docs: fix all rustdoc warnings (#1474)

tokio-timer/src/clock/mod.rs

@@ -12,8 +12,8 @@
 //!
 //! [n]: fn.now.html
 //! [`Now`]: trait.Now.html
-//! [`Instant`]: https://doc.rust-lang.org/std/time/struct.Instant.html
-//! [`Instant::now`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.now
+//! [`Instant`]: std::time::Instant
+//! [`Instant::now`]: std::time::Instant::now
 //! [`with_default`]: fn.with_default.html
 
 mod now;
@@ -31,8 +31,8 @@ use std::time::Instant;
 /// `Clock` instances return [`Instant`] values corresponding to "now". The source
 /// of these values is configurable. The default source is [`Instant::now`].
 ///
-/// [`Instant`]: https://doc.rust-lang.org/std/time/struct.Instant.html
-/// [`Instant::now`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.now
+/// [`Instant`]: std::time::Instant
+/// [`Instant::now`]: std::time::Instant::now
 #[derive(Default, Clone)]
 pub struct Clock {
     now: Option<Arc<dyn Now>>,
@@ -87,7 +87,7 @@ impl Clock {
     /// Return a new `Clock` instance that uses [`Instant::now`] as the source
     /// of time.
     ///
-    /// [`Instant::now`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.now
+    /// [`Instant::now`]: std::time::Instant::now
     pub fn system() -> Clock {
         Clock { now: None }
     }

tokio-timer/src/clock/now.rs

@@ -8,7 +8,7 @@ use std::time::Instant;
 /// Implementations must ensure that calls to `now` return monotonically
 /// increasing [`Instant`] values.
 ///
-/// [`Instant`]: https://doc.rust-lang.org/std/time/struct.Instant.html
+/// [`Instant`]: std::time::Instant
 pub trait Now: Send + Sync + 'static {
     /// Returns an instant corresponding to "now".
     fn now(&self) -> Instant;

tokio-timer/src/lib.rs

@@ -31,10 +31,10 @@
 //!
 //! [`Delay`]: struct.Delay.html
 //! [`DelayQueue`]: struct.DelayQueue.html
-//! [`Throttle`]: throttle/struct.Throttle.html
+//! [`Throttle`]: throttle::Throttle
 //! [`Timeout`]: struct.Timeout.html
 //! [`Interval`]: struct.Interval.html
-//! [`Timer`]: timer/struct.Timer.html
+//! [`Timer`]: timer::Timer
 
 pub mod clock;
 pub mod delay_queue;

tokio-timer/src/timer/handle.rs

@@ -108,7 +108,7 @@ impl Handle {
     ///
     /// See [type] level documentation for more ways to obtain a `Handle` value.
     ///
-    /// [`with_default`]: ../fn.with_default.html
+    /// [`with_default`]: fn.with_default
     /// [type]: #
     pub fn current() -> Handle {
         let private =

tokio-timer/src/timer/mod.rs

@@ -23,12 +23,12 @@
 //!
 //! [`Timer`]: struct.Timer.html
 //! [`Handle`]: struct.Handle.html
-//! [`Delay`]: ../struct.Delay.html
-//! [`Now`]: ../clock/trait.Now.html
-//! [`Now::now`]: ../clock/trait.Now.html#method.now
+//! [`Delay`]: Delay
+//! [`Now`]: clock::Now
+//! [`Now::now`]: clock::Now::now
 //! [`SystemNow`]: struct.SystemNow.html
-//! [`Instant`]: https://doc.rust-lang.org/std/time/struct.Instant.html
-//! [`Instant::now`]: https://doc.rust-lang.org/std/time/struct.Instant.html#method.now
+//! [`Instant`]: std::time::Instant
+//! [`Instant::now`]: std::time::Instant::now
 
 // This allows the usage of the old `Now` trait.
 #![allow(deprecated)]
@@ -115,9 +115,9 @@ use tokio_executor::park::{Park, ParkThread, Unpark};
 /// either be canceled (dropped) or their associated entries will reach level
 /// zero and be notified.
 ///
-/// [`Delay`]: ../struct.Delay.html
-/// [`Interval`]: ../struct.Interval.html
-/// [`Timeout`]: ../struct.Timeout.html
+/// [`Delay`]: struct.Delay.html
+/// [`Interval`]: struct.Interval.html
+/// [`Timeout`]: struct.Timeout.html
 /// [paper]: http://www.cs.columbia.edu/~nahum/w6998/papers/ton97-timing-wheels.pdf
 /// [`handle`]: #method.handle
 /// [`turn`]: #method.turn