regression in repository assembly

I get this error in 2.2-beta-1:

[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] org.apache.maven.plugin.assembly.archive.phase.wrappers.GroupVersionAlignmentWrapper
[INFO] ------------------------------------------------------------------------
[DEBUG] Trace
java.lang.ClassCastException: org.apache.maven.plugin.assembly.archive.phase.wrappers.GroupVersionAlignmentWrapper
at org.apache.maven.shared.repository.DefaultRepositoryAssembler.createGroupVersionAlignments(DefaultRepositoryAssembler.java:439)
at org.apache.maven.shared.repository.DefaultRepositoryAssembler.buildRemoteRepository(DefaultRepositoryAssembler.java:121)
at org.apache.maven.plugin.assembly.archive.phase.RepositoryAssemblyPhase.execute(RepositoryAssemblyPhase.java:68)
at org.apache.maven.plugin.assembly.archive.DefaultAssemblyArchiver.createArchive(DefaultAssemblyArchiver.java:98)
at org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:278)

Descriptor:
<assembly>
<id>bin</id>
<formats>
<format>tar.gz</format>
</formats>
<repositories>
<repository>
<outputDirectory>repository/releases</outputDirectory>
<includeMetadata>true</includeMetadata>
<groupVersionAlignments>
<groupVersionAlignment>
<id>org.apache.maven</id>
<version>2.0.5-maestro-$

</version>
<excludes>
<exclude>maven-plugin-surrogate-parent</exclude>
<exclude>maven-archetype</exclude>
<exclude>maven-archetype-core</exclude>
<exclude>maven-archiver</exclude>
<exclude>maven-parent</exclude>
<exclude>maven-jxr</exclude>
<exclude>maven-plugin-tools-java</exclude>
<exclude>maven-plugin-tools-beanshell</exclude>
<exclude>maven-plugin-tools-api</exclude>
<exclude>maven-plugin-tools</exclude>
</excludes>
</groupVersionAlignment>
</groupVersionAlignments>
</repository>
</repositories>
</assembly>