本地build失败

Scanning dependencies of target muduo_base [ 0%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/AsyncLogging.cc.o [ 0%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Condition.cc.o [ 1%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/CountDownLatch.cc.o [ 1%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/CurrentThread.cc.o [ 1%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Date.cc.o [ 1%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Exception.cc.o [ 2%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/FileUtil.cc.o [ 2%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/LogFile.cc.o [ 2%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Logging.cc.o [ 2%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/LogStream.cc.o [ 3%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/ProcessInfo.cc.o [ 3%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Timestamp.cc.o [ 3%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/Thread.cc.o [ 3%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/ThreadPool.cc.o [ 4%] Building CXX object muduo/base/CMakeFiles/muduo_base.dir/TimeZone.cc.o distcc[55570] ERROR: compile (null) on localhost failed /home/muduo/muduo/base/TimeZone.cc: 在函数‘bool muduo::detail::readDataBlock(muduo::detail::File&, muduo::TimeZone::Data*, bool)’中: /home/muduo/muduo/base/TimeZone.cc:171:36: 错误：‘int’转换自‘long unsigned int’时可能改变值 [-Werror=conversion] const int time_size = v1 ? sizeof(int32_t) : sizeof(int64_t); ^ /home/muduo/muduo/base/TimeZone.cc:171:54: 错误：‘int’转换自‘long unsigned int’时可能改变值 [-Werror=conversion] const int time_size = v1 ? sizeof(int32_t) : sizeof(int64_t); ^ cc1plus: all warnings being treated as errors make[2]: *** [muduo/base/CMakeFiles/muduo_base.dir/TimeZone.cc.o] 错误 1 make[1]: *** [muduo/base/CMakeFiles/muduo_base.dir/all] 错误 2 make: *** [all] 错误 2 上面是错误信息

环境： CentOS Linux release 7.9.2009 (Core) x86_64

Boost版本： boost-devel.x86_64 0:1.53.0-28.el7

cmake版本： cmake version 3.7.2

gcc版本： gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44)