Uncaught exception 'OutOfBoundsException' with message 'Integer key 1 is out of bounds' in /base/SiegeStats.php:27

[reedy]

If the current user can't access a siege config, it shouldn't cause an uncaught exception

Noticed whilst trying to get #57 to work

reedy@hhvm-oss-performance:/home/reedy/oss-performance$ hhvm perf.php --mediawiki --hhvm=`which hhvm` --no-proxygen --i-am-not-benchmarking

**************************************************
** 2015-11-29 02:01:32 UTC
** Configuration: MediaWikiTarget on /usr/bin/hhvm

**************************
** 2015-11-29 02:01:32 UTC
** Installing framework

**************************
** 2015-11-29 02:01:38 UTC
** There is no setUpTest

**************************
** 2015-11-29 02:01:38 UTC
** Starting Nginx

**************************
** 2015-11-29 02:01:39 UTC
** Starting PHP Engine
running hphp...
all files saved in /tmp/hhvm-nginxv21MtR ...
running hphp took 0'49" (49573597 us) wall time
mapping self...
mapping self took 0'00" (2622 us) wall time
loading static content...
loaded file cache from /tmp/hhvm-nginxv21MtR/static.content
loading static content took 0'00" (5066 us) wall time

**************************
** 2015-11-29 02:02:31 UTC
** Running sanity check

*******************************************
** 2015-11-29 02:02:34 UTC
** Starting Siege for single request warmup
****************************************************
siege: could not open /root/.siegerc
run 'siege.config' to generate a new .siegerc file
****************************************************

******************************************
** 2015-11-29 02:02:34 UTC
** Starting Siege for multi request warmup
****************************************************
siege: could not open /root/.siegerc
run 'siege.config' to generate a new .siegerc file
****************************************************

****************************
** 2015-11-29 02:02:34 UTC
** Clearing nginx access.log

*******************************
** 2015-11-29 02:02:34 UTC
** Starting Siege for benchmark
****************************************************
siege: could not open /root/.siegerc
run 'siege.config' to generate a new .siegerc file
****************************************************

**************************
** 2015-11-29 02:02:34 UTC
** Collecting results

Fatal error: Uncaught exception 'OutOfBoundsException' with message 'Integer key 1 is out of bounds' in /home/reedy/oss-performance/base/SiegeStats.php:27
Stack trace:
#0 /home/reedy/oss-performance/base/PerfRunner.php(151): Siege->collectStats()
#1 /home/reedy/oss-performance/base/PerfRunner.php(42): PerfRunner::RunWithOptionsAndEngine()
#2 /home/reedy/oss-performance/base/PerfRunner.php(17): PerfRunner::RunWithOptions()
#3 /home/reedy/oss-performance/perf.php(15): PerfRunner::RunWithArgv()
#4 /home/reedy/oss-performance/perf.php(19): perf_main()
#5 {main}
reedy@hhvm-oss-performance:/home/reedy/oss-performance$