Rvm: Gagal menginstal Ruby 2.3.1 di Windows 10 dengan Cygwin

Saya telah menginstal rvm v1.27.0 (master) pada Windows 10 64bit dengan Cygwin.
Ketika saya mencoba menginstal Ruby 2.3.1 saya mendapatkan kesalahan berikut:

$ rvm install ruby-2.3
Searching for binary rubies, this might take some time.
No binary rubies available for: cygwin/unknown/x86_64/ruby-2.3.1.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for cygwin.
Installing requirements for cygwin.
Updating system.
Installing required packages: cygwin32-readline.
Requirements installation successful.
Installing Ruby from source to: /home/Enrico/.rvm/rubies/ruby-2.3.1, this may take a while depending on your cpu(s)...
ruby-2.3.1 - #downloading ruby-2.3.1, this may take a while depending on your connection...
ruby-2.3.1 - #extracting ruby-2.3.1 to /home/Enrico/.rvm/src/ruby-2.3.1....
ruby-2.3.1 - #configuring..........................................................
ruby-2.3.1 - #post-configuration..
ruby-2.3.1 - #compiling...........
Error running '__rvm_make -j8',
showing last 15 lines of /home/Enrico/.rvm/log/1466719356_ruby-2.3.1/make.log
compiling ./missing/langinfo.c
compiling ./missing/crypt.c
./missing/crypt.c:948:1: error: conflicting types for ‘encrypt’
 encrypt(block, flag)
 ^
In file included from /usr/include/sys/reent.h:13:0,
                 from /usr/include/math.h:5,
                 from ./include/ruby/missing.h:23,
                 from ./missing/crypt.c:37:
/usr/include/sys/unistd.h:53:6: note: previous declaration of ‘encrypt’ was here
 void _EXFUN(encrypt, (char *__block, int __edflag));
      ^
make: *** [Makefile:376: crypt.o] Error 1
make: *** Waiting for unfinished jobs....
++ return 2
There has been an error while running make. Halting the installation.

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