[EnvInject] - Loading node environment variables.
[EnvInject] - Preparing an environment for the build.
[EnvInject] - Keeping Jenkins system variables.
[EnvInject] - Keeping Jenkins build variables.
[EnvInject] - Executing and processing the following script content: 
touch onSlave

Unpacking http://nodejs.org/dist/v0.10.25/node-v0.10.25-linux-x64.tar.gz to /home/ec2-user/jenkins/tools/jenkins.plugins.nodejs.tools.NodeJSInstallation/0.10.25 on ci-slave (i-76a50355)
[jenkins] $ /bin/sh -xe /tmp/hudson8530494034714608867.sh
+ touch onSlave
[EnvInject] - Script executed successfully.
[EnvInject] - Injecting contributions.