build fails style check unless it's built clean

When building without the clean goal specified in maven, the leftover generated XML and Java files cause style check failures.

The XML files appear in the relevant "target/enunciate-scratch", "target/enunciate/generate", "target/enunciate/build" and "target/site/wsdocs" directories.

The java files appear in the "opendaylight/distribution/opendaylight/target/distribution.opendaylight-0.1.0-SNAPSHOT-osgipackage/opendaylight/work/Catalina" directory.

The following workaround destroys these files and then builds:
rm -rf ../../northbound/**/target/enunciate-scratch
rm -rf ../../northbound/**/target/enunciate/build
rm -rf ../../northbound/**/target/enunciate/generate
rm -rf ../../northbound/**/target/site/wsdocs
rm -rf ../../samples/northbound/**/target/enunciate-scratch
rm -rf ../../samples/northbound/**/target/enunciate/build
rm -rf ../../samples/northbound/**/target/enunciate/generate
rm -rf ../../samples/northbound/**/target/site/wsdocs
rm -rf ../../distribution/opendaylight/target/distribution.opendaylight-0.1.0-SNAPSHOT-osgipackage/opendaylight/work/Catalina
mvn install -DskipTests

For example see the log below:

.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:505:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:506:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:507:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:508:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:509:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:510:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:511:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/enunciate-scratch/enunciate13853624993500312034020/OSGI-OPT/src/org/osgi/util/xml/XMLParserActivator.java:512:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:4: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:5: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:9:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:10: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:10:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:11: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:11:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:12: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:12:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:15:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:16:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:17:1: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:20: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:20:72: Line contains a tab character.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:21: Line has trailing spaces.
.../opendaylight/northbound/topology/target/site/wsdocs/crossdomain.xml:21:71: Line contains a tab character.
Audit done.

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] sal ............................................... SUCCESS [3.638s]
[INFO] clustering.services ............................... SUCCESS [0.514s]
[INFO] configuration ..................................... SUCCESS [0.468s]
[INFO] topologymanager ................................... SUCCESS [0.534s]
[INFO] switchmanager ..................................... SUCCESS [0.464s]
[INFO] hosttracker ....................................... SUCCESS [0.385s]
[INFO] forwardingrulesmanager ............................ SUCCESS [0.517s]
[INFO] forwarding.staticrouting .......................... SUCCESS [0.360s]
[INFO] clustering.services-implementation ................ SUCCESS [1.539s]
[INFO] sal.implementation ................................ SUCCESS [0.311s]
[INFO] containermanager .................................. SUCCESS [0.307s]
[INFO] containermanager.implementation ................... SUCCESS [0.296s]
[INFO] commons.integrationtest ........................... SUCCESS [0.418s]
[INFO] clustering.services.integrationtest ............... SUCCESS [0.502s]
[INFO] clustering.stub ................................... SUCCESS [0.447s]
[INFO] clustering.test ................................... SUCCESS [0.453s]
[INFO] configuration.implementation ...................... SUCCESS [0.428s]
[INFO] protocol_plugins.stub ............................. SUCCESS [0.413s]
[INFO] switchmanager.implementation ...................... SUCCESS [0.422s]
[INFO] configuration.integrationtest ..................... SUCCESS [0.288s]
[INFO] net.sf.jung2 ...................................... SUCCESS [1.111s]
[INFO] routing.dijkstra_implementation ................... SUCCESS [0.386s]
[INFO] arphandler ........................................ SUCCESS [0.368s]
[INFO] forwardingrulesmanager.implementation ............. SUCCESS [0.395s]
[INFO] hosttracker.implementation ........................ SUCCESS [0.387s]
[INFO] forwardingrulesmanager.integrationtest ............ SUCCESS [0.386s]
[INFO] hosttracker.integrationtest ....................... SUCCESS [0.276s]
[INFO] hosttracker_new ................................... SUCCESS [0.397s]
[INFO] hosttracker_new.implementation .................... SUCCESS [1.024s]
[INFO] switchmanager.integrationtest ..................... SUCCESS [0.256s]
[INFO] statisticsmanager ................................. SUCCESS [0.468s]
[INFO] statisticsmanager.implementation .................. SUCCESS [0.380s]
[INFO] statisticsmanager.integrationtest ................. SUCCESS [0.262s]
[INFO] usermanager ....................................... SUCCESS [0.403s]
[INFO] usermanager.implementation ........................ SUCCESS [0.458s]
[INFO] security .......................................... SUCCESS [0.419s]
[INFO] OpenFlow Java ..................................... SUCCESS [0.562s]
[INFO] com.sun.jersey.jersey-servlet ..................... SUCCESS [0.199s]
[INFO] web ............................................... SUCCESS [0.466s]
[INFO] flows.web ......................................... SUCCESS [0.385s]
[INFO] devices.web ....................................... SUCCESS [0.319s]
[INFO] troubleshoot.web .................................. SUCCESS [0.311s]
[INFO] topology.web ...................................... SUCCESS [0.305s]
[INFO] commons.northbound ................................ SUCCESS [0.688s]
[INFO] topology.northbound ............................... FAILURE [0.931s]
[INFO] forwarding.staticrouting.northbound ............... SKIPPED
[INFO] statistics.northbound ............................. SKIPPED
[INFO] flowprogrammer.northbound ......................... SKIPPED
[INFO] hosttracker.northbound ............................ SKIPPED
[INFO] subnets.northbound ................................ SKIPPED
[INFO] switchmanager.northbound .......................... SKIPPED
[INFO] logging.bridge .................................... SKIPPED
[INFO] northbound.integrationtest ........................ SKIPPED
[INFO] protocol_plugins.openflow ......................... SKIPPED
[INFO] samples.simpleforwarding .......................... SKIPPED
[INFO] samples.loadbalancer .............................. SKIPPED
[INFO] samples.loadbalancer.northbound ................... SKIPPED
[INFO] concepts .......................................... SKIPPED
[INFO] distribution.opendaylight ......................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 25.672s
[INFO] Finished at: Fri Jul 05 16:49:22 CDT 2013
[INFO] Final Memory: 82M/746M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-checkstyle-plugin:2.10:check (default) on project topology.northbound: Failed during checkstyle execution: There are 29951 checkstyle errors. -> [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/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :topology.northbound