When trying to perform a release, it is prevented due to this error:

[INFO] Checking in modified POMs...
[INFO] Executing: /bin/sh -c cd /home/hudson/jobs/ambrosia-release/workspace/.
&& svn --username hudson@eoti.org --password '*****' --non-interactive commit
--file /var/tmp/maven-scm-1032009578.commit --targets
/var/tmp/maven-scm-3081196879516990925-targets
[INFO] Working directory: /home/hudson/jobs/ambrosia-release/workspace/.
[HUDSON] Archiving /home/hudson/jobs/ambrosia-release/workspace/./pom.xml to
/home/hudson/jobs/ambrosia-release/modules/org.eoti$ambrosia/builds/2009-07-30_01-15-19/archive/org.eoti/ambrosia/2.3-SNAPSHOT/pom.xml
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Unable to commit files
Provider message:
The svn command failed.
Command output:
svn: Commit failed (details follow):
svn: MKACTIVITY of '/svn/!svn/act/e613b2eb-b48c-ebe0-afb2-c35754859c84':
authorization failed: Could not authenticate to server: rejected Basic challenge
(http://ambrosia.googlecode.com)

[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 48 seconds
[INFO] Finished at: Thu Jul 30 01:16:10 PDT 2009
[INFO] Final Memory: 18M/217M
[INFO] ------------------------------------------------------------------------
ERROR: Processing failed due to a bug in the code. Please report this to
users@hudson.dev.java.net
java.lang.ClassCastException: hudson.plugins.googlecode.scm.GoogleCodeSCM cannot
be cast to hudson.scm.SubversionSCM
at
hudson.scm.SubversionChangeLogSet$LogEntry.preparePath(SubversionChangeLogSet.java:175)
at
hudson.scm.SubversionChangeLogSet$LogEntry.access$200(SubversionChangeLogSet.java:118)
at
hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:166)
at
hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:164)
at java.util.AbstractList$Itr.next(AbstractList.java:359)
at hudson.maven.FilteredChangeLogSet.<init>(FilteredChangeLogSet.java:61)
at hudson.maven.MavenBuild.getChangeSet(MavenBuild.java:163)
at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:199)
at hudson.tasks.MailSender.createEmptyMail(MailSender.java:313)
at hudson.tasks.MailSender.createFailureMail(MailSender.java:192)
at hudson.tasks.MailSender.getMail(MailSender.java:127)
at hudson.tasks.MailSender.execute(MailSender.java:81)
at hudson.maven.reporters.MavenMailer.end(MavenMailer.java:54)
at hudson.maven.MavenModuleSetBuild$Builder.end(MavenModuleSetBuild.java:600)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:404)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:271)
at hudson.model.Run.run(Run.java:949)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:252)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:116)
project=hudson.maven.MavenModuleSet@1be696c[ambrosia-release]
project.getModules()=[hudson.maven.MavenModule@ef2e7c[ambrosia-release/org.eoti:aegle],
hudson.maven.MavenModule@d4ff95[ambrosia-release/org.eoti:ambrosia],
hudson.maven.MavenModule@1d7a424[ambrosia-release/org.eoti:atropos],
hudson.maven.MavenModule@595420[ambrosia-release/org.eoti:clotho],
hudson.maven.MavenModule@a218a5[ambrosia-release/org.eoti:domovois],
hudson.maven.MavenModule@2f54[ambrosia-release/org.eoti:gaea],
hudson.maven.MavenModule@235085[ambrosia-release/org.eoti:homunculi],
hudson.maven.MavenModule@7b5617[ambrosia-release/org.eoti:kallisti],
hudson.maven.MavenModule@1510d96[ambrosia-release/org.eoti:lachesis],
hudson.maven.MavenModule@52fecf[ambrosia-release/org.eoti:loki],
hudson.maven.MavenModule@d6ee28[ambrosia-release/org.eoti:mimir],
hudson.maven.MavenModule@ad8bb4[ambrosia-release/org.eoti:moirae],
hudson.maven.MavenModule@1aef798[ambrosia-release/org.eoti:raijin],
hudson.maven.MavenModule@796bb3[ambrosia-release/org.eoti:seshat],
hudson.maven.MavenModule@13dd8[ambrosia-release/org.eoti:syrinx],
hudson.maven.MavenModule@18353cf[ambrosia-release/org.eoti:thoth],
hudson.maven.MavenModule@f37a62[ambrosia-release/org.eoti.maven.skins:ljod]]
project.getRootModule()=hudson.maven.MavenModule@d4ff95[ambrosia-release/org.eoti:ambrosia]
FATAL: hudson.plugins.googlecode.scm.GoogleCodeSCM cannot be cast to
hudson.scm.SubversionSCM
java.lang.ClassCastException: hudson.plugins.googlecode.scm.GoogleCodeSCM cannot
be cast to hudson.scm.SubversionSCM
at
hudson.scm.SubversionChangeLogSet$LogEntry.preparePath(SubversionChangeLogSet.java:175)
at
hudson.scm.SubversionChangeLogSet$LogEntry.access$200(SubversionChangeLogSet.java:118)
at
hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:166)
at
hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:164)
at java.util.AbstractList$Itr.next(AbstractList.java:359)
at hudson.maven.FilteredChangeLogSet.<init>(FilteredChangeLogSet.java:61)
at hudson.maven.MavenBuild.getChangeSet(MavenBuild.java:163)
at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:199)
at hudson.tasks.MailSender.createEmptyMail(MailSender.java:313)
at hudson.tasks.MailSender.createFailureMail(MailSender.java:192)
at hudson.tasks.MailSender.getMail(MailSender.java:127)
at hudson.tasks.MailSender.execute(MailSender.java:81)
at hudson.maven.reporters.MavenMailer.end(MavenMailer.java:54)
at hudson.maven.MavenModuleSetBuild$Builder.end(MavenModuleSetBuild.java:600)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:404)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:271)
at hudson.model.Run.run(Run.java:949)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:252)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:116)

Hudson ver. 1.317 (private-07/24/2009 04:09-kohsuke)