diff --git a/src/fold/fold.rs b/src/fold/fold.rs
index 48e488cee..80e075192 100644
--- a/src/fold/fold.rs
+++ b/src/fold/fold.rs
@@ -82,7 +82,7 @@ pub fn uumain(args: Vec<String>) -> int {
 }
 
 fn handle_obsolete(args: &[String]) -> (Vec<String>, Option<String>) {
-    let mut args = Vec::<String>::from_slice(args);
+    let mut args = args.to_vec();
     let mut i = 0;
     while i < args.len() {
         if args[i].as_slice().char_at(0) == '-' && args[i].len() > 1 && args[i].as_slice().char_at(1).is_digit() {
diff --git a/src/hashsum/hashsum.rs b/src/hashsum/hashsum.rs
index f4ade0523..6f7969aa7 100644
--- a/src/hashsum/hashsum.rs
+++ b/src/hashsum/hashsum.rs
@@ -110,7 +110,7 @@ pub fn uumain(args: Vec<String>) -> int {
         getopts::optflag("V", "version", "output version information and exit"),
     );
 
-    opts.push_all_move(get_algo_opts(binary_name.as_slice()));
+    opts.extend(get_algo_opts(binary_name.as_slice()).into_iter());
 
     let matches = match getopts::getopts(args.tail(), opts.as_slice()) {
         Ok(m) => m,
diff --git a/src/head/head.rs b/src/head/head.rs
index 4cf95035c..8f7f0d26f 100644
--- a/src/head/head.rs
+++ b/src/head/head.rs
@@ -133,7 +133,7 @@ pub fn uumain(args: Vec<String>) -> int {
 // In case is found, the options vector will get rid of that object so that
 // getopts works correctly.
 fn obsolete(options: &[String]) -> (Vec<String>, Option<uint>) {
-    let mut options: Vec<String> = Vec::from_slice(options);
+    let mut options: Vec<String> = options.to_vec();
     let mut a = 0;
     let b = options.len();
 
diff --git a/src/id/id.rs b/src/id/id.rs
index 599ff4a78..f58c2f4c2 100644
--- a/src/id/id.rs
+++ b/src/id/id.rs
@@ -51,17 +51,20 @@ mod audit {
     pub type au_emod_t  = c_uint;
     pub type au_class_t = c_int;
 
+    #[repr(C)]
     pub struct au_mask {
         pub am_success: c_uint,
         pub am_failure: c_uint
     }
     pub type au_mask_t = au_mask;
 
+    #[repr(C)]
     pub struct au_tid_addr {
         pub port: dev_t,
     }
     pub type au_tid_addr_t = au_tid_addr;
 
+    #[repr(C)]
     pub struct c_auditinfo_addr {
         pub ai_auid: au_id_t,           /* Audit user ID */
         pub ai_mask: au_mask_t,         /* Audit masks. */
diff --git a/src/seq/seq.rs b/src/seq/seq.rs
index c6eb9106a..fc2d60cba 100644
--- a/src/seq/seq.rs
+++ b/src/seq/seq.rs
@@ -65,7 +65,7 @@ fn parse_options(args: Vec<String>, options: &mut SeqOptions) -> Result<Vec<Stri
                 },
                 "-w" | "--widths" => options.widths = true,
                 "--" => {
-                    seq_args.push_all_move(iter.collect());
+                    seq_args.extend(iter);
                     break;
                 },
                 _ => {
diff --git a/src/tail/tail.rs b/src/tail/tail.rs
index e40a36d4f..712da2a04 100644
--- a/src/tail/tail.rs
+++ b/src/tail/tail.rs
@@ -119,7 +119,7 @@ pub fn uumain(args: Vec<String>) -> int {
 // In case is found, the options vector will get rid of that object so that
 // getopts works correctly.
 fn obsolete (options: &[String]) -> (Vec<String>, Option<uint>) {
-    let mut options: Vec<String> = Vec::from_slice(options);
+    let mut options: Vec<String> = options.to_vec();
     let mut a = 0;
     let b = options.len();
 
diff --git a/src/tee/tee.rs b/src/tee/tee.rs
index 3e5445f97..6439cfc28 100644
--- a/src/tee/tee.rs
+++ b/src/tee/tee.rs
@@ -59,7 +59,8 @@ fn options(args: &[String]) -> Result<Options, ()> {
         let help = format!("{}\n\nUsage:\n  {} {}\n\n{}\n{}",
                            version, program, arguments, usage(brief, opts),
                            comment);
-        let names = m.free.clone().into_iter().collect::<Vec<String>>().append_one("-".to_string());
+        let mut names = m.free.clone().into_iter().collect::<Vec<String>>();
+        names.push("-".to_string());
         let to_print = if m.opt_present("help") { Some(help) }
                        else if m.opt_present("version") { Some(version) }
                        else { None };