diff --git a/src/lib.rs b/src/lib.rs
index 52492014..6ab96494 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,6 +38,7 @@ extern crate want;
 extern crate test;
 
 pub use http::{
+    header,
     HeaderMap,
     Method,
     Request,
diff --git a/src/proto/h1/date.rs b/src/proto/h1/date.rs
index 6a2a6c56..38a18e1e 100644
--- a/src/proto/h1/date.rs
+++ b/src/proto/h1/date.rs
@@ -37,8 +37,8 @@ impl CachedDate {
 
     fn update(&mut self, now: time::Timespec) {
         self.pos = 0;
-        write!(self, "{}", time::at_utc(now).rfc822()).unwrap();
-        assert!(self.pos == DATE_VALUE_LENGTH);
+        let _ = write!(self, "{}", time::at_utc(now).rfc822());
+        debug_assert!(self.pos == DATE_VALUE_LENGTH);
         self.next_update = now + Duration::seconds(1);
         self.next_update.nsec = 0;
     }
@@ -56,4 +56,4 @@ impl fmt::Write for CachedDate {
 #[test]
 fn test_date_len() {
     assert_eq!(DATE_VALUE_LENGTH, "Sun, 06 Nov 1994 08:49:37 GMT".len());
-}
\ No newline at end of file
+}
diff --git a/src/proto/h1/role.rs b/src/proto/h1/role.rs
index 7f1274e1..a9d066c4 100644
--- a/src/proto/h1/role.rs
+++ b/src/proto/h1/role.rs
@@ -1002,7 +1002,7 @@ mod tests {
         b.iter(|| {
             let mut vec = Vec::new();
             Server::encode(head.clone(), Some(BodyLength::Known(10)), &mut None, false, &mut vec).unwrap();
-            //assert_eq!(vec.len(), len);
+            assert_eq!(vec.len(), len);
             ::test::black_box(vec);
         })
     }