diff --git a/Cargo.lock b/Cargo.lock
index 6de9b2b..177c123 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6,7 +6,7 @@ dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "datetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "git2 0.2.11 (git+https://github.com/alexcrichton/git2-rs.git)",
+ "git2 0.2.12 (git+https://github.com/alexcrichton/git2-rs.git)",
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "locale 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "natord 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -15,7 +15,15 @@ dependencies = [
  "pad 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "threadpool 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "users 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "users 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "aho-corasick"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -41,14 +49,14 @@ dependencies = [
  "locale 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "num 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "pad 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex_macros 0.1.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex_macros 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "tz 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "gcc"
-version = "0.3.6"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -61,12 +69,12 @@ dependencies = [
 
 [[package]]
 name = "git2"
-version = "0.2.11"
-source = "git+https://github.com/alexcrichton/git2-rs.git#f63542fb5d58c138dd3ec32f78ab3f97e2251cfa"
+version = "0.2.12"
+source = "git+https://github.com/alexcrichton/git2-rs.git#e5a439b13f45ca6b95fbf5f47ccf4b030d37ed1c"
 dependencies = [
  "bitflags 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libgit2-sys 0.2.14 (git+https://github.com/alexcrichton/git2-rs.git)",
+ "libgit2-sys 0.2.17 (git+https://github.com/alexcrichton/git2-rs.git)",
  "url 0.2.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -77,14 +85,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.2.14"
-source = "git+https://github.com/alexcrichton/git2-rs.git#f63542fb5d58c138dd3ec32f78ab3f97e2251cfa"
+version = "0.2.17"
+source = "git+https://github.com/alexcrichton/git2-rs.git#e5a439b13f45ca6b95fbf5f47ccf4b030d37ed1c"
 dependencies = [
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -101,18 +109,18 @@ version = "0.1.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "libz-sys"
-version = "0.1.3"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -137,6 +145,14 @@ name = "matches"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "memchr"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "natord"
 version = "1.0.8"
@@ -148,7 +164,7 @@ version = "0.1.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rand 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -172,10 +188,10 @@ name = "openssl-sys"
 version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "libressl-pnacl-sys 2.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pkg-config 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -188,7 +204,7 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.4"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -209,9 +225,11 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "0.1.33"
+version = "0.1.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "aho-corasick 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-syntax 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -222,15 +240,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "regex_macros"
-version = "0.1.19"
+version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "regex 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-serialize"
-version = "0.3.14"
+version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -265,12 +283,12 @@ version = "0.2.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "users"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/src/main.rs b/src/main.rs
index 4ddb8c5..0750e68 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
-#![feature(collections, convert, core, exit_status, fs_mode)]
+#![feature(convert, fs_mode)]
+#![feature(slice_extras, iter_arith, vec_resize)]
 
 extern crate ansi_term;
 extern crate datetime;
@@ -20,6 +21,7 @@ extern crate git2;
 use std::env;
 use std::fs;
 use std::path::{Component, Path, PathBuf};
+use std::process;
 use std::sync::mpsc::channel;
 
 use threadpool::ThreadPool;
@@ -197,7 +199,7 @@ fn main() {
         },
         Err(e) => {
             println!("{}", e);
-            env::set_exit_status(e.error_code());
+            process::exit(e.error_code());
         },
     };
 }