lib/boxes/subprocess.rb in boxes-3.3.1 vs lib/boxes/subprocess.rb in boxes-3.4.0

@@ -16,17 +16,14 @@
     def self.run(command) # rubocop:disable Metrics/MethodLength
       # see: http://stackoverflow.com/a/1162850/83386
       Open3.popen3(command) do |_stdin, stdout, stderr, thread|
         # read each stream from a new thread
         { out: stdout, err: stderr }.each do |key, stream|
-          Thread.new do
-            stream.each_line do |line|
-              # yield the block depending on the stream
-              if key == :out
-                yield line, nil, thread if block_given?
-              else
-                yield nil, line, thread if block_given?
-              end
+          stream.each_line do |line|
+            if key == :out
+              yield line, nil, thread if block_given?
+            elsif key == :err
+              yield nil, line, thread if block_given?
             end
           end
         end
 
         thread.join # don't exit until the external process is done