The Jenkins job running MediaWiki core unit tests under hhvm produces files such as /tmp/stacktrace\d+.log which are filling out /tmp on the Jenkins slaves.

Looking at hhvm source code, the path can apparently be configured with CoreDumpReportDirectory. It should probably be set to the current working directory.

$ git grep --before-context 1 stacktrace.*\.log
hphp/doc/debug.server-

hphp/doc/debug.server:Normally a crash generates /tmp/stacktrace.<pid>.log file that has stacktrace

hphp/runtime/base/crash-reporter.cpp- char tracefn[RuntimeOption::CoreDumpReportDirectory.length()
hphp/runtime/base/crash-reporter.cpp: + strlen("/stacktrace..log") + strlen(pid) + 1];

hphp/runtime/base/crash-reporter.cpp: sprintf(tracefn, "%s/stacktrace.%s.log",

hphp/util/stack-trace.h- /**
hphp/util/stack-trace.h: * Add extra information to log together with a crash stacktrace log.
$

Version: wmf-deployment
Severity: normal