在RStudio中安装stream包是提示错误

suen

R>install_github("mhahsler/stream")
installing *source* package 'stream' ...
** libs
D:/R/RBuildTools/3.4/mingw_64/bin/g++  -I"D:/R/R-3.3.2/include" -DNDEBUG    -I"D:/R/R-3.3.2/library/Rcpp/include" -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2 -c DBSTREAM.cpp -o DBSTREAM.o
D:/R/RBuildTools/3.4/mingw_64/bin/g++  -I"D:/R/R-3.3.2/include" -DNDEBUG    -I"D:/R/R-3.3.2/library/Rcpp/include" -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2 -c DStream.cpp -o DStream.o
D:/R/RBuildTools/3.4/mingw_64/bin/g++  -I"D:/R/R-3.3.2/include" -DNDEBUG    -I"D:/R/R-3.3.2/library/Rcpp/include" -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2 -c NumericVector.cpp -o NumericVector.o
D:/R/RBuildTools/3.4/mingw_64/bin/g++  -I"D:/R/R-3.3.2/include" -DNDEBUG    -I"D:/R/R-3.3.2/library/Rcpp/include" -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2 -c kmeansw.cc -o kmeansw.o
D:/R/RBuildTools/3.4/mingw_64/bin/g++ -shared -s -static-libgcc -o stream.dll tmp.def DBSTREAM.o DStream.o NumericVector.o kmeansw.o -Ld:/Compiler/gcc-4.9.3/local330/lib/x64 -Ld:/Compiler/gcc-4.9.3/local330/lib -LD:/R/R-3.3.2/bin/x64 -lR
installing to D:/R/R-3.3.2/library/stream/libs/x64
** R
** inst
** tests
** preparing package for lazy loading
Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) :
  there is no package called 'mclust'
ERROR: lazy loading failed for package 'stream'
* removing 'D:/R/R-3.3.2/library/stream'
Error: Command failed (1)
请问这个是什么意思呀？

suen

已经安装devtools并加载