Out of space error

For the last couple of days we’ve been having scrapers fail with No space left on device - /tmp/open-uri20160809-13-1oy2dlz (Errno::ENOSPC)-type errors — e.g. https://morph.io/tmtmtmtm/uk-house-of-commons-wikidata

(We’re also seeing a lot of these quadrupled output lines (the “To fetch: 1341”) across many scrapers too — not sure if that’s something we should be opening another issue about — it’s not clear if it’s just something about the console, or if somehow it’s actually triggering multiple parallel runs)