Merge pull request #2063 from t-osakada/fix-rescue-error-enoent

fix to rescue Errno::ENOENT for File.mtime()

lib/fluent/plugin/in_tail.rb

@@ -216,20 +216,24 @@ def expand_paths
         path = date.strftime(path)
         if path.include?('*')
           paths += Dir.glob(path).select { |p|
-            is_file = !File.directory?(p)
-            if File.readable?(p) && is_file
-              if @limit_recently_modified && File.mtime(p) < (date - @limit_recently_modified)
-                false
+            begin
+              is_file = !File.directory?(p)
+              if File.readable?(p) && is_file
+                if @limit_recently_modified && File.mtime(p) < (date - @limit_recently_modified)
+                  false
+                else
+                  true
+                end
               else
-                true
-              end
-            else
-              if is_file
-                unless @ignore_list.include?(path)
-                  log.warn "#{p} unreadable. It is excluded and would be examined next time."
-                  @ignore_list << path if @ignore_repeated_permission_error
+                if is_file
+                  unless @ignore_list.include?(path)
+                    log.warn "#{p} unreadable. It is excluded and would be examined next time."
+                    @ignore_list << path if @ignore_repeated_permission_error
+                  end
                 end
+                false
               end
+            rescue Errno::ENOENT
               false
             end
           }