ServletContainerInitializer fails on OSGi web bundles

Caused by: java.lang.ClassNotFoundException: com.sun.faces.config.FacesInitializer from BaseClassLoader@75d228{OSGiClassLoaderPolicy@1386c70{name=vfsmemory://3j001-7jvok0-g2fufn3d-1-g2fuhkof-b7/ domain=OSGiClassLoaderDomain@1cb3087{name=OSGiClassLoaderDomain parentPolicy=(before=[javax.imageio, javax.imageio.stream, javax.management, javax.management.openmbean, javax.management.remote, javax.naming, javax.naming.event, javax.naming.spi, javax.net, javax.net.ssl, javax.xml.datatype, javax.xml.namespace, javax.xml.parsers, javax.xml.transform, javax.xml.transform.dom, javax.xml.transform.sax, javax.xml.transform.stream, javax.xml.validation, org.apache.log4j, org.jboss.beans.metadata.plugins.builder, org.jboss.beans.metadata.plugins, org.jboss.beans.metadata.spi.builder, org.jboss.beans.metadata.spi, org.jboss.dependency.spi, org.jboss.kernel.spi.dependency, org.jboss.logging, org.jboss.osgi.deployment.deployer, org.jboss.osgi.deployment.interceptor, org.jboss.osgi.microcontainer, org.jboss.osgi.spi.capability, org.jboss.osgi.spi.framework, org.jboss.osgi.spi.management, org.jboss.osgi.spi.service, org.jboss.osgi.spi.util, org.jboss.osgi.spi, org.jboss.util, org.jboss.util.collection, org.jboss.util.propertyeditor, org.jboss.util.xml, org.jboss.virtual, org.jnp.interfaces, org.jnp.server, org.osgi.framework, org.osgi.framework.launch, org.osgi.service.packageadmin, org.osgi.service.startlevel, org.slf4j, org.w3c.dom, org.w3c.dom.bootstrap, org.w3c.dom.events, org.w3c.dom.ls, org.w3c.dom.ranges, org.w3c.dom.traversal, org.w3c.dom.views, org.xml.sax, org.xml.sax.ext, org.xml.sax.helpers] <INCLUDE_JAVA> after=<NOTHING>) parent=BaseClassLoader@270664{vfsfile:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-6.0.0-SNAPSHOT/server/default/deployers/osgi.deployer/}} roots=[MemoryContextHandler@22501048[path= context=vfsmemory://3j001-7jvok0-g2fufn3d-1-g2fuhkof-b7 real=vfsmemory://3j001-7jvok0-g2fufn3d-1-g2fuhkof-b7], DelegatingHandler@16675513[path= context=file:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-osgi/testsuite/example/target/test-libs/example-webapp.war real=vfszip:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-osgi/testsuite/example/target/test-libs/example-webapp.war], ZipEntryHandler@18745501[path=WEB-INF/classes context=file:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-osgi/testsuite/example/target/test-libs/example-webapp.war real=file:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-osgi/testsuite/example/target/test-libs/example-webapp.war/WEB-INF/classes]] delegates=[FilteredDelegateLoader@c77d04{delegate=VFSClassLoaderPolicy@14a8f44{vfsfile:/home/hudson/workspace/hudson/jboss-osgi/hudson-home/jobs/jbossosgi-jdk16/workspace/jboss-6.0.0-SNAPSHOT/server/default/conf/jboss-service.xml}}, FilteredDelegateLoader@e0a686{delegate=OSGiClassLoaderPolicy@967e07{vfsmemory://3j001-7jvok0-g2fufn3d-1-g2fugg46-2w/}}, FilteredDelegateLoader@d4c8b0{delegate=OSGiClassLoaderPolicy@f26dd8{vfsmemory://3j001-7jvok0-g2fufn3d-1-g2fugg4a-2x/}}] exported=[]}}
at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:448)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at org.jboss.web.deployers.ServletContainerInitializerDeployer.loadSci(ServletContainerInitializerDeployer.java:214)
at org.jboss.web.deployers.ServletContainerInitializerDeployer.deploy(ServletContainerInitializerDeployer.java:111)
at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1440)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1158)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1099)