TL;DR: oom at 7am, Too many open files at 11am.
I cycled the image, lets wait…
To quote the log:
2017-02-16 07:31:22.318429500 2017-02-16 07:31:22.318431500 out of memory 2017-02-16 07:31:22.318431500 2017-02-16 07:31:22.318431500 1066476624 Behavior>new 2017-02-16 07:31:22.318432500 1066476532 Exception class>signal 2017-02-16 07:31:22.318432500 1066476440 Behavior>basicNew 2017-02-16 07:31:22.318432500 1066476348 Behavior>new 2017-02-16 07:31:22.318433500 1066476256 Exception class>signal 2017-02-16 07:31:22.318433500 1066476164 Behavior>basicNew 2017-02-16 07:31:22.318433500 1066476072 Behavior>new 2017-02-16 07:31:22.318434500 1066475980 Exception class>signal 2017-02-16 07:31:22.318465500 1066475796 Behavior>basicNew 2017-02-16 07:31:22.318466500 1066475704 Behavior>new 2017-02-16 07:31:22.318466500 1066475612 Exception class>signal 2017-02-16 07:31:22.318466500 1066475520 Behavior>basicNew 2017-02-16 07:31:22.318467500 1066475428 Behavior>new 2017-02-16 07:31:22.318467500 1066475336 Exception class>signal 2017-02-16 07:31:22.318467500 1066475244 Behavior>basicNew 2017-02-16 07:31:22.318468500 1066475152 Behavior>new 2017-02-16 07:31:22.318468500 1066475060 Exception class>signal 2017-02-16 07:31:22.318471500 1066474968 Behavior>basicNew 2017-02-16 07:31:22.318471500 1066474876 Behavior>new 2017-02-16 07:31:22.318471500 1066474784 Exception class>signal 2017-02-16 07:31:22.318472500 1066474692 Behavior>basicNew: 2017-02-16 07:31:22.318472500 1066474600 Array class>new: 2017-02-16 07:31:22.318472500 1066474508 EventSensor>fetchMoreEvents 2017-02-16 07:31:22.318473500 1066473864 EventSensor>eventTickler 2017-02-16 07:31:22.318473500 1066473716 BlockClosure>on:do: 2017-02-16 07:31:22.318475500 817936580 EventSensor>eventTickler 2017-02-16 07:31:22.318475500 817936488 EventSensor>installEventTickler 2017-02-16 07:31:22.318476500 817936672 BlockClosure>newProcess 2017-02-16 07:31:22.388240500 starting ./run in pid 15028 2017-02-16 07:31:22.388284500 cd /…/squeaksourcecom/SqueakSource 2017-02-16 07:31:22.388379500 exec setuidgid squeaksourcecom /usr/local/bin/squeak -vm-display-null /srv/squeaksourcecom/SqueakSource/squeaksource.6.image 2017-02-16 10:41:23.678772500 acceptHandler: Too many open files 2017-02-16 10:41:23.680035500 acceptHandler: aborting server 7 pss=0x1a136a0 2017-02-16 10:42:13.734814500 socketStatus: freeing invalidated pss=0x1a136a0