Restore checkstyle validation on nemo.sonarqube.org

[romani]

http://nemo.sonarqube.org/dashboard/index?id=com.puppycrawl.tools%3Acheckstyle
Last analysis was done at - Version 6.8-SNAPSHOT / June 2 2015 9:51 PM

Discussion with Sonar team - https://groups.google.com/forum/#!topic/sonarqube/bYanojEy9LI

Problem is that checkstyle project is failed to build on java7 by sonar team, their command :

mvn clean install cobertura:cobertura -Dcobertura.report.format=xml -Dmaven.test.failure.ignore=true -V -Dcheckstyle.skip=true -Dpmd.skip=true -Dcobertura.skip=true

output:

[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2:37.456s
[INFO] Finished at: Wed Jul 01 06:49:14 CEST 2015
[INFO] Final Memory: 44M/495M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test (default-test) on project checkstyle: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test failed: There was an error in the forked process
[ERROR] java.lang.NoClassDefFoundError: com/puppycrawl/tools/checkstyle/api/CheckstyleException
[ERROR] at java.lang.Class.getDeclaredMethods0(Native Method)
[ERROR] at java.lang.Class.privateGetDeclaredMethods(Class.java:2570)
[ERROR] at java.lang.Class.getMethod0(Class.java:2813)
[ERROR] at java.lang.Class.getMethod(Class.java:1663)
[ERROR] at org.apache.maven.surefire.util.ReflectionUtils.tryGetMethod(ReflectionUtils.java:57)
[ERROR] at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.isSuiteOnly(JUnit3TestChecker.java:64)
[ERROR] at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.isValidJUnit3Test(JUnit3TestChecker.java:59)
[ERROR] at org.apache.maven.surefire.common.junit3.JUnit3TestChecker.accept(JUnit3TestChecker.java:54)
[ERROR] at org.apache.maven.surefire.common.junit4.JUnit4TestChecker.accept(JUnit4TestChecker.java:52)
[ERROR] at org.apache.maven.surefire.util.DefaultScanResult.applyFilter(DefaultScanResult.java:97)
[ERROR] at org.apache.maven.surefire.junit4.JUnit4Provider.scanClassPath(JUnit4Provider.java:222)
[ERROR] at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:107)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
[ERROR] at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
[ERROR] Caused by: java.lang.ClassNotFoundException: com.puppycrawl.tools.checkstyle.api.CheckstyleException
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
[ERROR] at java.security.AccessController.doPrivileged(Native Method)
[ERROR] at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
[ERROR] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
[ERROR] ... 15 more
[ERROR] -> [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:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

on java7 cobertura is failing to path "check":

[INFO] <<< cobertura-maven-plugin:2.7:check (default) @ checkstyle <<<
[INFO]
[INFO] --- cobertura-maven-plugin:2.7:check (default) @ checkstyle --- [INFO] Cobertura 2.1.1 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file
[INFO] Cobertura: Loaded information on 353 classes.
[ERROR] com.puppycrawl.tools.checkstyle.filters.SuppressionsLoader failed coverage check. Line coverage rate of 76.9% is below 77.0%
[ERROR] com.puppycrawl.tools.checkstyle.checks.metrics.NPathComplexityCheck failed coverage check. Line coverage rate of 89.6% is below 90.0%
[ERROR] com.puppycrawl.tools.checkstyle.checks.ClassResolver failed coverage check. Line coverage rate of 92.9% is below 93.0%
[ERROR] com.puppycrawl.tools.checkstyle.api.FileContents failed coverage check. Line coverage rate of 92.8% is below 93.0%
[ERROR] com.puppycrawl.tools.checkstyle.checks.coding.AbstractSuperCheck failed coverage check. Line coverage rate of 87.9% is below 88.0% [INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3:42.905s
[INFO] Finished at: Mon Jul 06 08:12:32 CEST 2015
[INFO] Final Memory: 63M/495M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:cobertura-maven-plugin:2.7:check (default) on project checkstyle: Coverage check failed. See messages above. -> [Help 1]

[romani]

new profile was created that will be activated only for java8, so all launches on java7 will skip cobertura:check phase, but Travis will catch such contributors.