rvm install 1.9.3 failure

gistfile1.txt

make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/bug-3662'
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/win32/dln'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/win32/dln'
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/win32/fd_setsize'
make[2]: Nothing to be done for `all'.
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/win32/fd_setsize'
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/bigdecimal'
compiling cstr.c
compiling bigdecimal.c
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/funcall'
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/st/numhash'
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/old_thread_select'
installing default string libraries
make[2]: Leaving directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/-test-/bug-3571'
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/continuation'
compiling continuation.c
cp: cannot create regular file `../../.ext/common/bigdecimal': File exists
make[2]: *** [../../.ext/common/bigdecimal/util.rb] Error 1
make[2]: *** Waiting for unfinished jobs....
installing default continuation libraries
installing default wait_for_single_fd libraries
linking shared-object -test-/wait_for_single_fd/wait_for_single_fd.so
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/coverage'
compiling coverage.c
make[2]: Entering directory `/backup/ghlab/.rvm/src/ruby-1.9.3-p392/ext/curses'
compiling curses.c
bigdecimal.c: In function ‘BigDecimal_prec’:
bigdecimal.c:306:5: warning: variable ‘vStack’ set but not used [-Wunused-but-set-variable]
bigdecimal.c: In function ‘BigDecimal_hash’: