p2.director install script is finding non-IU IUs to install

eclipse.buildId
java.version

list.ius:
     [echo] Searching for IUs in http://download.jboss.org/jbosstools/targetplatforms/jbosstoolstarget/4.50.0.Alpha2-SNAPSHOT/REPO/,http://download.jboss.org/jbosstools/mars/snapshots/builds/_composite_/core/master with -list 'Q:everything.select(y | everything.select(x | x.properties ~= filter("(org.eclipse.equinox.p2.bundle.localization='plugin')")).collect(x | x.requirements).flatten().exists(r | y ~= r))' ...

     [echo] Result: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
     [echo] IU list written to /qa/hudson_workspace/workspace/jbosstools-composite-install_master/data/plugin.list.properties

!SESSION 2015-03-13 18:06:15.934 -----------------------------------------------
eclipse.buildId=4.5.0.I20150203-1300
java.version=1.8.0_40
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US

!ENTRY org.eclipse.osgi 4 0 2015-03-13 18:06:17.233
!MESSAGE The -clean (osgi.clean) option was not successful. Unable to clean the storage area: /qa/hudson_workspace/workspace/jbosstools-composite-install_master/eclipse/configuration/org.eclipse.osgi
org.eclipse.m2e.logback.configuration: The org.eclipse.m2e.logback.configuration bundle was activated before the state location was initialized.  Will retry after the state location is initialized.
ch.qos.logback.classic=1.0.7.v20121108-1250
ch.qos.logback.core=1.0.7.v20121108-1250
...
tern.server.nodejs=0.9.0.201502141213
ternjs=0.9.0.201502141213
Operation completed in 183432 ms.