diff --git a/src/expand/expand.rs b/src/expand/expand.rs
index dbd90f14d..8c32490e4 100644
--- a/src/expand/expand.rs
+++ b/src/expand/expand.rs
@@ -105,7 +105,7 @@ pub fn uumain(args: Vec<String>) -> int {
     return 0;
 }
 
-fn open(path: String) -> io::BufferedReader<Box<Reader>> {
+fn open(path: String) -> io::BufferedReader<Box<Reader+'static>> {
     let mut file_buf;
     if path.as_slice() == "-" {
         io::BufferedReader::new(box io::stdio::stdin_raw() as Box<Reader>)
diff --git a/src/hashsum/hashsum.rs b/src/hashsum/hashsum.rs
index 7557eb54f..7df564448 100644
--- a/src/hashsum/hashsum.rs
+++ b/src/hashsum/hashsum.rs
@@ -59,7 +59,7 @@ fn get_algo_opts(program: &str) -> Vec<getopts::OptGroup> {
     }
 }
 
-fn detect_algo(program: &str, matches: &getopts::Matches) -> (&'static str, Box<Digest>) {
+fn detect_algo(program: &str, matches: &getopts::Matches) -> (&'static str, Box<Digest+'static>) {
     let mut alg: Option<Box<Digest>> = None;
     let mut name: &'static str = "";
     match program {
@@ -71,7 +71,7 @@ fn detect_algo(program: &str, matches: &getopts::Matches) -> (&'static str, Box<
         "sha512sum" => ("SHA512", box Sha512::new() as Box<Digest>),
         _ => {
             {
-                let set_or_crash = |n: &'static str, val: Box<Digest>| -> () {
+                let set_or_crash = |n, val| -> () {
                     if alg.is_some() { crash!(1, "You cannot combine multiple hash algorithms!") };
                     name = n;
                     alg = Some(val);
diff --git a/src/unexpand/unexpand.rs b/src/unexpand/unexpand.rs
index 47fd813eb..1c13edd15 100644
--- a/src/unexpand/unexpand.rs
+++ b/src/unexpand/unexpand.rs
@@ -107,7 +107,7 @@ pub fn uumain(args: Vec<String>) -> int {
     return 0;
 }
 
-fn open(path: String) -> io::BufferedReader<Box<Reader>> {
+fn open(path: String) -> io::BufferedReader<Box<Reader+'static>> {
     let mut file_buf;
     if path.as_slice() == "-" {
         io::BufferedReader::new(box io::stdio::stdin_raw() as Box<Reader>)
diff --git a/src/uniq/uniq.rs b/src/uniq/uniq.rs
index db63bcd08..e95961666 100644
--- a/src/uniq/uniq.rs
+++ b/src/uniq/uniq.rs
@@ -190,7 +190,7 @@ pub fn uumain(args: Vec<String>) -> int {
     0
 }
 
-fn open_input_file(in_file_name: String) -> io::BufferedReader<Box<Reader>> {
+fn open_input_file(in_file_name: String) -> io::BufferedReader<Box<Reader+'static>> {
     let in_file = if in_file_name.as_slice() == "-" {
         box io::stdio::stdin_raw() as Box<Reader>
     } else {
@@ -201,7 +201,7 @@ fn open_input_file(in_file_name: String) -> io::BufferedReader<Box<Reader>> {
     io::BufferedReader::new(in_file)
 }
 
-fn open_output_file(out_file_name: String) -> io::BufferedWriter<Box<Writer>> {
+fn open_output_file(out_file_name: String) -> io::BufferedWriter<Box<Writer+'static>> {
     let out_file = if out_file_name.as_slice() == "-" {
         box io::stdio::stdout_raw() as Box<Writer>
     } else {
diff --git a/src/wc/wc.rs b/src/wc/wc.rs
index 4877c9930..a6cb9499d 100644
--- a/src/wc/wc.rs
+++ b/src/wc/wc.rs
@@ -230,7 +230,7 @@ fn print_stats(filename: &str, line_count: uint, word_count: uint, char_count: u
     }
 }
 
-fn open(path: String) -> StdResult<BufferedReader<Box<Reader>>, int> {
+fn open(path: String) -> StdResult<BufferedReader<Box<Reader+'static>>, int> {
     if "-" == path.as_slice() {
         let reader = box stdin_raw() as Box<Reader>;
         return Ok(BufferedReader::new(reader));