jun 17 00:38:22 jet su[28548]: guru to root on /dev/pts/2
Jun 17 01:31:06 jet ntpdate[39553]: step time server 130.149.17.21 offset 0.309018 sec
Jun 17 01:41:23 jet kernel: pid 81104 (conftest), jid 26, uid 65534: exited on signal 11 (core dumped)
Jun 17 02:17:29 jet kernel: pid 9625 (conftest), jid 29, uid 65534: exited on signal 11 (core dumped)
Jun 17 02:21:56 jet kernel: pid 36351 (conftest), jid 29, uid 65534: exited on signal 11 (core dumped)

What does this mean? What is 'conftest' at all?

	matthias
...
-- 
Matthias Apitz, ✉ guru_at_unixarea.de, http://www.unixarea.de/ +49-176-38902045
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