diff --git a/src/echo/echo.rs b/src/echo/echo.rs
index d66abc859..ea9c53720 100644
--- a/src/echo/echo.rs
+++ b/src/echo/echo.rs
@@ -1,5 +1,5 @@
 #![crate_name = "echo"]
-#![feature(collections, core, old_io, rustc_private)]
+#![feature(rustc_private, str_char)]
 
 /*
  * This file is part of the uutils coreutils package.
@@ -13,8 +13,6 @@
 extern crate getopts;
 extern crate libc;
 
-use std::old_io::{print, println};
-use std::num::from_str_radix;
 use std::str::from_utf8;
 
 #[path = "../common/util.rs"]
@@ -32,7 +30,7 @@ struct EchoOptions {
 
 #[inline(always)]
 fn to_char(bytes: &Vec<u8>, base: u32) -> char {
-    from_str_radix::<usize>(from_utf8(bytes.as_slice()).unwrap(), base).unwrap() as u8 as char
+    usize::from_str_radix(from_utf8(bytes.as_ref()).unwrap(), base).unwrap() as u8 as char
 }
 
 #[inline(always)]
@@ -60,7 +58,7 @@ fn convert_str(string: &[u8], index: usize, base: u32) -> (char, usize) {
     };
 
     let mut bytes = vec!();
-    for offset in range(0usize, max_digits) {
+    for offset in (0usize .. max_digits) {
         if string.len() <= index + offset as usize {
             break;
         }
@@ -83,7 +81,7 @@ fn parse_options(args: Vec<String>, options: &mut EchoOptions) -> Option<Vec<Str
     let mut echo_args = vec!();
     let program = args[0].clone();
     'argloop: for arg in args.into_iter().skip(1) {
-        match arg.as_slice() {
+        match arg.as_ref() {
             "--help" | "-h" => {
                 print_help(&program);
                 return None;
@@ -96,10 +94,9 @@ fn parse_options(args: Vec<String>, options: &mut EchoOptions) -> Option<Vec<Str
             "-e" => options.escape = true,
             "-E" => options.escape = false,
             _ => {
-                if arg.len() > 1 && arg.as_slice().char_at(0) == '-' {
+                if arg.len() > 1 && arg.char_at(0) == '-' {
                     let mut newopts = options.clone();
-                    let argptr: *const String = &arg;  // escape from the borrow checker
-                    for ch in unsafe { (*argptr).as_slice() }.chars().skip(1) {
+                    for ch in arg.chars().skip(1) {
                         match ch {
                             'h' => {
                                 print_help(&program);
@@ -113,7 +110,7 @@ fn parse_options(args: Vec<String>, options: &mut EchoOptions) -> Option<Vec<Str
                             'e' => newopts.escape = true,
                             'E' => newopts.escape = false,
                             _ => {
-                                echo_args.push(arg);
+                                echo_args.push(arg.clone());
                                 continue 'argloop;
                             }
                         }
@@ -142,8 +139,8 @@ fn print_help(program: &String) {
     println!("  {0} [SHORT-OPTION]... [STRING]...", *program);
     println!("  {0} LONG-OPTION", *program);
     println!("");
-    println(getopts::usage("Echo the STRING(s) to standard output.", &opts).as_slice());
-    println("If -e is in effect, the following sequences are recognized:
+    println!("{}", getopts::usage("Echo the STRING(s) to standard output.", &opts));
+    println!("{}", "If -e is in effect, the following sequences are recognized:
 
 \\\\      backslash
 \\a      alert (BEL)
@@ -178,7 +175,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
         let string = free.connect(" ");
         if options.escape {
             let mut prev_was_slash = false;
-            let mut iter = string.as_slice().chars().enumerate();
+            let mut iter = string.chars().enumerate();
             loop {
                 match iter.next() {
                     Some((index, c)) => {
@@ -207,7 +204,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
                                         print!("\\x");
                                     } else {
                                         print!("{}", c);
-                                        for _ in range(0, num_char_used) {
+                                        for _ in (0 .. num_char_used) {
                                             iter.next(); // consume used characters
                                         }
                                     }
@@ -218,7 +215,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
                                         print!("\0");
                                     } else {
                                         print!("{}", c);
-                                        for _ in range(0, num_char_used) {
+                                        for _ in (0 .. num_char_used) {
                                             iter.next(); // consume used characters
                                         }
                                     }
@@ -229,7 +226,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
                                         print!("\\{}", c);
                                     } else {
                                         print!("{}", esc_c);
-                                        for _ in range(1, num_char_used) {
+                                        for _ in (1 .. num_char_used) {
                                             iter.next(); // consume used characters
                                         }
                                     }
@@ -241,7 +238,7 @@ pub fn uumain(args: Vec<String>) -> i32 {
                 }
             }
         } else {
-            print(string.as_slice());
+            print!("{}", string);
         }
     }