Hi, I'm attempting to build an apache project (jetspeed) using maven. The build throws a org.apache.maven.usability.MojoExecutionExceptionDiagnoser exception. The exception has no meaningful documentation nor does it appear on the maven mailing lists.
Can anyone suggest what may have caused the exception? Here's a snipped copy of the build output: $ mvn -e -P tomcat,min + Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] Reactor build order: [INFO] jetexpress Portal ... [snip/] ... Downloading: javax/activation/activation/1.0.2/activation-1.0.2.jar [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] An Ant BuildException has occured: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:300: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:305: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:505: java.lang.ClassCastException: org.apache.maven.usability.MojoExecutionExceptionDiagnoser cannot be cast to org.apache.maven.usability.diagnostics.ErrorDiagnoser [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: An Ant BuildException has occured: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:300: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:305: The following error occurred while executing this line: /home/paul/src/jetspeed-training/jetexpress/etc/build.xml:505: java.lang.ClassCastException: org.apache.maven.usability.MojoExecutionExceptionDiagnoser cannot be cast to org.apache.maven.usability.diagnostics.ErrorDiagnoser at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:564) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:333) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:126) at org.apache.maven.cli.MavenCli.main(MavenCli.java:282) 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) Caused by: org.apache.maven.plugin.MojoExecutionException: An Ant BuildException has occured: The following error occurred while executing this line: ... [snip/] ... ... 41 more Caused by: java.lang.ClassCastException: org.apache.maven.usability.MojoExecutionExceptionDiagnoser cannot be cast to org.apache.maven.usability.diagnostics.ErrorDiagnoser at org.apache.maven.usability.diagnostics.ErrorDiagnostics.diagnose(ErrorDiagnostics.java:75) at org.apache.maven.artifact.ant.AbstractArtifactTask.diagnoseError(AbstractArtifactTask.java:382) at org.apache.maven.artifact.ant.AbstractArtifactTask.execute(AbstractArtifactTask.java:455) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275) at org.apache.tools.ant.Task.perform(Task.java:364) ... 47 more [INFO] ------------------------------------------------------------------------ [INFO] Total time: 34 seconds [INFO] Finished at: Tue Aug 05 17:37:18 BST 2008 [INFO] Final Memory: 16M/36M [INFO] ------------------------------------------------------------------------ Thanks, Paul. -- View this message in context: http://www.nabble.com/Mysterious-exception-tp18835604p18835604.html Sent from the Maven - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]