auto merge of #10662 : alexcrichton/rust/thread-detach, r=pcwalton

This has one commit from a separate pull request (because these commits depend on that one), but otherwise the extra details can be found in the commit messages. The `rt::thread` module has been generally cleaned up for everyday safe usage (and it's a bug if it's not safe).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/task/spawn.rs b/src/libstd/task/spawn.rs
index 6c1c28c9805..198fe596a89 100644
--- a/src/libstd/task/spawn.rs
+++ b/src/libstd/task/spawn.rs
@@ -139,7 +139,7 @@ pub fn spawn_raw(mut opts: TaskOpts, f: proc()) {
             let join_task = do Task::build_child(None) {
                 debug!("running join task");
                 let thread_port = thread_port_cell.take();
-                let thread: Thread = thread_port.recv();
+                let thread: Thread<()> = thread_port.recv();
                 thread.join();
             };