message: remutex: try! -> ?
diff: @@ -79,7 +79,7 @@ impl<T> ReentrantMutex<T> {
  /// acquired.
  pub fn try_lock(&self) -> TryLockResult<ReentrantMutexGuard<T>> {
  if unsafe { self.inner.try_lock() } {
  - Ok(try!(ReentrantMutexGuard::new(&self)))
  + Ok(ReentrantMutexGuard::new(&self)?)
  } else {
  Err(TryLockError::WouldBlock)
  }
  