Catch registry credentials errors nicer

lib/mrsk/cli/registry.rb

@@ -5,10 +5,14 @@ class Mrsk::Cli::Registry < Mrsk::Cli::Base
   def login
     run_locally           { execute *MRSK.registry.login }
     on(MRSK.config.hosts) { execute *MRSK.registry.login }
+  rescue ArgumentError => e
+    puts e.message
   end
 
   desc "logout", "Logout of the registry remotely"
   def logout
     on(MRSK.config.hosts) { execute *MRSK.registry.logout }
+  rescue ArgumentError => e
+    puts e.message
   end
 end