[ 
https://jira.codehaus.org/browse/MRELEASE-484?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=350736#comment-350736
 ] 

Torben Knerr commented on MRELEASE-484:
---------------------------------------

Still seeing this in 2.4.2 with Git scm provider and both <developerConnection> 
and <url> being set in the releaseBackup pom

> release:rollback fails after branch with NPE and complaint about missing scm 
> URL
> --------------------------------------------------------------------------------
>
>                 Key: MRELEASE-484
>                 URL: https://jira.codehaus.org/browse/MRELEASE-484
>             Project: Maven Release Plugin
>          Issue Type: Bug
>          Components: branch, rollback
>    Affects Versions: 2.0-beta-9
>            Reporter: Benson Margulies
>            Assignee: Robert Scholte
>             Fix For: 2.3.2
>
>
> After a problem with release:branch (possibly the 'remoteTagging' problem) an 
> attempt to run rollback got me the following. The SCM urls are indeed in the 
> POM.
> {noformat}
> [INFO] Trace
> java.lang.NullPointerException: The scm url cannot be null.
>       at 
> org.apache.maven.scm.manager.AbstractScmManager.makeScmRepository(AbstractScmManager.java:181)
>       at 
> org.apache.maven.shared.release.scm.DefaultScmRepositoryConfigurator.getConfiguredRepository(DefaultScmRepositoryConfigurator.java:62)
>       at 
> org.apache.maven.shared.release.phase.RestoreBackupPomsPhase.restorePomBackup(RestoreBackupPomsPhase.java:100)
>       at 
> org.apache.maven.shared.release.phase.RestoreBackupPomsPhase.execute(RestoreBackupPomsPhase.java:69)
>       at 
> org.apache.maven.shared.release.DefaultReleaseManager.rollback(DefaultReleaseManager.java:250)
>       at 
> org.apache.maven.shared.release.DefaultReleaseManager.rollback(DefaultReleaseManager.java:227)
>       at 
> org.apache.maven.plugins.release.RollbackReleaseMojo.execute(RollbackReleaseMojo.java:54)
>       at 
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:553)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:523)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:268)
>       at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
>       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
>       at org.apache.maven.cli.MavenCli.main(MavenCli.java:356)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
>       at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
>       at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
>       at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
> [INFO] 
> ------------------------------------------------------------------------
> {noformat}



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