Source building -> Bundle ant with release fails

Upon executing custom goal jira:release-professional I receive the following error:

BUILD FAILED
File...... D:\java_src\webapps\jira\atlassian-jira-professional-3.3-source\jira\maven.xml
Element... copy
Line...... 845
Column.... 93
D:\ant- not found.

The lines in the maven.xml are:

<!--Bundle ant with release -->
<copy preservelastmodified="true" todir="${maven.build.dir}/release/tools/ant/">
<fileset dir="${ant.location}/ant-${ant.version}"/>
</copy>

The directory tree "release/tools/ant" are not created.