Deterministic build: Compare step: Fix the logging when the files have a different size.

scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py

Index: scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py
diff --git a/scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py b/scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py
index 8001ba3b72b662876c35f124c6d2d4aac73edd02..73779b8c8ec044ebee12f416df2c3ee4dc9d1fd4 100644
--- a/scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py
+++ b/scripts/slave/recipe_modules/isolate/resources/compare_build_artifacts.py
@@ -86,7 +86,7 @@ def compare_build_artifacts(first_dir, second_dir):
       result = 'equal'
     else:
       file_len = os.stat(first_file).st_size
-      difference = ('different size' if result == -1 else
+      difference = ('different size' if files_diffs == -1 else

[M-A Ruel, 2014/10/31 20:16:58]

I'd go all the way while at it;
if files_diffs == -1:
  difference = 'different size: %d != %d' % (file_len,
os.stat(second_file).st_size)
else:
  difference = '%d out of %d bytes are different (%.2f%%)' % (
      files_diffs, file_len, 100.0 * files_diffs / file_len))

                     '%d out of %d bytes are different (%.2f%%)' %
                     (files_diffs, file_len, 100.0 * files_diffs / file_len))
       result = 'DIFFERENT: %s' % difference