Merge pull request #1312 from narendasan/cask_update_error_msgs

Cask update error msgs

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

@@ -152,7 +152,7 @@ module Hbc
       onoe msg
       exit 1
     rescue StandardError, ScriptError, NoMemoryError => e
-      msg = e.message
+      msg = "#{e.message}\n"
       msg << Utils.error_message_with_suggestions
       msg << e.backtrace.join("\n")
       onoe msg

Library/Homebrew/cask/lib/hbc/utils.rb

@@ -4,7 +4,7 @@ require "stringio"
 
 require "hbc/utils/file"
 
-UPDATE_CMD = "brew uninstall --force brew-cask; brew untap phinze/cask; brew untap caskroom/cask; brew update; brew cleanup; brew cask cleanup".freeze
+PREBUG_URL = "https://github.com/caskroom/homebrew-cask/blob/master/doc/reporting_bugs/pre_bug_report.md".freeze
 ISSUES_URL = "https://github.com/caskroom/homebrew-cask#reporting-bugs".freeze
 
 # monkeypatch Object - not a great idea
@@ -145,8 +145,8 @@ module Hbc
 
     def self.error_message_with_suggestions
       <<-EOS.undent
-        Most likely, this means you have an outdated version of Homebrew-Cask. Please run:
-          #{UPDATE_CMD}
+        Follow the instuctions here:
+          #{Formatter.url(PREBUG_URL)}
 
         If this doesn’t fix the problem, please report this bug:
           #{Formatter.url(ISSUES_URL)}

Library/Homebrew/cask/test/cask/dsl_test.rb

@@ -26,7 +26,7 @@ describe Hbc::DSL do
         .*
         Unexpected method 'future_feature' called on Cask unexpected-method-cask\\.
         .*
-        brew update; brew cleanup; brew cask cleanup
+        https://github.com/caskroom/homebrew-cask/blob/master/doc/reporting_bugs/pre_bug_report.md
         .*
         https://github.com/caskroom/homebrew-cask#reporting-bugs
       EOS