Description of problem:
Use Java features from Java 8, attempt to upgrade the environment to use java 8 and it fails to build the app. Changed the marker and the pom.xml and neither works.

Version-Release number of selected component (if applicable):
Tomcat 7 (JBoss EWS 2.0)

How reproducible:
100%

Steps to Reproduce:
1. rhc app-create test jbossews-2.0
2. cd test
3. mv .openshift/markers/java7 .openshift/markers/java8
4. vim pom.xml 
     change 1.6 to 1.8 for source and target
5. vim src/main/java/Experimental.java
     add the following:
import java.time.LocalDateTime;

public class Experimental {

       public static void main(String[] args) {
               System.out.println("Today: "+LocalDateTime.now());
               System.out.println("VM  Total Memory: "+Runtime.getRuntime().totalMemory());
               System.out.println("VM  Free Memory: "+Runtime.getRuntime().maxMemory());
               System.out.println("VM  Max Memory: "+Runtime.getRuntime().freeMemory());
       }
}
6. git add -A ; git commit -m "all the changes" ; git push


Actual results:
Counting objects: 19, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (5/5), done.
Writing objects: 100% (10/10), 739 bytes | 0 bytes/s, done.
Total 10 (delta 2), reused 0 (delta 0)
remote: The jbossews cartridge is already stopped
remote: Repairing links for 1 deployments
remote: Syncing git content to other proxy gears
remote: Building git ref 'master', commit 5cf082e
remote: Using Maven mirror /var/lib/openshift/5643a47a89f5cf4b5800004b/app-root/runtime/repo//.openshift/config/settings.rhcloud.xml
remote: Apache Maven 3.0.4 (r1232336; 2012-12-18 14:36:37-0500)
remote: Maven home: /usr/share/java/apache-maven-3.0.4
remote: Java version: 1.7.0_91, vendor: Oracle Corporation
remote: Java home: /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.91/jre
remote: Default locale: en_US, platform encoding: ANSI_X3.4-1968
remote: OS name: "linux", version: "2.6.32-504.34.1.el6.x86_64", arch: "i386", family: "unix"
remote: Found pom.xml... attempting to build with 'mvn --global-settings /var/lib/openshift/5643a47a89f5cf4b5800004b/app-root/runtime/repo//.openshift/config/settings.rhcloud.xml clean package -Popenshift -DskipTests'
remote: [INFO] Scanning for projects...
remote: [INFO]                                                                         
remote: [INFO] ------------------------------------------------------------------------
remote: [INFO] Building experimental 1.0
remote: [INFO] ------------------------------------------------------------------------
remote: [INFO] 
remote: [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ experimental ---
remote: [INFO] 
remote: [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ experimental ---
remote: [debug] execute contextualize
remote: [INFO] Using 'UTF-8' encoding to copy filtered resources.
remote: [INFO] Copying 1 resource
remote: [INFO] 
remote: [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ experimental ---
remote: [INFO] Compiling 1 source file to /var/lib/openshift/5643a47a89f5cf4b5800004b/app-root/runtime/repo/target/classes
remote: [INFO] -------------------------------------------------------------
remote: [ERROR] COMPILATION ERROR : 
remote: [INFO] -------------------------------------------------------------
remote: [ERROR] Failure executing javac, but could not parse the error:
remote: javac: invalid target release: 1.8
remote: Usage: javac <options> <source files>
remote: use -help for a list of possible options
remote: 
remote: [INFO] 1 error
remote: [INFO] -------------------------------------------------------------
remote: [INFO] ------------------------------------------------------------------------
remote: [INFO] BUILD FAILURE
remote: [INFO] ------------------------------------------------------------------------
remote: [INFO] Total time: 2.991s
remote: [INFO] Finished at: Wed Nov 11 15:50:18 EST 2015
remote: [INFO] Final Memory: 4M/63M
remote: [INFO] ------------------------------------------------------------------------
remote: [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project experimental: Compilation failure
remote: [ERROR] Failure executing javac, but could not parse the error:
remote: [ERROR] javac: invalid target release: 1.8
remote: [ERROR] Usage: javac <options> <source files>
remote: [ERROR] use -help for a list of possible options
remote: [ERROR] -> [Help 1]
remote: [ERROR] 
remote: [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
remote: [ERROR] Re-run Maven using the -X switch to enable full debug logging.
remote: [ERROR] 
remote: [ERROR] For more information about the errors and possible solutions, please read the following articles:
remote: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
remote: An error occurred executing 'gear postreceive' (exit code: 1)
remote: Error message: CLIENT_ERROR: Failed to execute: 'control build' for /var/lib/openshift/5643a47a89f5cf4b5800004b/jbossews
remote: 
remote: For more details about the problem, try running the command again with the '--trace' option.
To ssh://5643a47a89f5cf4b5800004b.com/~/git/experimental.git/
   0f17269..5cf082e  master -> master

Expected results:
build success

Additional info:

That is the error code from the customer which has slightly different names and a few extra lines but the idea is the same.