[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Kurento Java Tutorial - Hello World 6.2.1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-enforcer-plugin:1.4.1:enforce (enforce-java-version) @ kurento-hello-world ---
[INFO]
[INFO] --- maven-enforcer-plugin:1.4.1:enforce (enforce-maven-version) @ kurento-hello-world ---
[INFO]
[INFO] --- buildnumber-maven-plugin:1.4:create-timestamp (get-build-timestamp) @ kurento-hello-world ---
[INFO]
[INFO] --- buildnumber-maven-plugin:1.4:create (get-scm-revision) @ kurento-hello-world ---
[INFO] Executing: /bin/sh -c cd '/var/www/webrtc/kurento-tutorial-java/kurento-hello-world' && 'git' 'rev-parse' '--verify' 'HEAD'
[INFO] Working directory: /var/www/webrtc/kurento-tutorial-java/kurento-hello-world
[INFO] Storing buildNumber: c8043c91150fc8b99141575451454db82535192b at timestamp: 1452523076572
[WARNING] Cannot get the branch information from the git repository:
Detecting the current branch failed: fatal: ref HEAD is not a symbolic ref
[INFO] Executing: /bin/sh -c cd '/var/www/webrtc/kurento-tutorial-java/kurento-hello-world' && 'git' 'rev-parse' '--verify' 'HEAD'
[INFO] Working directory: /var/www/webrtc/kurento-tutorial-java/kurento-hello-world
[INFO] Storing buildScmBranch: UNKNOWN
[INFO]
[INFO] --- exec-maven-plugin:1.4.0:exec (default) @ kurento-hello-world ---
Additional error details:
github.com[0: 192.30.252.131]: errno=Connection timed out
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2:14.427s
[INFO] Finished at: Mon Jan 11 14:40:06 UTC 2016
[INFO] Final Memory: 13M/31M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:exec (default) on project kurento-hello-world: Command execution failed. Process exited with an error: 1 (Exit value: 1) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles: