Two runsunspider tests fail after updating sunspider to 1.0

1) After deleting test/script/external/sunspider, run "ant externals" to svn update sunspider script.

svn info
Path: .
URL: http://svn.webkit.org/repository/webkit/trunk/PerformanceTests/SunSpider
Repository Root: http://svn.webkit.org/repository/webkit
Repository UUID: 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Revision: 153088
Node Kind: directory
Schedule: normal
Last Changed Author: commit-queue@webkit.org
Last Changed Rev: 149548
Last Changed Date: 2013-05-04 07:41:49 +0530 (Sat, 04 May 2013)

2) Run "ant clean test"

2 tests fail with the message below:

test/script/basic/runsunspider.js:89 TypeError: ASSERTION FAILED: -1.3524862408537381 should be -0.16906933525822856 has no such function "printStackTrace"