3 files changed, 5 insertions, 12 deletions
diff --git a/src/libstd/rt/args.rs b/src/libstd/rt/args.rs
index e77a2bbd0b9..cf8bac31057 100644
--- a/src/libstd/rt/args.rs
+++ b/src/libstd/rt/args.rs
@@ -19,8 +19,6 @@
 //!
 //! FIXME #7756: Would be nice for this to not exist.
 
-#[cfg(stage0)]
-use core::prelude::v1::*;
 use vec::Vec;
 
 /// One-time global initialization.
@@ -141,8 +139,6 @@ mod imp {
           target_os = "ios",
           target_os = "windows"))]
 mod imp {
-    #[cfg(stage0)]
-    use core::prelude::v1::*;
     use vec::Vec;
 
     pub unsafe fn init(_argc: isize, _argv: *const *const u8) {
diff --git a/src/libstd/rt/backtrace.rs b/src/libstd/rt/backtrace.rs
index 18d93cba8bc..9e7ed89bae1 100644
--- a/src/libstd/rt/backtrace.rs
+++ b/src/libstd/rt/backtrace.rs
@@ -12,9 +12,6 @@
 
 #![allow(non_camel_case_types)]
 
-#[cfg(stage0)]
-use prelude::v1::*;
-
 use env;
 use sync::atomic::{self, Ordering};
 
diff --git a/src/libstd/rt/unwind/mod.rs b/src/libstd/rt/unwind/mod.rs
index bb43eec8db1..4feb2d49a98 100644
--- a/src/libstd/rt/unwind/mod.rs
+++ b/src/libstd/rt/unwind/mod.rs
@@ -77,18 +77,18 @@ use sys_common::mutex::Mutex;
 // implementations. One goes through SEH on Windows and the other goes through
 // libgcc via the libunwind-like API.
 
-// *-pc-windows-msvc
-#[cfg(all(windows, target_env = "msvc"))]
+// i686-pc-windows-msvc
+#[cfg(all(windows, target_arch = "x86", target_env = "msvc"))]
 #[path = "seh.rs"] #[doc(hidden)]
 pub mod imp;
 
-// x86_64-pc-windows-gnu
-#[cfg(all(windows, target_arch="x86_64", target_env="gnu"))]
+// x86_64-pc-windows-*
+#[cfg(all(windows, target_arch = "x86_64"))]
 #[path = "seh64_gnu.rs"] #[doc(hidden)]
 pub mod imp;
 
 // i686-pc-windows-gnu and all others
-#[cfg(any(unix, all(windows, target_arch="x86", target_env="gnu")))]
+#[cfg(any(unix, all(windows, target_arch = "x86", target_env = "gnu")))]
 #[path = "gcc.rs"] #[doc(hidden)]
 pub mod imp;