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When you configure, for your p2 repository a <server> element in your settings.xml that lacks <username> or <password> (see https://maven.apache.org/settings.html#Servers), you get a NPE: [ERROR] Internal error: java.lang.NullPointerException -> [Help 1] org.apache.maven.InternalErrorException: Internal error: java.lang.NullPointerException at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:120) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main (MavenCli.java:192) at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347) Caused by: java.lang.NullPointerException at org.eclipse.tycho.p2.remote.P2PasswordUtil.setCredentials (P2PasswordUtil.java:69) at org.eclipse.tycho.p2.remote.RemoteRepositoryLoadingHelper.setPasswordForLoading (RemoteRepositoryLoadingHelper.java:125) at org.eclipse.tycho.p2.remote.RemoteRepositoryLoadingHelper.getEffectiveLocationAndPrepareLoad (RemoteRepositoryLoadingHelper.java:83) at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.translateAndPrepareLoad (RemoteMetadataRepositoryManager.java:47) at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository (RemoteMetadataRepositoryManager.java:59) at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository (RemoteMetadataRepositoryManager.java:53) at org.eclipse.tycho.p2.target.TargetDefinitionResolver$LoadedIULocation.loadRepository (TargetDefinitionResolver.java:288) at org.eclipse.tycho.p2.target.TargetDefinitionResolver$LoadedIULocation.<init> (TargetDefinitionResolver.java:282) at org.eclipse.tycho.p2.target.TargetDefinitionResolver$ResolverRun.addLocation (TargetDefinitionResolver.java:154) at org.eclipse.tycho.p2.target.TargetDefinitionResolver.resolveContentWithExceptions (TargetDefinitionResolver.java:121) at org.eclipse.tycho.p2.target.TargetDefinitionResolver.resolveContent (TargetDefinitionResolver.java:94) at org.eclipse.tycho.p2.target.TargetDefinitionResolverService.resolveFromArguments (TargetDefinitionResolverService.java:70) at org.eclipse.tycho.p2.target.TargetDefinitionResolverService.getTargetDefinitionContent (TargetDefinitionResolverService.java:60) at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.resolveTargetDefinitions (TargetPlatformFactoryImpl.java:214) at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:155) at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:128) at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform (TargetPlatformFactoryImpl.java:1) at org.eclipse.tycho.p2.manager.ReactorRepositoryManagerImpl.computePreliminaryTargetPlatform (ReactorRepositoryManagerImpl.java:84) at org.eclipse.tycho.p2.resolver.P2DependencyResolver.computePreliminaryTargetPlatform (P2DependencyResolver.java:226) at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject (DefaultTychoResolver.java:110) at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead (TychoMavenLifecycleParticipant.java:95) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:264) at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192) at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105) at org.apache.maven.cli.MavenCli.execute (MavenCli.java:956) at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:288) at org.apache.maven.cli.MavenCli.main (MavenCli.java:192) at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke (Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282) at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406) at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347) FWIW, I accidentally discovered this when I gave <servers> <server> <id>https://download.eclipse.org/releases/oxygen</id> <configuration> <timeout>120000</timeout> </configuration> </server> </servers> a try, hoping that it would give me the same interface to configure timeouts than plain Maven.
Eclipse Tycho is moving away from this bugs.eclipse.org issue tracker to https://github.com/eclipse/tycho/issues/ instead. If this issue is relevant to you, your action is required. 0. Verify this issue is still happening with latest Tycho 2.4.0-SNAPSHOT if issue has disappeared, please change status of this issue to "CLOSED WORKFORME" with some details about your testing environment and how you did verify the issue; and you're done if issue is still present when latest release: * Create a new issue at https://github.com/eclipse/tycho/issues/ ** Use as title in GitHub the title of this Bugzilla ticket (may include the bug number or not, at your own convenience) ** In the GitHub description, start with a link to this bugzilla ticket ** Optionally add new content to the description if it can helps towards resolution ** Submit GitHub issue * Update bugzilla ticket ** Add to "See also" property (up right column) the link to the newly created GitHub issue ** Add a comment "Migrated to <link-to-newly-created-GitHub-issue>" ** Set status as CLOSED MOVED ** Submit All issues that remain open will be automatically closed next week or so. Then the Bugzilla component for Tycho will be archived and made read-only.
