Установка Rails вручную

gem install --local nokogiri-1.10.5.gem

2 retrie(s) left for libiconv-1.15.tar.gz
1 retrie(s) left for libiconv-1.15.tar.gz
0 retrie(s) left for libiconv-1.15.tar.gz
Failed to open TCP connection to ftp.gnu.org:80 (getaddrinfo: ▌ЄюЄ їюёЄ эхшчтхёЄхэ. )
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=C:/Ruby23/bin/$(RUBY_BASE_NAME)
        --help
        --clean
        --use-system-libraries
        --enable-static
        --disable-static
        --with-zlib-dir
        --without-zlib-dir
        --with-zlib-include
        --without-zlib-include=${zlib-dir}/include
        --with-zlib-lib
        --without-zlib-lib=${zlib-dir}/lib
        --enable-cross-build
        --disable-cross-build
C:/Ruby23/lib/ruby/2.3.0/digest.rb:50:in `initialize': No such file or directory @ rb_sysopen - C:/Ruby23/lib/ruby/gems/2.3.0/gems/nokogiri-1.10.5/por
ts/archives/libiconv-1.15.tar.gz (Errno::ENOENT)
        from C:/Ruby23/lib/ruby/2.3.0/digest.rb:50:in `open'
        from C:/Ruby23/lib/ruby/2.3.0/digest.rb:50:in `file'
        from C:/Ruby23/lib/ruby/2.3.0/digest.rb:35:in `file'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/mini_portile2-2.4.0/lib/mini_portile2/mini_portile.rb:291:in `verify_file'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/mini_portile2-2.4.0/lib/mini_portile2/mini_portile.rb:55:in `block in download'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/mini_portile2-2.4.0/lib/mini_portile2/mini_portile.rb:53:in `each'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/mini_portile2-2.4.0/lib/mini_portile2/mini_portile.rb:53:in `download'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/mini_portile2-2.4.0/lib/mini_portile2/mini_portile.rb:150:in `cook'
        from extconf.rb:365:in `block (2 levels) in process_recipe'
        from extconf.rb:257:in `block in chdir_for_build'
        from extconf.rb:256:in `chdir'
        from extconf.rb:256:in `chdir_for_build'
        from extconf.rb:364:in `block in process_recipe'
        from extconf.rb:262:in `tap'
        from extconf.rb:262:in `process_recipe'
        from extconf.rb:522:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  C:/Ruby23/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/nokogiri-1.10.5/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in C:/Ruby23/lib/ruby/gems/2.3.0/gems/nokogiri-1.10.5 for inspection.
Results logged to C:/Ruby23/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/nokogiri-1.10.5/gem_make.out

C:\Ruby23\lib\ruby\gems\2.3.0\gems\nokogiri-1.10.5\ports\archives