The error occurs in hibernate-validator-tck-runner module and is caused by the gmaven plugin.
[ERROR] Failed to execute goal org.codehaus.gmaven:gmaven-plugin:1.4:execute (configure-properties) on project hibernate-validator-tck-runner: startup failed, script1453460414006.groovy: 2: unexpected char: '\' @ line 2, column 191.
[ERROR] 1 error
[ERROR] -> [Help 1]
[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] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :hibernate-validator-tck-runner