I have a workspace that references a symlink. When an svn update occurs, svn
externals fail with an error like this:

ERROR: Failed to parse svn info for external
http://10.1.42.211/svn/textura/lib/j4j/1.0 at
portal/home/tomcat/hudson/workspace/portal/lib//j4j
org.tmatesoft.svn.core.SVNException: svn:
'/opt/cpms/hudson/workspace/portal/home/tomcat/hudson/workspace/portal/lib' is
not a working copy
at
org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:64)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNAdminAreaFactory.open(SVNAdminAreaFactory.java:149)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.doOpen(SVNWCAccess.java:355)
at org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.open(SVNWCAccess.java:263)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.probeOpen(SVNWCAccess.java:290)
at
org.tmatesoft.svn.core.internal.wc.admin.SVNWCAccess.probeOpen(SVNWCAccess.java:275)
at org.tmatesoft.svn.core.wc.SVNWCClient.crawlEntries(SVNWCClient.java:3027)
at org.tmatesoft.svn.core.wc.SVNWCClient.doInfo(SVNWCClient.java:2271)
at org.tmatesoft.svn.core.wc.SVNWCClient.doInfo(SVNWCClient.java:2647)
at hudson.scm.SubversionSCM$BuildRevisionMapTask.invoke(SubversionSCM.java:780)
at hudson.scm.SubversionSCM$BuildRevisionMapTask.invoke(SubversionSCM.java:750)
at hudson.FilePath.act(FilePath.java:552)
at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:426)
at hudson.model.AbstractProject.checkout(AbstractProject.java:807)
at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:314)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:266)
at hudson.model.Run.run(Run.java:923)
at hudson.model.Build.run(Build.java:112)
at hudson.model.ResourceController.execute(ResourceController.java:93)
at hudson.model.Executor.run(Executor.java:119)