问install.packages("ggplot2")不工作

EN

install.packages("ggplot2")
Installing package into ‘/home/alex/R/x86_64-pc-linux-gnu-library/3.0’
(as ‘lib’ is unspecified)
Warning: dependencies ‘MASS’, ‘plyr’ are not available
also installing the dependency ‘reshape2’

trying URL 'http://cran.sciserv.eu/src/contrib/reshape2_1.4.1.tar.gz'
Content type 'application/x-gzip' length 34693 bytes (33 Kb)
opened URL
==================================================
downloaded 33 Kb

trying URL 'http://cran.sciserv.eu/src/contrib/ggplot2_1.0.1.tar.gz'
Content type 'application/x-gzip' length 2351203 bytes (2.2 Mb)
opened URL
==================================================
downloaded 2.2 Mb

* installing *source* package ‘reshape2’ ...
** package ‘reshape2’ successfully unpacked and MD5 sums checked
** libs
g++ -I/usr/share/R/include -DNDEBUG   -I"/home/alex/R/x86_64-pc-linux-gnu-library/3.0/Rcpp/include"   -fpic  -O3 -pipe  -g  -c RcppExports.cpp -o RcppExports.o
g++ -I/usr/share/R/include -DNDEBUG   -I"/home/alex/R/x86_64-pc-linux-gnu-library/3.0/Rcpp/include"   -fpic  -O3 -pipe  -g  -c melt.cpp -o melt.o
g++ -shared -o reshape2.so RcppExports.o melt.o -L/usr/lib/R/lib -lR
installing to /home/alex/R/x86_64-pc-linux-gnu-library/3.0/reshape2/libs
** R
** data
*** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : 
  namespace ‘plyr’ 1.8 is being loaded, but >= 1.8.1 is required
ERROR: lazy loading failed for package ‘reshape2’
* removing ‘/home/alex/R/x86_64-pc-linux-gnu-library/3.0/reshape2’
ERROR: dependencies ‘reshape2’, ‘MASS’ are not available for package ‘ggplot2’
* removing ‘/home/alex/R/x86_64-pc-linux-gnu-library/3.0/ggplot2’

The downloaded source packages are in
    ‘/tmp/RtmpIesHFE/downloaded_packages’
Warning messages:
1: In install.packages("ggplot2") :
  installation of package ‘reshape2’ had non-zero exit status
2: In install.packages("ggplot2") :
  installation of package ‘ggplot2’ had non-zero exit status
>