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[tycho-user] NPE with tycho-buildtimestamp-jgit

Hi there!

I'm trying theÂtycho-buildtimestamp-jgit plugin without luck.
Everytime I get the following stack trace:

[DEBUG] -- end configuration --
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] mlm.eclipse.ide.jsbuilder-parent .................. SUCCESS [0.281s]
[INFO] mlm.eclipse.ide.jsbuilder ......................... FAILURE [0.718s]
[INFO] mlm.eclipse.ide.jsbuilder.feature ................. SKIPPED
[INFO] mlm.eclipse.ide.jsbuilder-repository .............. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 34.063s
[INFO] Finished at: Mon Jul 23 10:56:37 CEST 2012
[INFO] Final Memory: 74M/178M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:0.16.0-SNAPSHOT:build-qualifier (default-build-qualifier) on project mlm.eclipse.ide.jsbuilder: Execution default-build-quali
fier of goal org.eclipse.tycho:tycho-packaging-plugin:0.16.0-SNAPSHOT:build-qualifier failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.eclipse.tycho:tycho-packaging-plugin:0.16.0-SNAPSHOT:build-qualifier (default-build-qualifier) on project mlm.ecli
pse.ide.jsbuilder: Execution default-build-qualifier of goal org.eclipse.tycho:tycho-packaging-plugin:0.16.0-SNAPSHOT:build-qualifier failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-build-qualifier of goal org.eclipse.tycho:tycho-packaging-plugin:0.16.0-SNAPSHOT:build-qualifier failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    ... 19 more
Caused by: java.lang.NullPointerException
    at org.eclipse.tycho.extras.buildtimestamp.jgit.JGitBuildTimestampProvider.getTimestamp(JGitBuildTimestampProvider.java:86)
    at org.eclipse.tycho.buildversion.BuildQualifierMojo.getBuildTimestamp(BuildQualifierMojo.java:182)
    at org.eclipse.tycho.buildversion.BuildQualifierMojo.execute(BuildQualifierMojo.java:156)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
    ... 20 more
[ERROR]
[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
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] Â mvn <goals> -rf :mlm.eclipse.ide.jsbuilder


Please have a look atÂhttps://github.com/mlehmannm/mlm-eclipse-ide-jsbuilder


TIA,
Marco