devstudio.product_master Job on Jenkins is failing

[ERROR] Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:1.3.0-SNAPSHOT:build-qualifier-aggregator (default-build-qualifier-aggregator) on project com.jboss.devstudio.core.site: Execution default-build-qualifier-aggregator of goal org.eclipse.tycho:tycho-packaging-plugin:1.3.0-SNAPSHOT:build-qualifier-aggregator failed: Could not resolve plugin org.eclipse.equinox.launcher.win32.win32.x86_null; Path to dependency: -> [Help 1]
14:37:28 org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:1.3.0-SNAPSHOT:build-qualifier-aggregator (default-build-qualifier-aggregator) on project com.jboss.devstudio.core.site: Execution default-build-qualifier-aggregator of goal org.eclipse.tycho:tycho-packaging-plugin:1.3.0-SNAPSHOT:build-qualifier-aggregator failed: Could not resolve plugin org.eclipse.equinox.launcher.win32.win32.x86_null; Path to dependency:
14:37:28 
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:213)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
14:37:28     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
14:37:28     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
14:37:28     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
14:37:28     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
14:37:28     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
14:37:28     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
14:37:28     at java.lang.reflect.Method.invoke (Method.java:498)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
14:37:28 Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-build-qualifier-aggregator of goal org.eclipse.tycho:tycho-packaging-plugin:1.3.0-SNAPSHOT:build-qualifier-aggregator failed: Could not resolve plugin org.eclipse.equinox.launcher.win32.win32.x86_null; Path to dependency:
14:37:28 
14:37:28     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:145)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
14:37:28     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
14:37:28     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
14:37:28     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
14:37:28     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
14:37:28     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
14:37:28     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
14:37:28     at java.lang.reflect.Method.invoke (Method.java:498)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
14:37:28 Caused by: java.lang.RuntimeException: Could not resolve plugin org.eclipse.equinox.launcher.win32.win32.x86_null; Path to dependency:
14:37:28 
14:37:28     at org.eclipse.tycho.core.ArtifactDependencyVisitor.newRuntimeException (ArtifactDependencyVisitor.java:42)
14:37:28     at org.eclipse.tycho.core.ArtifactDependencyVisitor.missingPlugin (ArtifactDependencyVisitor.java:33)
14:37:28     at org.eclipse.tycho.core.osgitools.AbstractArtifactDependencyWalker.traversePlugin (AbstractArtifactDependencyWalker.java:216)
14:37:28     at org.eclipse.tycho.core.osgitools.AbstractArtifactDependencyWalker.traverseProduct (AbstractArtifactDependencyWalker.java:159)
14:37:28     at org.eclipse.tycho.core.osgitools.EclipseRepositoryProject$1.walk (EclipseRepositoryProject.java:61)
14:37:28     at org.eclipse.tycho.buildversion.BuildQualifierAggregatorMojo.getBuildTimestamp (BuildQualifierAggregatorMojo.java:77)
14:37:28     at org.eclipse.tycho.buildversion.BuildQualifierMojo.calculateQualifiedVersion (BuildQualifierMojo.java:162)
14:37:28     at org.eclipse.tycho.buildversion.BuildQualifierMojo.execute (BuildQualifierMojo.java:135)
14:37:28     at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:134)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:208)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:154)
14:37:28     at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:146)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:117)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
14:37:28     at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:51)
14:37:28     at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:128)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:309)
14:37:28     at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:194)
14:37:28     at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:107)
14:37:28     at org.apache.maven.cli.MavenCli.execute (MavenCli.java:955)
14:37:28     at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:290)
14:37:28     at org.apache.maven.cli.MavenCli.main (MavenCli.java:194)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
14:37:28     at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62)
14:37:28     at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
14:37:28     at java.lang.reflect.Method.invoke (Method.java:498)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:289)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:229)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:415)
14:37:28     at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)
14:37:28 [ERROR] 
14:37:28 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
14:37:28 [ERROR] 
14:37:28 [ERROR] For more information about the errors and possible solutions, please read the following articles:
14:37:28 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
14:37:28 [ERROR] 
14:37:28 [ERROR] After correcting the problems, you can resume the build with the command
14:37:28 [ERROR]   mvn <goals> -rf :com.jboss.devstudio.core.site