Michael Hart

Unless I'm missing something very important, `self._url` is not something used anywhere other than the tests. This change results in a hang as the attempt to log an error results...

"latest" (Digest: sha256:9585099e8f87f8bcefdeb86637707c203c907d2e439c0123b4bf9ff72096871c) has a little more detail in the `error` field: ``` vips_image_get: field "iptc-data" not found vips_image_get: field "xmp-data" not found gifsave_buffer: frame too large ```

Thanks @DarthSim - I mostly wanted to ensure you had sufficient information in the report. I hope it all helps.

Checking poclbm by hand, when running using stratum source receive the following message in output rather than an acceptance: us2.eclipsemc.com:3333 15/04/2013 21:35:14, checking 1538145685