There is some bug in the recipe, and some articles come empty.
For example
http://www.ft.com/intl/cms/s/2/380d5...44feabdc0.html
This is an excerpt from the log.
Code:
Processing images...
Recursion limit reached. Skipping links in http://www.ft.com/cms/s/2/d226ec48-bd0f-11e0-bdb1-00144feabdc0.html
http://www.ft.com/cms/s/2/d226ec48-bd0f-11e0-bdb1-00144feabdc0.html saved to /tmp/calibre_0.8.13_tmp_Enhk8N/SVlk4o_plumber/feed_5/article_1/d226ec48-bd0f-11e0-bdb1-00144feabdc0.xhtml
Downloading
Fetching http://www.ft.com/cms/s/2/73c4fe86-bdbb-11e0-babc-00144feabdc0.html
Downloaded article: The hunting of the snark from http://www.ft.com/cms/s/2/380d5122-bdb1-11e0-babc-00144feabdc0.html
Downloaded article: The rage of middle age from http://www.ft.com/cms/s/2/d226ec48-bd0f-11e0-bdb1-00144feabdc0.html
Processing images...
Recursion limit reached. Skipping links in http://www.ft.com/cms/s/2/13e98b16-bdd0-11e0-babc-00144feabdc0.html
http://www.ft.com/cms/s/2/13e98b16-bdd0-11e0-babc-00144feabdc0.html saved to /tmp/calibre_0.8.13_tmp_Enhk8N/SVlk4o_plumber/feed_5/article_3/13e98b16-bdd0-11e0-babc-00144feabdc0.xhtml
Downloading
Fetching http://www.ft.com/cms/s/2/6e46b4f6-b85a-11e0-8d23-00144feabdc0.html
Downloaded article: The List: Unusual things banned at rock gigs from http://www.ft.com/cms/s/2/13e98b16-bdd0-11e0-babc-00144feabdc0.html
Processing images...
Recursion limit reached. Skipping links in http://www.ft.com/cms/s/2/73c4fe86-bdbb-11e0-babc-00144feabdc0.html
http://www.ft.com/cms/s/2/73c4fe86-bdbb-11e0-babc-00144feabdc0.html saved to /tmp/calibre_0.8.13_tmp_Enhk8N/SVlk4o_plumber/feed_5/article_4/73c4fe86-bdbb-11e0-babc-00144feabdc0.xhtml
The failure to download is consistent. I tried it three times before bothering to post here, and the same articles were failing. In fact, most of the magazine section came empty today.
I cannot see any difference between the pages that are downloaded and those that are not.