为什么出错？使用ant编译官方的仿真救援服务器。。。

[javac] Compiling 5 source files to /usr/roborescue/rescue2013/build/misc/classes
[javac] /usr/roborescue/rescue2013/modules/misc/src/misc/MiscSimulator.java:45: illegal start of type
[javac] private Map<EntityID, Integer> oldBrokenBuildingsBuriedness=new HashMap<>();
[javac] ^
[javac] 1 error
BUILD FAILED