rq Job is not unicode friendly

[difanz]

The following code will immediately crash rq:

import json
queue.enqueue(json.dumps, '1', description='中文')

The traceback would be:

00:40:39 *** Listening on high, default, low...
Traceback (most recent call last):
  File "./scripts/rqworker.py", line 8, in <module>
    sys.exit(rq.scripts.rqworker.main())
  File "/Users/alex/Develop/django/lib/python2.7/site-packages/rq/scripts/rqworker.py", line 100, in main
    w.work(burst=args.burst)
  File "/Users/alex/Develop/django/lib/python2.7/site-packages/rq/worker.py", line 351, in work
    result = self.dequeue_job_and_maintain_ttl(timeout)
  File "/Users/alex/Develop/django/lib/python2.7/site-packages/rq/worker.py", line 389, in dequeue_job_and_maintain_ttl
    blue(job.description), job.id))
  File "/Users/alex/Develop/django/lib/python2.7/site-packages/rq/utils.py", line 134, in inner
    return colorizer.colorize(color, text)
  File "/Users/alex/Develop/django/lib/python2.7/site-packages/rq/utils.py", line 91, in colorize
    return self.codes[color_key] + text + self.codes["reset"]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 0: ordinal not in range(128)

[selwin]

Fixed in #437 , @cheungtifan can you please verify that RQ no longer crashes in your use case?

[difanz]

LGTM on this CL. Thanks.

[selwin]

Closing as fixed.