improve logs

src/header/map.rs

@@ -480,6 +480,10 @@ impl<T> HeaderMap<T> {
     ///
     /// More capacity than requested may be allocated.
     ///
+    /// # Errors
+    ///
+    /// This function may return an error if `HeaderMap` exceeds max capacity
+    ///
     /// # Examples
     ///
     /// ```
@@ -1222,6 +1226,10 @@ impl<T> HeaderMap<T> {
     /// The key is not updated, though; this matters for types that can be `==`
     /// without being identical.
     ///
+    /// # Errors
+    ///
+    /// This function may return an error if `HeaderMap` exceeds max capacity
+    ///
     /// # Examples
     ///
     /// ```
@@ -1358,6 +1366,10 @@ impl<T> HeaderMap<T> {
     /// updated, though; this matters for types that can be `==` without being
     /// identical.
     ///
+    /// # Errors
+    ///
+    /// This function may return an error if `HeaderMap` exceeds max capacity
+    ///
     /// # Examples
     ///
     /// ```
@@ -2452,6 +2464,10 @@ impl<'a, T> Entry<'a, T> {
     ///
     /// Returns a mutable reference to the **first** value in the entry.
     ///
+    /// # Errors
+    ///
+    /// This function may return an error if `HeaderMap` exceeds max capacity
+    ///
     /// # Examples
     ///
     /// ```

src/header/value.rs

@@ -492,7 +492,7 @@ mod from_header_name_tests {
         map.insert(
             name::ACCEPT,
             name::HeaderName::from_bytes(b"hello-world").unwrap().into(),
-        ).unwrap();
+        );
 
         assert_eq!(
             map.get(name::UPGRADE).unwrap(),