make failed, uncaught signal 11
Gem files will remain installed in C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/http_parser.rb-0.6.0 for inspection. Results logged to C:/Ruby26-x64/lib/ruby/gems/2.6.0/extensions/x64-mingw32/2.6.0/http_parser.rb-0.6.0/gem_make.out Successfully installed bundler-2.1.4 Parsing documentation for bundler-2.1.4 Done installing documentation for bundler after 4 seconds 1 gem installed
C:\Users\ryan1>jekyll -v 'jekyll' is not recognized as an internal or external command, operable program or batch file.
Sometimes, in the late hours of the night, the jekyll command is aliased to hyde. And of those times, sometimes it will respond to your request pleasantly and run as expected, but other times it can be quite unfriendly. When that happens, I usually wait until morning and then try again when it's behaving better.
That or the executable is missing from your path. Which is the case here? Who can say? But it's probably the first one.