auto merge of #12232 : kballard/rust/taskbuilder-is-a-builder, r=alexcrichton

Delete all the documentation from std::task that references linked
failure.

Tweak TaskBuilder to be more builder-like. `.name()` is now `.named()` and
`.add_wrapper()` is now `.with_wrapper()`. Remove `.watched()` and
`.unwatched()` as they didn't actually do anything.

Closes #6399.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/libnative/task.rs b/src/libnative/task.rs
index d8f410834f2..b0f063ff06e 100644
--- a/src/libnative/task.rs
+++ b/src/libnative/task.rs
@@ -57,7 +57,6 @@ pub fn spawn(f: proc()) {
 /// inside the task.
 pub fn spawn_opts(opts: TaskOpts, f: proc()) {
     let TaskOpts {
-        watched: _watched,
         notify_chan, name, stack_size,
         logger, stderr, stdout,
     } = opts;