Description of problem:
It will output '**BUILD FAILED/CANCELLED**...' 

Version-Release number of selected component (if applicable):
rhc-0.89.10-1.el6_2.noarch
rhc-cartridge-jenkins-1.4-0.89.2-1.el6_2.noarch
rhc-broker-0.89.7-1.el6_2.noarch

How reproducible:
sometimes

Steps to Reproduce:
1.Create any type of application
# rhc-create-app -t php-5.3 -p xxx -a phptest
2.Create an jenkins application
# rhc-create-app -t jenkins-1.4 -p xxx -a jenkinstest
3.Embedded jenkins to the application
# rhc-ctl-app -p xxx -e add-jenkins-client-1.4 -a phptest
4.Git push the application
  
Actual results:
Jenkins builds fail

Expected results:
Jenkins builds successfully without any error

Additional info: