Make `btree_set::{IntoIter, Iter, Range}` covariant#30998

Merged

bors merged 1 commit intorust-lang:masterfrom apasel422:btree-set-variance

Jan 19, 2016

+19-19

Commits on Jan 18, 2016

Make btree_set::{IntoIter, Iter, Range} covariant
apasel422
committed