Merge pull request #8041 from chrisroberts/ui/nicer-outputs

Logger and error outputs

lib/vagrant.rb

@@ -264,6 +264,9 @@ if Vagrant.plugins_init?
     Vagrant::Bundler.instance.init!(plugins)
   rescue Exception => e
     global_logger.error("Plugin initialization error - #{e.class}: #{e}")
+    e.backtrace.each do |backtrace_line|
+      global_logger.debug(backtrace_line)
+    end
     raise Vagrant::Errors::PluginInitError, message: e.to_s
   end
 end
@@ -330,6 +333,10 @@ if Vagrant.plugins_enabled?
       ::Bundler.require(:plugins)
     end
   rescue Exception => e
+    global_logger.error("Plugin loading error: #{e.class} - #{e}")
+    e.backtrace.each do |backtrace_line|
+      global_logger.debug(backtrace_line)
+    end
     raise Vagrant::Errors::PluginLoadError, message: e.to_s
   end
 end

plugins/commands/plugin/action/repair_plugins.rb

@@ -14,14 +14,22 @@ module VagrantPlugins
       class RepairPlugins
         def initialize(app, env)
           @app = app
+          @logger = Log4r::Logger.new("vagrant::plugins::plugincommand::repair")
         end
 
         def call(env)
           env[:ui].info(I18n.t("vagrant.commands.plugin.repairing"))
           plugins = Vagrant::Plugin::Manager.instance.installed_plugins
+          begin
             Vagrant::Bundler.instance.init!(plugins, :repair)
             env[:ui].info(I18n.t("vagrant.commands.plugin.repair_complete"))
-
+          rescue Exception => e
+            @logger.error("Failed to repair user installed plugins: #{e.class} - #{e}")
+            e.backtrace.each do |backtrace_line|
+              @logger.debug(backtrace_line)
+            end
+            env[:ui].error(I18n.t("vagrant.commands.plugin.repair_failed", message: e.message))
+          end
           # Continue
           @app.call(env)
         end

templates/locales/en.yml

@@ -1647,7 +1647,13 @@ en:
         repair_complete: |-
           Installed plugins successfully repaired!
         repair_failed: |-
-          Failed to automatically repair installed Vagrant plugins. Failure message:
+          Failed to automatically repair installed Vagrant plugins. To fix this
+          problem remove all user installed plugins and reinstall. Vagrant can
+          do this for you automatically by running the following command:
+
+            vagrant plugin expunge --reinstall
+
+          Failure message received during repair:
 
           %{message}
       snapshot: