[!] Unable to add a source with url git@github.com:CocoaPods/Specs.git named master-1. You can try adding it manually in ~/.cocoapods/repos
git@github.com:CocoaPods/Specs.git
master-1
~/.cocoapods/repos
Please follow this link for this problem. Its possible to forgott set your newly install Xcode path on command-line tool. Xcode-->Preferences-->Locations-->Command line tool --> set your Xcode.