[m2e-users] java.util.ConcurrentModificationException while trying to ru

[Lars Vogel <lars.vogel@xxxxxxxxxxx>]

Hi,

I'm trying to follow the build instructions from:

https://github.com/eclipse-m2e/m2e-core/blob/master/CONTRIBUTING.md

But the following command fails with the exception below.

~/git/m2e-core/m2e-maven-runtime$ mvn install

Is this a temporary hiccup or are the instructions not up to date?

Best regards, Lars

[INFO]
[INFO] --- maven-bundle-plugin:4.2.1:bundle (default-bundle) @
org.eclipse.m2e.archetype.common ---
[ERROR] An internal error occurred
java.util.ConcurrentModificationException
    at java.util.TreeMap.callMappingFunctionWithCheck (TreeMap.java:742)
    at java.util.TreeMap.computeIfAbsent (TreeMap.java:558)
    at aQute.bnd.osgi.Jar.putResource (Jar.java:288)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:202)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:177)
    at java.nio.file.Files.walkFileTree (Files.java:2804)
    at aQute.bnd.osgi.Jar.buildFromDirectory (Jar.java:176)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:119)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:172)
    at org.apache.felix.bundleplugin.BundlePlugin.getOSGiBuilder
(BundlePlugin.java:604)
    at org.apache.felix.bundleplugin.BundlePlugin.buildOSGiBundle
(BundlePlugin.java:936)
    at org.apache.felix.bundleplugin.BundlePlugin.execute
(BundlePlugin.java:443)
    at org.apache.felix.bundleplugin.BundlePlugin.execute
(BundlePlugin.java:364)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute
(MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject
(LifecycleModuleBuilder.java:81)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
(SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    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:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:64)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:564)
    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)
Best regards, Lars

-- 
Eclipse Platform project co-lead
CEO vogella GmbH

Haindaalwisch 17a, 22395 Hamburg
Amtsgericht Hamburg: HRB 127058
Geschäftsführer: Lars Vogel, Jennifer Nerlich de Vogel
USt-IdNr.: DE284122352
Fax (040) 5247 6322, Email: lars.vogel@xxxxxxxxxxx, Web: http://www.vogella.com