Auto merge of #14028 - servo:rustup, r=nox,SimonSapin

Update Rust to 1.14.0-nightly (7c69b0d5a 2016-11-01)

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- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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components/layout_thread/lib.rs

@@ -9,8 +9,8 @@
 #![feature(custom_derive)]
 #![feature(mpsc_select)]
 #![feature(plugin)]
+#![feature(proc_macro)]
 
-#![plugin(heapsize_plugin)]
 #![plugin(plugins)]
 
 extern crate app_units;
@@ -21,6 +21,7 @@ extern crate fnv;
 extern crate gfx;
 extern crate gfx_traits;
 extern crate heapsize;
+#[macro_use] extern crate heapsize_derive;
 extern crate ipc_channel;
 #[macro_use]
 extern crate layout;