servo: Merge #10688 - Update Cargo to 2016-04-17 nightly (from mbrubeck:cargo-up); r=Manishearth

To pick up rust-lang/cargo#2534 and other recent fixes. Source-Repo: https://github.com/servo/servo Source-Revision: 42eb9c63a1e11e9363efe9187b35d39fc4475b49
2016-04-19 07:13:04 +05:01 · 2016-04-19 07:13:04 +05:01 · 1c79d5da6a
--- a/servo/cargo-nightly-build
+++ b/servo/cargo-nightly-build
@ -1 +1 @@
-2016-03-23
+2016-04-17
 @ -1 +1 @@
 -03-23
 -04-17