scrapy/scrapy — pull request #202 by saxicek (2012-12-02 22:35:34+00:00)
Title: Image pipeline error improvement

When I run the pipeline, it just fails with message WARNING: 'image_downloaded hook failed' which is not very informative.

After the change it reports WARNING: 'image_downloaded hook failed: Cannot process image. Error: decoder jpeg not available' which is a bit better. ;-)