diff --git a/codegen/main.rs b/codegen/main.rs
index 5a6c05b..c182a70 100644
--- a/codegen/main.rs
+++ b/codegen/main.rs
@@ -8,7 +8,7 @@ pub mod status;
 pub mod read_method;
 
 fn main() {
-    spawn(proc() {
+    spawn(move || {
         let output_dir = Path::new(os::getenv("OUT_DIR").unwrap());
         read_method::generate(output_dir).unwrap();
     });
diff --git a/src/http/headers/serialization_utils.rs b/src/http/headers/serialization_utils.rs
index 79784f0..3f18873 100644
--- a/src/http/headers/serialization_utils.rs
+++ b/src/http/headers/serialization_utils.rs
@@ -53,8 +53,10 @@ pub fn comma_split(value: &str) -> Vec<String> {
 }
 
 pub fn comma_split_iter<'a>(value: &'a str)
-        -> ::std::iter::Map<'a, &'a str, &'a str, ::std::str::CharSplits<'a, char>> {
-    value.split(',').map(|w| w.trim_left())
+        -> ::std::iter::Map<&'a str, &'a str, ::std::str::CharSplits<'a, char>, fn(&str) -> &str> {
+    fn trim(w: &str) -> &str {w.trim_left()}
+    
+    value.split(',').map(trim)
 }
 
 pub trait WriterUtil: Writer {
diff --git a/src/http/server/mod.rs b/src/http/server/mod.rs
index 427b3e0..666051c 100644
--- a/src/http/server/mod.rs
+++ b/src/http/server/mod.rs
@@ -35,7 +35,7 @@ pub trait Server: Send + Clone {
         };
         debug!("listening");
         let (perf_sender, perf_receiver) = channel();
-        spawn(proc() {
+        spawn(move || {
             perf_dumper(perf_receiver);
         });
         loop {
@@ -54,7 +54,7 @@ pub trait Server: Send + Clone {
             };
             let child_perf_sender = perf_sender.clone();
             let child_self = self.clone();
-            spawn(proc() {
+            spawn(move || {
                 let mut time_start = time_start;
                 let mut stream = BufferedStream::new(stream);
                 debug!("accepted connection");