File	Line Coverage			Functions		Branches
backoff.rs	90.28%	90.28%	65 / 72	61.11%	55 / 90	100%	0 / 0
descriptor.rs	89.03%	89.03%	138 / 155	26.53%	13 / 49	100%	0 / 0
reactor.rs	75.81%	75.81%	633 / 835	26.4%	146 / 553	100%	0 / 0