Rollup of 11 pull requests#46166

Merged

bors merged 29 commits intorust-lang:masterfrom

Nov 21, 2017

Commits on Nov 14, 2017

update let-expressions to use except
gaurikholkar
committed

Commits on Nov 16, 2017

Commits on Nov 17, 2017

Optimize `read_to_end`.
sunfishcode
committed

Commits on Nov 19, 2017

dead code lint to say "never constructed" for variants
zackmdavis
committed

Commits on Nov 21, 2017