buoys scheduler error

gistfile1.txt

May 06 11:10:08 buoys heroku/api:  Starting process with command `coffee worker.coffee` by [email protected] 
May 06 11:10:10 buoys heroku/scheduler.9077:  Starting process with command `coffee worker.coffee` 
May 06 11:10:11 buoys heroku/scheduler.9077:  State changed from starting to up 
May 06 11:10:11 buoys app/scheduler.9077:  Byron Bay - fetching graph from http://mhl.nsw.gov.au/data/byron.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Coffs Harbour - fetching graph from http://mhl.nsw.gov.au/data/coffs.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Crowdy Head - fetching graph from http://mhl.nsw.gov.au/data/crowdy.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Sydney - fetching graph from http://mhl.nsw.gov.au/data/syddir.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Port Kembla - fetching graph from http://mhl.nsw.gov.au/data/portko.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Batemans Bay - fetching graph from http://mhl.nsw.gov.au/data/batman.gif 
May 06 11:10:11 buoys app/scheduler.9077:  Eden - fetching graph from http://mhl.nsw.gov.au/data/edeno.gif 
May 06 11:10:11 buoys app/scheduler.9077:  [undefined] SocketIO threw error: 
May 06 11:10:11 buoys app/scheduler.9077:   "Error: socket hang up\n    at createHangUpError (http.js:1373:15)\n    at Socket.socketOnEnd [as onend] (http.js:1470:23)\n    at TCP.onread (net.js:419:26)"  
May 06 11:10:18 buoys app/scheduler.9077:  Byron Bay - graph parsed, storing in redis { direction: 155, hsig: 2.1, hmax: 3.7, tsig: 8.6, tp1: 13.3 } 
May 06 11:10:18 buoys app/scheduler.9077:  Coffs Harbour - graph parsed, storing in redis { direction: 170.5, hsig: 2.1, hmax: 4.2, tsig: 8.6, tp1: 10.8 } 
May 06 11:10:18 buoys app/scheduler.9077:  Crowdy Head - graph parsed, storing in redis { direction: 147.2, hsig: 1.9, hmax: 2.7, tsig: 9.6, tp1: 10.8 } 
May 06 11:10:18 buoys app/scheduler.9077:  Sydney - graph parsed, storing in redis { direction: 147.2, hsig: 2.1, hmax: 3.2, tsig: 8.9, tp1: 9.7 } 
May 06 11:10:18 buoys app/scheduler.9077:  Batemans Bay - graph parsed, storing in redis { direction: 164.7, hsig: 2.3, hmax: 4.4, tsig: 8.9, tp1: 9.3 } 
May 06 11:10:18 buoys app/scheduler.9077:  Eden - graph parsed, storing in redis { direction: 134.1, hsig: 1.7, hmax: 2.8, tsig: 9.6, tp1: 12.9 } 
May 06 11:10:18 buoys heroku/scheduler.9077:  Process exited with status 0 
May 06 11:10:18 buoys heroku/scheduler.9077:  State changed from up to complete