neon build - Unable to read repository at http://download.eclipse.org/releases/neon/201705151400. Input is not in the XZ forma

[paulvi]

Using version 1.0.0-SNAPSHOT (see #21) when generating, updating to tycho 1.0.0
works for luna, but fails for neon

  <repositories>
    <repository>
      <id>neon</id>
      <layout>p2</layout>
      <url>http://download.eclipse.org/releases/neon</url>
    </repository>
  </repositories>

output

D:\Workspaces\GitHub\buildmaster-ide\bmi-neon-tycho1>mvn package
[INFO] Scanning for projects...
[WARNING] No explicit target runtime environment configuration. Build is platform dependent.
[WARNING] No explicit target runtime environment configuration. Build is platform dependent.
[WARNING] No explicit target runtime environment configuration. Build is platform dependent.
[WARNING] No explicit target runtime environment configuration. Build is platform dependent.
[INFO] Computing target platform for MavenProject: org.nodeclipse:bmi.core:1.0.0-SNAPSHOT @ D:\Workspaces\GitHub\buildmaster-ide\bmi-neon-tycho1\bmi.core\pom.xml
[INFO] Fetching p2.index from http://download.eclipse.org/releases/neon/
[INFO] Fetching p2.index from http://download.eclipse.org/releases/neon/
[INFO] Adding repository http://download.eclipse.org/releases/neon
[INFO] Fetching p2.index from http://download.eclipse.org/technology/epp/packages/neon/
[INFO] Fetching p2.index from http://download.eclipse.org/technology/epp/packages/neon/
[INFO] Fetching p2.index from http://download.eclipse.org/releases/neon/201705151400/
[INFO] Fetching p2.index from http://download.eclipse.org/releases/neon/201705151400/
[ERROR] Internal error: java.lang.RuntimeException: Failed to load p2 repository with ID 'neon' from location http://download.eclipse.org/releases/neon: Unable to read repository at http://download.eclipse.org/releases/neon. Unable to read repository at http://download.eclipse.org/releases/neon/201705151400. Input is not in the XZ format -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: Failed to load p2 repository with ID 'neon' from location http://download.eclipse.org/releases/neon
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:121)
        at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
        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:497)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
        at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
        at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
        at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: java.lang.RuntimeException: Failed to load p2 repository with ID 'neon' from location http://download.eclipse.org/releases/neon
        at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.loadMetadataRepository(TargetPlatformFactoryImpl.java:302)
        at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.gatherExternalInstallableUnits(TargetPlatformFactoryImpl.java:270)
        at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.createTargetPlatform(TargetPlatformFactoryImpl.java:176)
        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:223)
        at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject(DefaultTychoResolver.java:109)
        at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead(TychoMavenLifecycleParticipant.java:95)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:266)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
        ... 11 more
Caused by: org.eclipse.equinox.p2.core.ProvisionException: Unable to read repository at http://download.eclipse.org/releases/neon.
        at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepository.addChild(CompositeMetadataRepository.java:185)
        at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepository.<init>(CompositeMetadataRepository.java:106)
        at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepositoryFactory.load(CompositeMetadataRepositoryFactory.java:122)
        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:768)
        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:668)
        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
        at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:61)
        at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:53)
        at org.eclipse.tycho.p2.target.TargetPlatformFactoryImpl.loadMetadataRepository(TargetPlatformFactoryImpl.java:298)
        ... 22 more
Caused by: org.eclipse.equinox.p2.core.ProvisionException: Unable to read repository at http://download.eclipse.org/releases/neon/201705151400.
        at org.eclipse.equinox.internal.p2.metadata.repository.XZedSimpleMetadataRepositoryFactory.load(XZedSimpleMetadataRepositoryFactory.java:105)
        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.factoryLoad(MetadataRepositoryManager.java:57)
        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:768)
        at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.loadRepository(AbstractRepositoryManager.java:668)
        at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.loadRepository(MetadataRepositoryManager.java:96)
        at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:61)
        at org.eclipse.tycho.p2.remote.RemoteMetadataRepositoryManager.loadRepository(RemoteMetadataRepositoryManager.java:53)
        at org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepository.addChild(CompositeMetadataRepository.java:166)
        ... 31 more
Caused by: org.tukaani.xz.XZFormatException: Input is not in the XZ format
        at org.tukaani.xz.common.DecoderUtil.decodeStreamHeader(Unknown Source)
        at org.tukaani.xz.SingleXZInputStream.initialize(Unknown Source)
        at org.tukaani.xz.SingleXZInputStream.initialize(Unknown Source)
        at org.tukaani.xz.SingleXZInputStream.<init>(Unknown Source)
        at org.tukaani.xz.XZInputStream.<init>(Unknown Source)
        at org.tukaani.xz.XZInputStream.<init>(Unknown Source)
        at org.eclipse.equinox.internal.p2.metadata.repository.XZedSimpleMetadataRepositoryFactory.load(XZedSimpleMetadataRepositoryFactory.java:80)
        ... 38 more
[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/InternalErrorException

[beirtipol]

I've been getting that with Eclipse installations due to proxy settings / the mirror sites for Eclipse updates being unavailable. Check the URL in the error message - it's pointing to "http://download.eclipse.org/releases/neon/201705151400" being a dodgy update site

[paulvi]

If this were proxy related issue, it would have been for luna as well.