2 files changed, 6 insertions, 5 deletions
diff --git a/src/libstd/rt/backtrace.rs b/src/libstd/rt/backtrace.rs
index 4229e9ad32c..766901fa04f 100644
--- a/src/libstd/rt/backtrace.rs
+++ b/src/libstd/rt/backtrace.rs
@@ -603,6 +603,7 @@ mod imp {
 mod imp {
     use c_str::CString;
     use container::Container;
+    use intrinsics;
     use io::{IoResult, Writer};
     use libc;
     use mem;
@@ -610,11 +611,10 @@ mod imp {
     use option::{Some, None};
     use path::Path;
     use result::{Ok, Err};
+    use rt::mutex::{StaticNativeMutex, NATIVE_MUTEX_INIT};
+    use slice::ImmutableVector;
     use str::StrSlice;
     use unstable::dynamic_lib::DynamicLibrary;
-    use intrinsics;
-    use unstable::mutex::{StaticNativeMutex, NATIVE_MUTEX_INIT};
-    use slice::ImmutableVector;
 
     #[allow(non_snake_case_functions)]
     extern "system" {
diff --git a/src/libstd/rt/mod.rs b/src/libstd/rt/mod.rs
index e8df7465a74..a68a632bc37 100644
--- a/src/libstd/rt/mod.rs
+++ b/src/libstd/rt/mod.rs
@@ -57,10 +57,11 @@ Several modules in `core` are clients of `rt`:
 use failure;
 use rustrt;
 
-// TODO: dox
+// Reexport some of our utilities which are expected by other crates.
 pub use self::util::{default_sched_threads, min_stack, running_on_valgrind};
 
-// TODO: dox
+// Reexport functionality from librustrt and other crates underneath the
+// standard library which work together to create the entire runtime.
 pub use alloc::{heap, libc_heap};
 pub use rustrt::{task, local, mutex, exclusive, stack, args, rtio};
 pub use rustrt::{Stdio, Stdout, Stderr, begin_unwind, begin_unwind_fmt};