Added rescue block for the remote cask search failure

Library/Homebrew/cask/lib/hbc/cli/search.rb

@@ -19,8 +19,18 @@ module Hbc
       end
 
       def self.search_remote(query)
-        matches = GitHub.search_code(user: "caskroom", path: "Casks",
+        matches = begin GitHub.search_code(
-                                     filename: query, extension: "rb")
+          user: "caskroom",
+          path: "Casks",
+          filename: query,
+          extension: "rb"
+        )
+        rescue Exception => e
+          onoe e
+          $stderr.puts e.backtrace
+          []
+        end
+        
         matches.map do |match|
           tap = Tap.fetch(match["repository"]["full_name"])
           next if tap.installed?