ICE from regions (Cannot encode region variables) #4492
Description
I'll try cutting this down to a small test case later, but for now here are some in my TreeMap implementation (commented out):
- https://github.com/thestinger/rust/blob/f94da6e7d7e304204d10bcd4100b829f1ddd0ca0/src/libstd/treemap.rs#L51
- https://github.com/thestinger/rust/blob/f94da6e7d7e304204d10bcd4100b829f1ddd0ca0/src/libstd/treemap.rs#L673
- https://github.com/thestinger/rust/blob/f94da6e7d7e304204d10bcd4100b829f1ddd0ca0/src/libstd/treemap.rs#L683