taskrabbit/node-resque — pull request #22 by evantahler (2014-03-21 17:47:12+00:00)
Title: saftey for jobs with mutliple callbacks

This PR will harshly handle jobs / plugins which call their callback more than once. Before now, a poorly written job could cause many problems, including recursion, working more than one job at a time, and data loss.

```javascript
"badJob": {
perform: function(a,b,callback){
callback();
callback();
}
}
```