[m2e-users] Where does System.err of Maven plugin go?

[ilya Basin <basinilya@xxxxxxxxx>]

Hi List.
I'm trying to debug the error (not reproducible with command line maven):

    JAXB errors arose while SchemaGen compiled sources to XML. (org.codehaus.mojo:jaxb2-maven-plugin:2.3.1:schemagen:schemagen:generate-resources)
    
    org.apache.maven.plugin.MojoExecutionException: JAXB errors arose while SchemaGen compiled sources to XML.
    	at org.codehaus.mojo.jaxb2.schemageneration.AbstractXsdGeneratorMojo.performExecution(AbstractXsdGeneratorMojo.java:385)

According to
https://github.com/mojohaus/jaxb2-maven-plugin/blob/a52f6c270f28753b4d92b71e36e629ad2c3a7ad8/src/main/java/org/codehaus/mojo/jaxb2/schemageneration/AbstractXsdGeneratorMojo.java#L411
it calls com.sun.tools.jxc.SchemaGenerator.run()

and according to the decompilation of SchemaGenerator$Runner it should print the errors to System.err before returning false:

/* 243 */       boolean res = task.call().booleanValue();
/*     */       
/* 245 */       for (Diagnostic<? extends JavaFileObject> d : diagnostics.getDiagnostics()) {
/* 246 */         System.err.println(d.toString());
/*     */       }
/* 248 */       return res;


I tried to run eclipsec.exe and I also checked the .log file in the Eclipse Workspace, but nothing is printed there. I also attached a debugger ti Eclipse, but the main Eclipse process doesn't load the above classes. Looks like m2e forks.