linux服务器使用Jenkins+gradle+git打apk包，遇到的错误Gradle build daemon disappeared unexpectedly (it may have been killed or may have crashed)，如图所示
问题产生原因：linux服务器可用内存太小，Android项目编译时恰恰又比较耗内存，所以在编译中内存不足，gradle报错
查看内存命令：free -lh
