Hi,
     I am developing Xwiki from source code. I am using maven-2.1-SNAPSHOT to build xwiki.
       Also using  Linux,java1.6. While building I have came across following  Exception...

   ignu@sixteen :~/xwiki_build/xwiki_src/trunks-users/xwiki-product-enterprise/distribution-test$ mvn install
[INFO] Scanning for projects...
[INFO] Reactor build order:
[INFO]   XWiki Products - Enterprise - Functional Tests
[INFO]   XWiki Products - Enterprise - Functional XMLRPC Tests
[INFO]   XWiki Products - Enterprise - Functional Selenium Tests
[INFO] ----------------------------------------------------------------------------
[INFO] Building XWiki Products - Enterprise - Functional Tests
[INFO]    task-segment: [install]
[INFO] ----------------------------------------------------------------------------
[INFO] [site:attach-descriptor]
[INFO] [install:install]
[INFO] Installing /media/sda6/xwiki_build/xwiki_src/trunks-users/xwiki-product-enterprise/distribution-test/pom.xml to /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise-test/1.2-SNAPSHOT/xwiki- enterprise-test-1.2-SNAPSHOT.pom
[INFO] ----------------------------------------------------------------------------
[INFO] Building XWiki Products - Enterprise - Functional XMLRPC Tests
[INFO]    task-segment: [install]
[INFO] ----------------------------------------------------------------------------
Downloading: http://maven.xwiki.org/externals/groovy/groovy-all-1.0-jsr/06/groovy-all-1.0-jsr-06.pom
Downloading: http://maven.xwiki.org/releases/groovy/groovy-all-1.0-jsr/06/groovy-all-1.0-jsr-06.pom
Downloading: http://repo1.maven.org/maven2/groovy/groovy-all-1.0-jsr/06/groovy-all-1.0-jsr-06.pom
[INFO] [compiler:testCompile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [site:attach-descriptor]
[INFO] [dependency:unpack]
[INFO] Configured Artifact: com.xpn.xwiki.products:xwiki-enterprise:hsqldb:1.2-SNAPSHOT:zip
Downloading: http://maven.xwiki.org/snapshots/com/xpn/xwiki/products/xwiki-enterprise/1.2-SNAPSHOT/xwiki-enterprise-1.2-20070829.065345-93-hsqldb.zip
40645K downloaded
[INFO] Expanding: /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise/1.2-SNAPSHOT/xwiki- enterprise-1.2-SNAPSHOT-hsqldb.zip into /media/sda6/xwiki_build/xwiki_src/trunks-users/xwiki-product-enterprise/distribution-test/xmlrpc-tests/target
Downloading: http://maven.xwiki.org/externals/com/xpn/xwiki/platform/xwiki-core/1.2-SNAPSHOT/xwiki-core-1.2-20070829.053508-59.pom
Downloading: http://maven.xwiki.org/snapshots/com/xpn/xwiki/platform/xwiki-core/1.2-SNAPSHOT/xwiki-core-1.2-20070829.053508-59.pom
19K downloaded
[INFO] [surefire:test]
[INFO] Surefire report directory: /media/sda6/xwiki_build/xwiki_src/trunks-users/xwiki-product-enterprise/distribution-test/xmlrpc-tests/target/surefire-reports
org.apache.maven.surefire.booter.SurefireExecutionException: com.xpn.xwiki.it.xmlrpc.AllTests; nested exception is java.io.FileNotFoundException: /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise-wiki/1.2-SNAPSHOT/xwiki- enterprise-wiki-1.2-SNAPSHOT.xar (No such file or directory); nested exception is org.apache.maven.surefire.testset.TestSetFailedException: com.xpn.xwiki.it.xmlrpc.AllTests; nested exception is java.io.FileNotFoundException : /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise-wiki/1.2-SNAPSHOT/xwiki-enterprise-wiki-1.2-SNAPSHOT.xar (No such file or directory)
org.apache.maven.surefire.testset.TestSetFailedException: com.xpn.xwiki.it.xmlrpc.AllTests ; nested exception is java.io.FileNotFoundException: /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise-wiki/1.2-SNAPSHOT/xwiki-enterprise-wiki-1.2-SNAPSHOT.xar (No such file or directory)
java.io.FileNotFoundException : /home/ignu/.m2/repository/com/xpn/xwiki/products/xwiki-enterprise-wiki/1.2-SNAPSHOT/xwiki-enterprise-wiki-1.2-SNAPSHOT.xar (No such file or directory)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(FileInputStream.java:106)
        at java.io.FileInputStream.<init>(FileInputStream.java:66)
        at com.xpn.xwiki.it.xmlrpc.XhtmlValidityTest.readXarContents(XhtmlValidityTest.java :166)
        at com.xpn.xwiki.it.xmlrpc.XhtmlValidityTest.suite(XhtmlValidityTest.java:94)
        at com.xpn.xwiki.it.xmlrpc.AllTests.suite(AllTests.java:53)
        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.apache.maven.surefire.junit.JUnitTestSet.createInstanceFromSuiteMethod(JUnitTestSet.java:180)
        at org.apache.maven.surefire.junit.JUnitTestSet.constructTestObject (JUnitTestSet.java:140)
        at org.apache.maven.surefire.junit.JUnitTestSet.getTestCount(JUnitTestSet.java:247)
        at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.locateTestSets(AbstractDirectoryTestSuite.java :104)
        at org.apache.maven.surefire.Surefire.createSuiteFromDefinition(Surefire.java:150)
        at org.apache.maven.surefire.Surefire.run(Surefire.java:111)
        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.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:290)
        at org.apache.maven.surefire.booter.SurefireBooter.main (SurefireBooter.java:818)
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] There are test failures.
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 44 minutes 19 seconds
[INFO] Finished at: Wed Aug 29 14:02:36 IST 2007
[INFO] Final Memory: 10M/17M
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] ------------------------------------------------------------------------
[INFO] XWiki Products - Enterprise - Functional Tests ........ SUCCESS [ 0.665s]
[INFO] XWiki Products - Enterprise - Functional XMLRPC Tests . FAILED [44:18.231s]
[INFO] XWiki Products - Enterprise - Functional Selenium Tests  NOT BUILT
[INFO] ------------------------------------------------------------------------
[INFO] Error for project: XWiki Products - Enterprise - Functional XMLRPC Tests (during org.apache.maven.plugins:maven-surefire-plugin:2.3:test)
[INFO] ------------------------------------------------------------------------
[INFO] There are test failures.
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] BUILD ERRORS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 44 minutes 19 seconds
[INFO] Finished at: Wed Aug 29 14:02:36 IST 2007
[INFO] Final Memory: 10M/17M
[INFO] ------------------------------------------------------------------------
FATAL ERROR: Unable to configure the Maven application

--
Dinesh P. Chothe
INDICTRANS
                              Computing in Indian Languages

Mobile : +91 9850076045
Email :  chothe.dinesh@gmail.com