This seems to be happening relatively often, where the Wikitech special job runner service fails due to an OOM and then recovers again:
Dec 16 20:57:02 cloudweb1003 mwscript[11808]: 2023-12-16 20:57:02 parsoidCachePrewarm Special: revId=1771573 pageId=441472 page_touched=20230830123007 causeAction=view options=0 rootJobIsSelf=1 rootJobSignature=8d159ac15225c9214459e05d14364f3a20224c94 rootJobTimestamp=20231216205338 requestId=cdf2dfdf-2147-4bc7-bbff-318f1b742549 namespace=-1 title= (id=14802851,timestamp=20231216205338) STARTING Dec 16 20:57:03 cloudweb1003 php[11813]: PHP Fatal error: Allowed memory size of 157286400 bytes exhausted (tried to allocate 20480 bytes) in /srv/mediawiki/php-1.42.0-wmf.9/vendor/wikimedia/parsoid/src/Wt2Html/Grammar.php on line 3732 Dec 16 20:57:03 cloudweb1003 mwscript[11808]: Fatal error: Allowed memory size of 157286400 bytes exhausted (tried to allocate 20480 bytes) in /srv/mediawiki/php-1.42.0-wmf.9/vendor/wikimedia/parsoid/src/Wt2Html/Grammar.php on line 3732 Dec 16 20:57:03 cloudweb1003 php[11813]: PHP Fatal error: Allowed memory size of 157286400 bytes exhausted (tried to allocate 20480 bytes) in /srv/mediawiki/php-1.42.0-wmf.9/includes/debug/logger/monolog/LogstashFormatter.php on line 218 Dec 16 20:57:03 cloudweb1003 mwscript[11808]: Fatal error: Allowed memory size of 157286400 bytes exhausted (tried to allocate 20480 bytes) in /srv/mediawiki/php-1.42.0-wmf.9/includes/debug/logger/monolog/LogstashFormatter.php on line 218 Dec 16 20:57:03 cloudweb1003 systemd[1]: wikitech_run_jobs.service: Main process exited, code=exited, status=255/EXCEPTION Dec 16 20:57:03 cloudweb1003 systemd[1]: wikitech_run_jobs.service: Failed with result 'exit-code'.