Warning messages:
1: running command '"C:/PROGRA~1/R/R-30~1.1/bin/i386/R" CMD INSTALL -l "C:\Users\dengyishuo\R\win-library\3.0" "XML_3.98-1.1.tar.gz"' had status 1
2: In install.packages("XML_3.98-1.1.tar.gz", rep = NULL, type = "source") :
installation of package ‘XML_3.98-1.1.tar.gz’ had non-zero exit status