File	Line Coverage			Functions
concat.rs	18.75%	18.75%	6 / 32	44.44%	8 / 18
equals.rs	100%	100%	13 / 13	44.44%	4 / 9
neq.rs	54.55%	54.55%	6 / 11	44.44%	4 / 9
subset.rs	23.08%	23.08%	3 / 13	44.44%	4 / 9
supset.rs	25%	25%	3 / 12	44.44%	4 / 9
supseteq.rs	25%	25%	3 / 12	44.44%	4 / 9