Issues with Maven 2, Cargo and Jetty

I'm able to run "mvn jetty:run-war" just fine in my project.  However, when I try to use Cargo with Jetty, I get the following error:

:WARN:  failed ContextHandler@627d08{/mywebapp,file:/private/tmp/Jetty__mywebapp/webapp/}
:INFO:  Extract jar:file:/private/tmp/cargo/conf/cargocpc.war!/ to /tmp/Jetty__cargocpc/webapp
:INFO:  Started SelectChannelConnector @ 0.0.0.0:8888
:WARN:  failed Server@171151
Exception in thread "Thread-1" org.codehaus.cargo.container.ContainerException: Failed to start the Jetty container
        at org.codehaus.cargo.container.jetty.internal.JettyExecutorThread.run(JettyExecutorThread.java :102)
Caused by: java.lang.reflect.InvocationTargetException
        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:585)
        at org.codehaus.cargo.container.jetty.internal.JettyExecutorThread.run (JettyExecutorThread.java:68)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of ' org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log ' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of ' org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log ' visible, which is not allowed.))
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java :235)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
        at org.apache.jasper.servlet.JspServlet .<init>(JspServlet.java:58)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
        at java.lang.Class.newInstance0 (Class.java:350)
        at java.lang.Class.newInstance(Class.java:303)
        at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:118)
        at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java :231)
        at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:37)
        at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:563)
        at org.mortbay.jetty.webapp.WebAppContext.startContext (WebAppContext.java:962)
        at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:341)
        at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:368)
        at org.mortbay.component.AbstractLifeCycle.start (AbstractLifeCycle.java:37)
        at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:133)
        at org.mortbay.jetty.Server.doStart(Server.java:246)
        at org.mortbay.component.AbstractLifeCycle.start (AbstractLifeCycle.java:37)
        ... 5 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of ' org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log ' visible, which is not allowed.)

Here's my profile that enables Cargo + Jetty:

<profiles>
        <profile>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.codehaus.cargo</groupId>
                        <artifactId>cargo-maven2-plugin</artifactId>
                        <configuration>
                            <wait>${cargo.wait}</wait>
                            <container>
                                <containerId>jetty6x</containerId>
                                <type>embedded</type>
                            </container>
                            <configuration>
                                <properties>
                                    <cargo.hostname>${cargo.host}</cargo.hostname>
                                    <cargo.servlet.port>${cargo.port}</cargo.servlet.port>
                                </properties>
                            </configuration>
                        </configuration>
                        <executions>
                            <execution>
                                <id>start-container</id>
                                <phase>pre-integration-test</phase>
                                <goals>
                                    <goal>start</goal>
                                </goals>
                            </execution>
                            <execution>
                                <id>stop-container</id>
                                <phase>post-integration-test</phase>
                                <goals>
                                    <goal>stop</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>

Any ideas?

Thanks,

Matt

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