This is due to some process already present. What else runs on this testsuite box?
 
modify-cluster-stack:

modify-cluster-stack:
[server:start] Starting server "cluster-UDP-0" with command:
[server:start] /opt/j2sdk1.4.2_09/bin/java -cp /services/cruisecontrol/checkout/jboss-4.0-testsuite-sun-1.4/build/output/jboss-4.0.5.CR1/bin/run.jar:/opt/j2sdk1.4.2_09/lib/tools.jar  org.jboss.Main -c cluster-UDP-0 -b localhost

BUILD FAILED
/services/cruisecontrol/checkout/jboss-4.0-testsuite-sun-1.4/testsuite/build.xml:792: The following error occurred while executing this line:
/services/cruisecontrol/checkout/jboss-4.0-testsuite-sun-1.4/testsuite/build.xml:1049: The following error occurred while executing this line:
/services/cruisecontrol/checkout/jboss-4.0-testsuite-sun-1.4/testsuite/build.xml:1071: Error starting server "cluster-UDP-1": Found a process already listening on:http://build01-01.pri:8080 or jnp://build01-01.pri:1099

Total time: 65 minutes 49 seconds
Found server "cluster-UDP-0" still running; stopping it.
Shutting down server: cluster-UDP-0

From: qa@jboss.com [mailto:qa@jboss.com]
Sent: Thursday, August 31, 2006 9:21 AM
To: Dimitris Andreadis; jboss-development@lists.jboss.org; QA
Subject: jboss-4.0-testsuite-sun-1.4 Build Failed
Importance: High

View results here -> http://cruisecontrol.jboss.com/cc/buildresults/jboss-4.0-testsuite-sun-1.4?log=log20060831004115

BUILD FAILED
Ant Error Message: /services/cruisecontrol/work/scripts/build-jboss-common.xml:242: The following error occurred while executing this line: /services/cruisecontrol/work/scripts/build-jboss-common.xml:156: Exit code: 1 See tests.log in Build Artifacts for details.
Date of build: 08/31/2006 00:41:15
Time to build: 97 minutes 30 seconds
Last changed: 08/30/2006 12:00:41
Last log entry: First pass of the 4.0.5.CR1 release notes. Need to update the compatibility and configuration section.

 Unit Tests: (0)  Total Errors and Failures: (0)
 

 Modifications since last build:  (first 50 of 1)
56446 modified dimitris@jboss.org //branches/Branch_4_0/build/docs/readme.html First pass of the 4.0.5.CR1 release notes. Need to update the compatibility and configuration section.