---

yaml
---
r: 127079
b: refs/heads/snap-stage3
c: 2b9c5d2
h: refs/heads/master
i:
  127077: f6efaae
  127075: b8453de
  127071: 4017d3c
v: v3

Author: steveklabnik

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 7be8f0af0393dcdb077c2f6b1653836fd3fba235
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 1a80dcbd56e9b7f81b7d3aa4c3809ed1859fdcf7
+refs/heads/snap-stage3: 2b9c5d2f74de052598c62edb20049182112fe9fa
 refs/heads/try: 502e4c045236682e9728539dc0d2b3d0b237f55c
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/doc/guide.md

@@ -354,6 +354,18 @@ file, we would need to call `rustc` twice, and pass it a bunch of options to
 tell it to build everything together. With Cargo, as our project grows, we can
 just `cargo build` and it'll work the right way.
 
+You'll also notice that Cargo has created a new file: `Cargo.lock`.
+
+```{ignore,notrust}
+[root]
+name = "hello_world"
+version = "0.0.1"
+```
+
+This file is used by Cargo to keep track of dependencies in your application.
+Right now, we don't have any, so it's a bit sparse. You won't ever need
+to touch this file yourself, just let Cargo handle it.
+
 That's it! We've successfully built `hello_world` with Cargo. Even though our
 program is simple, it's using much of the real tooling that you'll use for the
 rest of your Rust career.