don't run half the coverage checking if we can't run it all
don't run half the coverage checking if we can't run it all

souravsingh/khmer,F1000Research/khmer,jas14/khmer,jas14/khmer,Winterflower/khmer,Winterflower/khmer,Winterflower/khmer,ged-lab/khmer,souravsingh/khmer,F1000Research/khmer,kdmurray91/khmer,souravsingh/khmer,kdmurray91/khmer,F1000Research/khmer,jas14/khmer,ged-lab/khmer,ged-lab/khmer,kdmurray91/khmer