Leverage Cargo workspaces in rustbuild#37016

Merged

bors merged 2 commits intorust-lang:masterfrom

alexcrichton:workspaces

Oct 8, 2016

Commits on Oct 7, 2016

Use workspaces and switch to a single Cargo.lock.

ahmedcharles
authored and
alexcrichton
committed

Commits on Oct 8, 2016

rustbuild: Use `cargo metadata` to learn about DAG
alexcrichton
committed