diff --git a/src/lib.rs b/src/lib.rs
index 7dc40370b..06c42c30f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2373,7 +2373,9 @@ pub trait Itertools: Iterator {
     /// For example the sequence *Ok(1), Ok(2), Ok(3)* will result in a
     /// computation like this:
     ///
-    /// ```ignore
+    /// ```no_run
+    /// # let start = 0;
+    /// # let f = |x, y| x + y;
     /// let mut accum = start;
     /// accum = f(accum, 1);
     /// accum = f(accum, 2);
@@ -3981,9 +3983,10 @@ where
 /// **Panics** on assertion failure with a message that shows the
 /// two iteration elements.
 ///
-/// ```ignore
+/// ```should_panic
+/// # use itertools::assert_equal;
 /// assert_equal("exceed".split('c'), "excess".split('c'));
-/// // ^PANIC: panicked at 'Failed assertion Some("eed") == Some("ess") for iteration 1',
+/// // ^PANIC: panicked at 'Failed assertion Some("eed") == Some("ess") for iteration 1'.
 /// ```
 pub fn assert_equal<I, J>(a: I, b: J)
 where
diff --git a/src/size_hint.rs b/src/size_hint.rs
index 7ba6f443b..857e0c4c6 100644
--- a/src/size_hint.rs
+++ b/src/size_hint.rs
@@ -38,20 +38,6 @@ pub fn sub_scalar(sh: SizeHint, x: usize) -> SizeHint {
 }
 
 /// Multiply `SizeHint` correctly
-///
-/// ```ignore
-/// use std::usize;
-/// use itertools::size_hint;
-///
-/// assert_eq!(size_hint::mul((3, Some(4)), (3, Some(4))),
-///            (9, Some(16)));
-///
-/// assert_eq!(size_hint::mul((3, Some(4)), (usize::MAX, None)),
-///            (usize::MAX, None));
-///
-/// assert_eq!(size_hint::mul((3, None), (0, Some(0))),
-///            (0, Some(0)));
-/// ```
 #[inline]
 pub fn mul(a: SizeHint, b: SizeHint) -> SizeHint {
     let low = a.0.saturating_mul(b.0);
@@ -100,3 +86,10 @@ pub fn min(a: SizeHint, b: SizeHint) -> SizeHint {
     };
     (lower, upper)
 }
+
+#[test]
+fn mul_size_hints() {
+    assert_eq!(mul((3, Some(4)), (3, Some(4))), (9, Some(16)));
+    assert_eq!(mul((3, Some(4)), (usize::MAX, None)), (usize::MAX, None));
+    assert_eq!(mul((3, None), (0, Some(0))), (0, Some(0)));
+}