diff --git a/src/rustbook/book.rs b/src/rustbook/book.rs
index 21f8a7793dc0..3c116aa860bc 100644
--- a/src/rustbook/book.rs
+++ b/src/rustbook/book.rs
@@ -50,14 +50,14 @@ impl<'a> Iterator for BookItems<'a> {
 
                 let mut section = "".to_string();
                 for &(_, idx) in &self.stack {
-                    section.push_str(&(idx + 1).to_string()[]);
+                    section.push_str(&(idx + 1).to_string()[..]);
                     section.push('.');
                 }
-                section.push_str(&(self.cur_idx + 1).to_string()[]);
+                section.push_str(&(self.cur_idx + 1).to_string()[..]);
                 section.push('.');
 
                 self.stack.push((self.cur_items, self.cur_idx));
-                self.cur_items = &cur.children[];
+                self.cur_items = &cur.children[..];
                 self.cur_idx = 0;
                 return Some((section, cur))
             }
@@ -68,7 +68,7 @@ impl<'a> Iterator for BookItems<'a> {
 impl Book {
     pub fn iter(&self) -> BookItems {
         BookItems {
-            cur_items: &self.chapters[],
+            cur_items: &self.chapters[..],
             cur_idx: 0,
             stack: Vec::new(),
         }
diff --git a/src/rustbook/build.rs b/src/rustbook/build.rs
index 224f1ef1a8b9..2283b06d5d5f 100644
--- a/src/rustbook/build.rs
+++ b/src/rustbook/build.rs
@@ -41,7 +41,7 @@ fn write_toc(book: &Book, path_to_root: &Path, out: &mut Writer) -> IoResult<()>
                   path_to_root: &Path,
                   out: &mut Writer) -> IoResult<()> {
         for (i, item) in items.iter().enumerate() {
-            try!(walk_item(item, &format!("{}{}.", section, i + 1)[], path_to_root, out));
+            try!(walk_item(item, &format!("{}{}.", section, i + 1)[..], path_to_root, out));
         }
         Ok(())
     }
@@ -55,7 +55,7 @@ fn write_toc(book: &Book, path_to_root: &Path, out: &mut Writer) -> IoResult<()>
                  item.title));
         if !item.children.is_empty() {
             try!(writeln!(out, "<ul class='section'>"));
-            let _ = walk_items(&item.children[], section, path_to_root, out);
+            let _ = walk_items(&item.children[..], section, path_to_root, out);
             try!(writeln!(out, "</ul>"));
         }
         try!(writeln!(out, "</li>"));
@@ -65,7 +65,7 @@ fn write_toc(book: &Book, path_to_root: &Path, out: &mut Writer) -> IoResult<()>
 
     try!(writeln!(out, "<div id='toc' class='mobile-hidden'>"));
     try!(writeln!(out, "<ul class='chapter'>"));
-    try!(walk_items(&book.chapters[], "", path_to_root, out));
+    try!(walk_items(&book.chapters[..], "", path_to_root, out));
     try!(writeln!(out, "</ul>"));
     try!(writeln!(out, "</div>"));
 
@@ -179,7 +179,7 @@ impl Subcommand for Build {
             Err(errors) => {
                 let n = errors.len();
                 for err in errors {
-                    term.err(&format!("error: {}", err)[]);
+                    term.err(&format!("error: {}", err)[..]);
                 }
 
                 Err(box format!("{} errors occurred", n) as Box<Error>)
diff --git a/src/rustbook/main.rs b/src/rustbook/main.rs
index ace57f0ac2c0..e21b2ff178e7 100644
--- a/src/rustbook/main.rs
+++ b/src/rustbook/main.rs
@@ -54,16 +54,16 @@ fn main() {
     if cmd.len() <= 1 {
         help::usage()
     } else {
-        match subcommand::parse_name(&cmd[1][]) {
+        match subcommand::parse_name(&cmd[1][..]) {
             Some(mut subcmd) => {
                 match subcmd.parse_args(cmd.tail()) {
                     Ok(_) => {
                         match subcmd.execute(&mut term) {
                             Ok(_) => (),
                             Err(err) => {
-                                term.err(&format!("error: {}", err.description())[]);
+                                term.err(&format!("error: {}", err.description())[..]);
                                 err.detail().map(|detail| {
-                                    term.err(&format!("detail: {}", detail)[]);
+                                    term.err(&format!("detail: {}", detail)[..]);
                                 });
                             }
                         }
diff --git a/src/rustbook/test.rs b/src/rustbook/test.rs
index c5d4875423ae..727a385a8f02 100644
--- a/src/rustbook/test.rs
+++ b/src/rustbook/test.rs
@@ -50,8 +50,8 @@ impl Subcommand for Test {
                         Ok(output) => {
                             if !output.status.success() {
                                 term.err(&format!("{}\n{}",
-                                         String::from_utf8_lossy(&output.output[]),
-                                         String::from_utf8_lossy(&output.error[]))[]);
+                                         String::from_utf8_lossy(&output.output[..]),
+                                         String::from_utf8_lossy(&output.error[..]))[..]);
                                 return Err(box "Some tests failed." as Box<Error>);
                             }