Error Messages with Robot framework in Eclipse

I'm testing a swing application with Robot Framework in Eclipse and have now updated the version to 3.0.2 in build.xml. Now, however, I get a bunch of error messages in the log, see below. How can I solve this?

 [java] Error in atexit._run_exitfuncs:
 [java] Traceback (most recent call last):
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\atexit.py", line 24, in _run_exitfuncs
 [java] Error in sys.exitfunc:
 [java] Traceback (most recent call last):
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\atexit.py", line 30, in _run_exitfuncs
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\traceback.py", line 232, in print_exc
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\traceback.py", line 125, in print_exception
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\traceback.py", line 69, in print_tb
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\linecache.py", line 14, in getline
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\linecache.py", line 40, in getlines
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\linecache.py", line 92, in updatecache
 [java]   File "C:\Users\mmemmel\.m2\repository\org\robotframework\robotframework\3.0.2\robotframework-3.0.2.jar\Lib\linecache.py", line 92, in updatecache
 [java] java.lang.OutOfMemoryError: PermGen space
 [java] java.lang.OutOfMemoryError: java.lang.OutOfMemoryError: PermGen space