[GSI] functional 2i test TestUpdateDocsMutation failed on toy build with actual and expected count mismatch

=== RUN TestUpdateDocsMutation
2016/03/03 01:37:11 In TestUpdateDocsMutation()
2016/03/03 01:37:11 Index found: index_age
2016/03/03 01:37:11 PERFSTAT Range 0.2690 seconds
2016/03/03 01:37:11 Len of expected and actual scan results are : 9914 and 9915
2016/03/03 01:37:11 Expected scan count 9914 does not match actual scan count 9915
— FAIL: TestUpdateDocsMutation (0.38s)
common_test.go:90: Error in scan result validation: Expected scan count 9914 does not match actual scan count 9915

Testrunner Logs: http://qa.sc.couchbase.com/job/cen006-nserv-vset01-functional2itests/350/consoleFull