diff --git a/deps/regex b/deps/regex
index 8b44176a9..b8cc898f1 160000
--- a/deps/regex
+++ b/deps/regex
@@ -1 +1 @@
-Subproject commit 8b44176a91326ec0b5e33bc36443ba00cb528c16
+Subproject commit b8cc898f17442e5769cbce081d884e47d28c54e5
diff --git a/deps/rust-crypto b/deps/rust-crypto
index d06c8672a..e2ba6ea92 160000
--- a/deps/rust-crypto
+++ b/deps/rust-crypto
@@ -1 +1 @@
-Subproject commit d06c8672a212add38edfcc5b504e4b4cb30c5a8b
+Subproject commit e2ba6ea926782278222558557d3d87221b87c740
diff --git a/mkmain.rs b/mkmain.rs
index b33c735aa..d7657818e 100644
--- a/mkmain.rs
+++ b/mkmain.rs
@@ -1,10 +1,10 @@
-#![feature(core, env, old_io, old_path)]
+#![feature(core, exit_status, old_io, old_path)]
 use std::env;
 use std::old_io::{File, Truncate, ReadWrite};
 use std::old_path::Path;
 
 static TEMPLATE: &'static str = "\
-#![feature(env)]
+#![feature(exit_status)]
 extern crate \"@UTIL_CRATE@\" as uu@UTIL_CRATE@;
 
 use std::env;
diff --git a/mkuutils.rs b/mkuutils.rs
index 48445cdc2..d5b668528 100644
--- a/mkuutils.rs
+++ b/mkuutils.rs
@@ -1,4 +1,4 @@
-#![feature(core, env, old_io, old_path)]
+#![feature(core, exit_status, old_io, old_path)]
 
 use std::env;
 use std::old_io::{File, Truncate, Write};
diff --git a/src/du/du.rs b/src/du/du.rs
index 96cab13cc..516ec8e2f 100644
--- a/src/du/du.rs
+++ b/src/du/du.rs
@@ -268,7 +268,7 @@ ers of 1000).",
         None => 1024
     };
 
-    let convert_size = |&: size: u64| -> String {
+    let convert_size = |size: u64| -> String {
         if matches.opt_present("human-readable") || matches.opt_present("si") {
             if size >= MB {
                 format!("{:.1}M", (size as f64) / (MB as f64))
diff --git a/src/fold/fold.rs b/src/fold/fold.rs
index 9e8de9fe6..cb3b47b42 100644
--- a/src/fold/fold.rs
+++ b/src/fold/fold.rs
@@ -124,7 +124,7 @@ fn fold_file<T: io::Reader>(file: BufferedReader<T>, bytes: bool, spaces: bool,
                 let slice = {
                     let slice = &line[i..i + width];
                     if spaces && i + width < len {
-                        match slice.rfind(|&: ch: char| ch.is_whitespace()) {
+                        match slice.rfind(|ch: char| ch.is_whitespace()) {
                             Some(m) => &slice[..m + 1],
                             None => slice
                         }
diff --git a/src/mv/mv.rs b/src/mv/mv.rs
index 890f6b13d..f89f32d49 100644
--- a/src/mv/mv.rs
+++ b/src/mv/mv.rs
@@ -161,7 +161,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
         verbose: matches.opt_present("v"),
     };
 
-    let string_to_path = |&: s: &String| { Path::new(s.as_slice()) };
+    let string_to_path = |s: &String| { Path::new(s.as_slice()) };
     let paths: Vec<Path> = matches.free.iter().map(string_to_path).collect();
 
     if matches.opt_present("version") {
diff --git a/src/nl/nl.rs b/src/nl/nl.rs
index 7e1e0b9cb..31f052dee 100644
--- a/src/nl/nl.rs
+++ b/src/nl/nl.rs
@@ -167,7 +167,7 @@ fn nl<T: Reader> (reader: &mut BufferedReader<T>, settings: &Settings) {
     let line_no_width_initial = line_no_width;
     // Stores the smallest integer with one more digit than line_no, so that
     // when line_no >= line_no_threshold, we need to use one more digit.
-    let mut line_no_threshold = Int::pow(10u64, line_no_width);
+    let mut line_no_threshold = Int::pow(10u64, line_no_width as u32);
     let mut empty_line_count: u64 = 0;
     let fill_char = match settings.number_format {
         NumberFormat::RightZero => '0',
@@ -229,7 +229,7 @@ fn nl<T: Reader> (reader: &mut BufferedReader<T>, settings: &Settings) {
                     if settings.renumber {
                         line_no = settings.starting_line_number;
                         line_no_width = line_no_width_initial;
-                        line_no_threshold = Int::pow(10u64, line_no_width);
+                        line_no_threshold = Int::pow(10u64, line_no_width as u32);
                     }
                     &settings.header_numbering
                 },
diff --git a/src/od/od.rs b/src/od/od.rs
index 32519b3ce..b8dec3845 100644
--- a/src/od/od.rs
+++ b/src/od/od.rs
@@ -73,12 +73,12 @@ fn main(input_offset_base: &Radix, fname: &str) {
         match f.read(bytes) {
             Ok(n) => {
                 print_with_radix(input_offset_base, addr);
-                for b in range(0, n / std::u16::BYTES) {
+                for b in range(0, n / std::u16::BYTES as usize) {
                     let bs = &bytes[(2 * b) .. (2 * b + 2)];
                     let p: u16 = (bs[1] as u16) << 8 | bs[0] as u16;
                     print!(" {:06o}", p);
                 }
-                if n % std::u16::BYTES == 1 {
+                if n % std::u16::BYTES as usize == 1 {
                     print!(" {:06o}", bytes[n - 1]);
                 }
                 print!("\n");
diff --git a/src/split/split.rs b/src/split/split.rs
index 1a35421e1..b8ba7256f 100644
--- a/src/split/split.rs
+++ b/src/split/split.rs
@@ -225,7 +225,7 @@ fn str_prefix(i: usize, width: usize) -> String {
     let mut w = width;
     while w > 0 {
         w -= 1;
-        let div = Int::pow(26 as usize, w);
+        let div = Int::pow(26 as usize, w as u32);
         let r = n / div;
         n -= r * div;
         c.push(char::from_u32((r as u32) + 97).unwrap());
@@ -240,7 +240,7 @@ fn num_prefix(i: usize, width: usize) -> String {
     let mut w = width;
     while w > 0 {
         w -= 1;
-        let div = Int::pow(10 as usize, w);
+        let div = Int::pow(10 as usize, w as u32);
         let r = n / div;
         n -= r * div;
         c.push(char::from_digit(r as u32, 10).unwrap());
diff --git a/src/stdbuf/stdbuf.rs b/src/stdbuf/stdbuf.rs
index ec4aa1b70..cc05e8f6b 100644
--- a/src/stdbuf/stdbuf.rs
+++ b/src/stdbuf/stdbuf.rs
@@ -90,8 +90,8 @@ fn print_usage(opts: &[OptGroup]) {
 }
 
 fn parse_size(size: &str) -> Option<u64> {
-    let ext = size.trim_left_matches(|&: c: char| c.is_digit(10));
-    let num = size.trim_right_matches(|&: c: char| c.is_alphabetic());
+    let ext = size.trim_left_matches(|c: char| c.is_digit(10));
+    let num = size.trim_right_matches(|c: char| c.is_alphabetic());
     let mut recovered = num.to_string();
     recovered.push_str(ext);
     if recovered.as_slice() != size {
@@ -101,7 +101,7 @@ fn parse_size(size: &str) -> Option<u64> {
         Some(m) => m,
         None => return None,
     };
-    let (power, base): (usize, u64) = match ext {
+    let (power, base): (u32, u64) = match ext {
         "" => (0, 0),
         "KB" => (1, 1024),
         "K" => (1, 1000),
diff --git a/src/test/test.rs b/src/test/test.rs
index b484630bb..5251a997e 100644
--- a/src/test/test.rs
+++ b/src/test/test.rs
@@ -336,7 +336,7 @@ fn path(path: &[u8], cond: PathCondition) -> bool {
         Write   = 0o2,
         Execute = 0o1,
     }
-    let perm = |&: stat: stat, p: Permission| {
+    let perm = |stat: stat, p: Permission| {
         use libc::{getgid, getuid};
         let (uid, gid) = unsafe { (getuid(), getgid()) };
         if uid == stat.st_uid {
diff --git a/src/tr/tr.rs b/src/tr/tr.rs
index a35f9c48a..45e85bfd6 100644
--- a/src/tr/tr.rs
+++ b/src/tr/tr.rs
@@ -96,7 +96,7 @@ fn delete(set: Vec<char>, complement: bool) {
         bset.insert(c as usize);
     }
 
-    let is_allowed = |&: c : char| {
+    let is_allowed = |c : char| {
         if complement {
             bset.contains(&(c as usize))
         } else {
diff --git a/src/uutils/uutils.rs b/src/uutils/uutils.rs
index 778dc7f33..183b51589 100644
--- a/src/uutils/uutils.rs
+++ b/src/uutils/uutils.rs
@@ -1,5 +1,5 @@
 #![crate_name = "uutils"]
-#![feature(core, env, old_path, rustc_private)]
+#![feature(core, exit_status, old_path, rustc_private)]
 
 /*
  * This file is part of the uutils coreutils package.