You can clone with HTTPS or SSH.
$ sudo gem install awestruct Building native extensions. This could take a while... ERROR: Error installing awestruct: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb checking for main() in -lc... yes creating Makefile make gcc -I. -I. -I/usr/lib/ruby/1.8/x86_64-linux -I. -fPIC -fno-strict-aliasing -g -g -O2 -fPIC -O0 -Wall -Werror -c redcloth_scan.c gcc -I. -I. -I/usr/lib/ruby/1.8/x86_64-linux -I. -fPIC -fno-strict-aliasing -g -g -O2 -fPIC -O0 -Wall -Werror -c redcloth_attributes.c ragel/redcloth_attributes.c.rl: In function ‘redcloth_attribute_parser’: ragel/redcloth_attributes.c.rl:26:11: error: variable ‘act’ set but not used [-Werror=unused-but-set-variable] cc1: all warnings being treated as errors make: *** [redcloth_attributes.o] Error 1 Gem files will remain installed in /var/lib/gems/1.8/gems/RedCloth-4.2.5 for inspection. Results logged to /var/lib/gems/1.8/gems/RedCloth-4.2.5/ext/redcloth_scan/gem_make.out
$ ruby --version ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]