CVS HEAD broken: dom4j not found in classpath

An attempt to bootstrap the build fails like so:

[echo] ------------------------------------------------------------------
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[echo] | C O M P I L I N G M A V E N S O U R C E S U S I N G A N T |
[echo] | |
[echo] ------------------------------------------------------------------
[mkdir] Created dir: /home/sam/minfrin/src/maven/maven/bootstrap/phase1-classes
[javac] Compiling 87 source files to /home/sam/minfrin/src/maven/maven/bootstrap/phase1-classes
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/project/Project.java:73: package org.dom4j does not exist
[javac] import org.dom4j.Document;
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/project/Project.java:74: package org.dom4j.io does not exist
[javac] import org.dom4j.io.SAXReader;
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/project/Project.java:1207: cannot resolve symbol
[javac] symbol : class Document
[javac] location: class org.apache.maven.project.Project
[javac] public Document createDocument()
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/project/Project.java:1210: cannot resolve symbol
[javac] symbol : class SAXReader
[javac] location: class org.apache.maven.project.Project
[javac] SAXReader reader = new SAXReader();
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/project/Project.java:1210: cannot resolve symbol
[javac] symbol : class SAXReader
[javac] location: class org.apache.maven.project.Project
[javac] SAXReader reader = new SAXReader();
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/MavenUtils.java:363: cannot access org.dom4j.io.XMLWriter
[javac] file org/dom4j/io/XMLWriter.class not found
[javac] XMLOutput output = XMLOutput.createXMLOutput( writer );
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/jelly/tags/maven/WerkzDependencyResolver.java:257: org.apache.maven.jelly.tags.maven.ListAddAction should be declared abstract; it does not define performAction(com.werken.werkz.Session) in org.apache.maven.jelly.tags.maven.ListAddAction
[javac] class ListAddAction implements Action
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/jelly/tags/maven/WerkzDependencyResolver.java:281: org.apache.maven.jelly.tags.maven.DummyAction should be declared abstract; it does not define performAction(com.werken.werkz.Session) in org.apache.maven.jelly.tags.maven.DummyAction
[javac] class DummyAction implements Action
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/DefaultProjectMarshaller.java:113: marshallProperties(java.util.Map) in org.apache.maven.DefaultProjectMarshaller cannot be applied to (java.util.List)
[javac] marshallProperties( project.getProperties() );
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/DefaultProjectMarshaller.java:372: marshallProperties(java.util.Map) in org.apache.maven.DefaultProjectMarshaller cannot be applied to (java.util.List)
[javac] marshallProperties( dependency.getProperties() );
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/DefaultProjectUnmarshaller.java:367: setProperties(java.util.List) in org.apache.maven.project.BaseObject cannot be applied to (java.util.Map)
[javac] d.setProperties( unmarshallProperties( parser ) );
[javac] ^
[javac] /home/sam/minfrin/src/maven/maven/src/java/org/apache/maven/DefaultProjectUnmarshaller.java:549: setProperties(java.util.List) in org.apache.maven.project.BaseObject cannot be applied to (java.util.Map)
[javac] project.setProperties( unmarshallProperties( parser ) );
[javac] ^
[javac] 12 errors

BUILD FAILED
file:/home/sam/minfrin/src/maven/maven/build-bootstrap.xml:97: Compile failed; see the compiler error output for details.

Total time: 9 minutes 8 seconds