Remove leading :: from paths in doc examples

src/libcore/iter/traits/collect.rs

@@ -167,7 +167,7 @@ pub trait FromIterator<A>: Sized {
 /// // and we'll implement IntoIterator
 /// impl IntoIterator for MyCollection {
 ///     type Item = i32;
-///     type IntoIter = ::std::vec::IntoIter<Self::Item>;
+///     type IntoIter = std::vec::IntoIter<Self::Item>;
 ///
 ///     fn into_iter(self) -> Self::IntoIter {
 ///         self.0.into_iter()

src/libcore/ops/unsize.rs

@@ -76,7 +76,7 @@ impl<T: ?Sized+Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for *const T {}
 /// ```
 /// # #![feature(dispatch_from_dyn, unsize)]
 /// # use std::{ops::DispatchFromDyn, marker::Unsize};
-/// # struct Rc<T: ?Sized>(::std::rc::Rc<T>);
+/// # struct Rc<T: ?Sized>(std::rc::Rc<T>);
 /// impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Rc<U>> for Rc<T>
 /// where
 ///     T: Unsize<U>,

src/libcore/str/mod.rs

@@ -176,7 +176,7 @@ Section: Creating a string
 /// ```
 /// fn from_utf8_lossy<F>(mut input: &[u8], mut push: F) where F: FnMut(&str) {
 ///     loop {
-///         match ::std::str::from_utf8(input) {
+///         match std::str::from_utf8(input) {
 ///             Ok(valid) => {
 ///                 push(valid);
 ///                 break
@@ -184,7 +184,7 @@ Section: Creating a string
 ///             Err(error) => {
 ///                 let (valid, after_valid) = input.split_at(error.valid_up_to());
 ///                 unsafe {
-///                     push(::std::str::from_utf8_unchecked(valid))
+///                     push(std::str::from_utf8_unchecked(valid))
 ///                 }
 ///                 push("\u{FFFD}");
 ///