Erro ao carregar aplicação web com o vraptor com o maven e o tomcat7

Galera estou com um erro ao iniciar minha aplicação web, alguem poderia me ajudar?

estou utilizando o vraptor com o tomcat7 e o maven.

Oct 9, 2011 11:56:53 AM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter vraptor
br.com.caelum.vraptor.scan.ScannerException: Could not scan WEB-INF/classes
at br.com.caelum.vraptor.scan.ScannotationComponentScanner.scanWebInfClasses(ScannotationComponentScanner.java:74)
at br.com.caelum.vraptor.scan.ScannotationComponentScanner.scan(ScannotationComponentScanner.java:57)
at br.com.caelum.vraptor.scan.WebAppBootstrapFactory.create(WebAppBootstrapFactory.java:65)
at br.com.caelum.vraptor.ioc.spring.SpringProvider.start(SpringProvider.java:83)
at br.com.caelum.vraptor.VRaptor.init(VRaptor.java:110)
at br.com.caelum.vraptor.VRaptor.init(VRaptor.java:103)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:115)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4001)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4651)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.startup.Embedded.start(Embedded.java:825)
at org.codehaus.mojo.tomcat.AbstractRunMojo.startContainer(AbstractRunMojo.java:558)
at org.codehaus.mojo.tomcat.AbstractRunMojo.execute(AbstractRunMojo.java:255)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: java.io.FileNotFoundException: /home/marcos/Java/workspace/portal/src/main/webapp/WEB-INF/classes (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.(FileInputStream.java:137)
at java.io.FileInputStream.(FileInputStream.java:96)
at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:87)
at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:178)
at java.net.URL.openStream(URL.java:1029)
at org.scannotation.archiveiterator.FileProtocolIteratorFactory.create(FileProtocolIteratorFactory.java:23)
at org.scannotation.archiveiterator.IteratorFactory.create(IteratorFactory.java:40)
at org.scannotation.AnnotationDB.scanArchives(AnnotationDB.java:291)
at br.com.caelum.vraptor.scan.ScannotationComponentScanner.scanWebInfClasses(ScannotationComponentScanner.java:71)
… 38 more

Segue abaixo meu pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>br.com.portal</groupId>
	<artifactId>portal</artifactId>
	<packaging>war</packaging>
	<version>1.0-SNAPSHOT</version>
	<name>portal Maven Webapp</name>
	<url>http://maven.apache.org</url>
	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.validation</groupId>
			<artifactId>validation-api</artifactId>
			<version>1.0.0.GA</version>
		</dependency>
		<dependency>
			<groupId>taglibs</groupId>
			<artifactId>standard</artifactId>
			<version>1.1.2</version>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>br.com.caelum</groupId>
			<artifactId>vraptor</artifactId>
			<version>3.4.0</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate</artifactId>
			<version>3.2.7.ga</version>
			<exclusions>
				<exclusion>
					<groupId>asm</groupId>
					<artifactId>asm</artifactId>
				</exclusion>
				<exclusion>
					<groupId>asm</groupId>
					<artifactId>asm-attrs</artifactId>
				</exclusion>
				<exclusion>
					<groupId>cglib</groupId>
					<artifactId>cglib</artifactId>
				</exclusion>
				<exclusion>
					<groupId>net.sf.ehcache</groupId>
					<artifactId>ehcache</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>javax.transaction</groupId>
			<artifactId>jta</artifactId>
			<version>1.1</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-annotations</artifactId>
			<version>3.2.1.ga</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-validator</artifactId>
			<version>4.0.2.GA</version>
		</dependency>
	</dependencies>
	<build>
		<finalName>portal</finalName>
		<directory>${project.basedir}/target</directory>
		<outputDirectory>${project.build.directory}/WEB-INF/classes</outputDirectory>
		<plugins>
			<plugin>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>1.6</source>
					<target>1.6</target>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-resources-plugin</artifactId>
				<configuration>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-eclipse-plugin</artifactId>
				<inherited>true</inherited>
				<configuration>
					<classpathContainers>
						<classpathContainer>org.eclipse.jdt.launching.JRE_CONTAINER</classpathContainer>
						<classpathContainer>org.eclipse.jdt.USER_LIBRARY/TOMCAT_7.0.21_LIBRARY</classpathContainer>
					</classpathContainers>
				</configuration>
			</plugin>
		</plugins>
	</build>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>
</project>