Push worked, but post-receive failed: Resource temporarily unavailable

gistfile1.txt

Counting objects: 25, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (13/13), done.
Writing objects: 100% (13/13), 1010 bytes, done.
Total 13 (delta 12), reused 0 (delta 0)
remote: Push worked, but post-receive failed: Resource temporarily unavailable - Timeout reading from the socket
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:147:in `read'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:38:in `call'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:119:in `process'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:227:in `ensure_connected'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:114:in `process'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:183:in `logging'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:113:in `process'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis/client.rb:38:in `call'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis.rb:428:in `sadd'
remote: /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-2.2.0/lib/redis.rb:427:in `sadd'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-namespace-1.0.3/lib/redis/namespace.rb:213:in `send'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/redis-namespace-1.0.3/lib/redis/namespace.rb:213:in `method_missing'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/resque-1.20.0/lib/resque.rb:205:in `watch_queue'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/resque-1.20.0/lib/resque.rb:150:in `push_without_meta'
remote: /data/github/current/lib/github/config/resque.rb:18:in `push'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/resque-1.20.0/lib/resque/job.rb:48:in `create'
remote: /data/github/current/vendor/gems/ruby/1.8/gems/resque-1.20.0/lib/resque.rb:249:in `enqueue_to'
remote: /data/github/current/lib/rock_queue.rb:68:in `enqueue'
remote: /data/github/current/lib/rock_queue.rb:39:in `push'
remote: hooks/post-receive:50
To git@github.com:BBC-News/responsive-news.git
   58b258b..f07970c  pirate -> pirate