I'm trying to write unittests to check some Fabric-based functionality, and I'm running into some roadblocks with the @runs_once decorator. Some tests are failing when other tests call tasks decorated by @runs_once, since the decorator caches the very first return value.
From inspecting the code, I see I can simply clear this by doing `del mytask.return_value`. However, to properly fix this in all tests, I'll have to track down every task that uses @runs_once and delete this, which will be tedious.