The way that the depcheck task is currently written, it runs both x86_32 and x86_64 checks at the same time but it's being scheduled on both x86_64 and i386 which duplicates results and runs large tasks more often than they need to be run.
Try to minimize the hacky-ness of the change to taskotron-trigger but I suspect that the solution isn't going to be great.
This ticket had assigned some Differential requests: D161