As of right now (4/11/13 4:52 PM EDT), I'm not able to build master branch of openstack-compute-admin (495aae257ebc0b99213e52e602375e9b4d73957c):
[(master) lorin@nibbler ~/openstack-manuals/doc/src/docbkx/openstack-compute-admin]
$ mvn clean generate-sources
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building OpenStack Guides 1.0.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ openstack-guide ---
[INFO] Deleting /Users/lorin/openstack-manuals/doc/src/docbkx/openstack-compute-admin/target
[INFO]
[INFO] --- clouddocs-maven-plugin:1.7.2:generate-webhelp (generate-webhelp) @ openstack-guide ---
[INFO] Processing input file: bk-compute-adminguide.xml
[WARNING] Property not found in com.agilejava.docbkx.maven.DocbkxWebhelpMojo
[WARNING] Property not found in com.agilejava.docbkx.maven.DocbkxWebhelpMojo
[INFO]
************************************* START: Automatically generating PDF for WEBHELP *************************************
[debug] Using stylesheet: jar:file:/Users/lorin/.m2/repository/com/rackspace/cloud/api/clouddocs-maven-plugin/1.7.2/clouddocs-maven-plugin-1.7.2.jar!/cloud/fo/docbook.xsl
Message: Validating post-xinclude
Message: Fixing pubdate if necessary
Apr 11, 2013 4:53:13 PM com.xmlcalabash.util.DefaultXProcMessageListener info
INFO: 261:44:
@@@@@@@@@@@@@@@@@@@@@@
!!!VALIDATION ERRORS!!
!!!!!!!!!!!!!!!!!!!!!!
<c:errors xmlns:c="http://www.w3.org/ns/xproc-step">
<c:error line="12282" column="15">org.xml.sax.SAXParseException: element "para" not allowed yet; expected element "info", "subtitle", "title" or "titleabbrev"</c:error>
</c:errors>
!!!!!!!!!!!!!!!!!!!!!!
!!!VALIDATION ERRORS!!
@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Control whether build fails or not by
setting failOnValidationError to no
in your pom.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Apr 11, 2013 4:53:13 PM com.xmlcalabash.util.DefaultXProcMessageListener info
INFO: 261:44:
Apr 11, 2013 4:53:13 PM com.xmlcalabash.util.DefaultXProcMessageListener error
SEVERE: Processing terminated by xsl:message at line -1 in
Apr 11, 2013 4:53:13 PM com.xmlcalabash.util.DefaultXProcMessageListener error
SEVERE: Processing terminated by xsl:message at line -1 in
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 9.115s
[INFO] Finished at: Thu Apr 11 16:53:13 EDT 2013
[INFO] Final Memory: 23M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.rackspace.cloud.api:clouddocs-maven-plugin:1.7.2:generate-webhelp (generate-webhelp) on project openstack-guide: Execution generate-webhelp of goal com.rackspace.cloud.api:clouddocs-maven-plugin:1.7.2:generate-webhelp failed: net.sf.saxon.s9api.SaxonApiException: Processing terminated by xsl:message at line -1 in -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
I can reproduce.