File	Line Coverage			Functions
concat.rs	18.75%	18.75%	6 / 32	50%	8 / 16
equals.rs	100%	100%	13 / 13	50%	4 / 8
neq.rs	54.55%	54.55%	6 / 11	50%	4 / 8
subset.rs	23.08%	23.08%	3 / 13	50%	4 / 8
supset.rs	25%	25%	3 / 12	50%	4 / 8
supseteq.rs	25%	25%	3 / 12	50%	4 / 8