diff --git a/src/libcollections/borrow.rs b/src/libcollections/borrow.rs
index f174cc09bcd3525a324bf64635912b9fd7742c91..ce20a25d13af38ac38f8402669e6f4d5582f2ef4 100644
--- a/src/libcollections/borrow.rs
+++ b/src/libcollections/borrow.rs
@@ -95,12 +95,12 @@ pub enum Cow<'a, B: ?Sized + 'a>
 {
     /// Borrowed data.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Borrowed(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a B),
+    Borrowed(#[stable(feature = "rust1", since = "1.0.0")] &'a B),
 
     /// Owned data.
     #[stable(feature = "rust1", since = "1.0.0")]
     Owned(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] <B as ToOwned>::Owned
+        #[stable(feature = "rust1", since = "1.0.0")] <B as ToOwned>::Owned
     ),
 }
 
diff --git a/src/libcollections/btree/map.rs b/src/libcollections/btree/map.rs
index 7207e7b151c1eae3966022d942574d4cc9a672c2..2a950ce0ab72d58404aa0981513ceb1fa9effbee 100644
--- a/src/libcollections/btree/map.rs
+++ b/src/libcollections/btree/map.rs
@@ -238,13 +238,13 @@ pub enum Entry<'a, K: 'a, V: 'a> {
     /// A vacant Entry
     #[stable(feature = "rust1", since = "1.0.0")]
     Vacant(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] VacantEntry<'a, K, V>
+        #[stable(feature = "rust1", since = "1.0.0")] VacantEntry<'a, K, V>
     ),
 
     /// An occupied Entry
     #[stable(feature = "rust1", since = "1.0.0")]
     Occupied(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] OccupiedEntry<'a, K, V>
+        #[stable(feature = "rust1", since = "1.0.0")] OccupiedEntry<'a, K, V>
     ),
 }
 
diff --git a/src/libcore/intrinsics.rs b/src/libcore/intrinsics.rs
index 2e2292d63f4c63addd1e0f23f8fb6026bd58754e..760631e594f6d4e68f99e69db1933b0561740a21 100644
--- a/src/libcore/intrinsics.rs
+++ b/src/libcore/intrinsics.rs
@@ -559,8 +559,5 @@ pub fn volatile_copy_nonoverlapping_memory<T>(dst: *mut T, src: *const T,
     /// platforms this is a `*mut *mut T` which is filled in by the compiler and
     /// on MSVC it's `*mut [usize; 2]`. For more information see the compiler's
     /// source as well as std's catch implementation.
-    #[cfg(not(stage0))]
     pub fn try(f: fn(*mut u8), data: *mut u8, local_ptr: *mut u8) -> i32;
-    #[cfg(stage0)]
-    pub fn try(f: fn(*mut u8), data: *mut u8) -> *mut u8;
 }
diff --git a/src/libcore/option.rs b/src/libcore/option.rs
index eeb0c173b9b7b8238f872abdc042402b572f9a74..e38cf9af010b9f9953fff8c59a0def8c0c36283e 100644
--- a/src/libcore/option.rs
+++ b/src/libcore/option.rs
@@ -169,7 +169,7 @@ pub enum Option<T> {
     None,
     /// Some value `T`
     #[stable(feature = "rust1", since = "1.0.0")]
-    Some(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] T)
+    Some(#[stable(feature = "rust1", since = "1.0.0")] T)
 }
 
 /////////////////////////////////////////////////////////////////////////////
diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index 9bd6ed12798a5efc58703e91519ce5696e5c26f5..f6703d16ad997e988e347bb45720356985b5c572 100644
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -250,11 +250,11 @@
 pub enum Result<T, E> {
     /// Contains the success value
     #[stable(feature = "rust1", since = "1.0.0")]
-    Ok(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] T),
+    Ok(#[stable(feature = "rust1", since = "1.0.0")] T),
 
     /// Contains the error value
     #[stable(feature = "rust1", since = "1.0.0")]
-    Err(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] E)
+    Err(#[stable(feature = "rust1", since = "1.0.0")] E)
 }
 
 /////////////////////////////////////////////////////////////////////////////
diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 7220690469c2a62080bb6170efdf23f7e2f2baa8..051829fbafb01933104037a36f8851a8cff3e2d0 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -1402,13 +1402,13 @@ pub enum Entry<'a, K: 'a, V: 'a> {
     /// An occupied Entry.
     #[stable(feature = "rust1", since = "1.0.0")]
     Occupied(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] OccupiedEntry<'a, K, V>
+        #[stable(feature = "rust1", since = "1.0.0")] OccupiedEntry<'a, K, V>
     ),
 
     /// A vacant Entry.
     #[stable(feature = "rust1", since = "1.0.0")]
     Vacant(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] VacantEntry<'a, K, V>
+        #[stable(feature = "rust1", since = "1.0.0")] VacantEntry<'a, K, V>
     ),
 }
 
diff --git a/src/libstd/env.rs b/src/libstd/env.rs
index fa48efb27881b3f5b5a4f8d1303176870c3cad9e..47558598ff72af312f4f648b30cbc3105f8119ce 100644
--- a/src/libstd/env.rs
+++ b/src/libstd/env.rs
@@ -218,7 +218,7 @@ pub enum VarError {
     /// valid unicode data. The found data is returned as a payload of this
     /// variant.
     #[stable(feature = "env", since = "1.0.0")]
-    NotUnicode(#[cfg_attr(not(stage0), stable(feature = "env", since = "1.0.0"))] OsString),
+    NotUnicode(#[stable(feature = "env", since = "1.0.0")] OsString),
 }
 
 #[stable(feature = "env", since = "1.0.0")]
diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index abb47b694184c2b1ee3c8901bfe5d62df1619fd8..6bdfdcd364aa703435c5e55b9444c9efc034a2f2 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -1175,7 +1175,7 @@ pub trait Seek {
 pub enum SeekFrom {
     /// Set the offset to the provided number of bytes.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Start(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] u64),
+    Start(#[stable(feature = "rust1", since = "1.0.0")] u64),
 
     /// Set the offset to the size of this object plus the specified number of
     /// bytes.
@@ -1183,7 +1183,7 @@ pub enum SeekFrom {
     /// It is possible to seek beyond the end of an object, but it's an error to
     /// seek before byte 0.
     #[stable(feature = "rust1", since = "1.0.0")]
-    End(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] i64),
+    End(#[stable(feature = "rust1", since = "1.0.0")] i64),
 
     /// Set the offset to the current position plus the specified number of
     /// bytes.
@@ -1191,7 +1191,7 @@ pub enum SeekFrom {
     /// It is possible to seek beyond the end of an object, but it's an error to
     /// seek before byte 0.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Current(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] i64),
+    Current(#[stable(feature = "rust1", since = "1.0.0")] i64),
 }
 
 fn read_until<R: BufRead + ?Sized>(r: &mut R, delim: u8, buf: &mut Vec<u8>)
diff --git a/src/libstd/net/addr.rs b/src/libstd/net/addr.rs
index 89c51c70843533a155240488a1c8764db9043a01..6ce6777d11eff54d8c5dbe8f247363250f3c9117 100644
--- a/src/libstd/net/addr.rs
+++ b/src/libstd/net/addr.rs
@@ -32,10 +32,10 @@
 pub enum SocketAddr {
     /// An IPv4 socket address which is a (ip, port) combination.
     #[stable(feature = "rust1", since = "1.0.0")]
-    V4(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] SocketAddrV4),
+    V4(#[stable(feature = "rust1", since = "1.0.0")] SocketAddrV4),
     /// An IPv6 socket address
     #[stable(feature = "rust1", since = "1.0.0")]
-    V6(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] SocketAddrV6),
+    V6(#[stable(feature = "rust1", since = "1.0.0")] SocketAddrV6),
 }
 
 /// An IPv4 socket address which is a (ip, port) combination.
diff --git a/src/libstd/net/ip.rs b/src/libstd/net/ip.rs
index 8a4d7e3e2c2a5dfa00beb52de633176e3d5c46da..68075af61cf5e8e0e570b61bd3bf07484997883d 100644
--- a/src/libstd/net/ip.rs
+++ b/src/libstd/net/ip.rs
@@ -27,10 +27,10 @@
 pub enum IpAddr {
     /// Representation of an IPv4 address.
     #[stable(feature = "ip_addr", since = "1.7.0")]
-    V4(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.7.0"))] Ipv4Addr),
+    V4(#[stable(feature = "ip_addr", since = "1.7.0")] Ipv4Addr),
     /// Representation of an IPv6 address.
     #[stable(feature = "ip_addr", since = "1.7.0")]
-    V6(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.7.0"))] Ipv6Addr),
+    V6(#[stable(feature = "ip_addr", since = "1.7.0")] Ipv6Addr),
 }
 
 /// Representation of an IPv4 address.
diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index 3798fb76ad6a5784c8c7118d2004c9dcafd7601d..f2154a616c5b46e91b648f8da997a45680b9b449 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -268,33 +268,33 @@ fn parse_two_comps(mut path: &[u8], f: fn(u8) -> bool) -> Option<(&[u8], &[u8])>
 pub enum Prefix<'a> {
     /// Prefix `\\?\`, together with the given component immediately following it.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Verbatim(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr),
+    Verbatim(#[stable(feature = "rust1", since = "1.0.0")] &'a OsStr),
 
     /// Prefix `\\?\UNC\`, with the "server" and "share" components following it.
     #[stable(feature = "rust1", since = "1.0.0")]
     VerbatimUNC(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr,
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr,
+        #[stable(feature = "rust1", since = "1.0.0")] &'a OsStr,
+        #[stable(feature = "rust1", since = "1.0.0")] &'a OsStr,
     ),
 
     /// Prefix like `\\?\C:\`, for the given drive letter
     #[stable(feature = "rust1", since = "1.0.0")]
-    VerbatimDisk(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] u8),
+    VerbatimDisk(#[stable(feature = "rust1", since = "1.0.0")] u8),
 
     /// Prefix `\\.\`, together with the given component immediately following it.
     #[stable(feature = "rust1", since = "1.0.0")]
-    DeviceNS(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr),
+    DeviceNS(#[stable(feature = "rust1", since = "1.0.0")] &'a OsStr),
 
     /// Prefix `\\server\share`, with the given "server" and "share" components.
     #[stable(feature = "rust1", since = "1.0.0")]
     UNC(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr,
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr,
+        #[stable(feature = "rust1", since = "1.0.0")] &'a OsStr,
+        #[stable(feature = "rust1", since = "1.0.0")] &'a OsStr,
     ),
 
     /// Prefix `C:` for the given disk drive.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Disk(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] u8),
+    Disk(#[stable(feature = "rust1", since = "1.0.0")] u8),
 }
 
 impl<'a> Prefix<'a> {
@@ -537,7 +537,7 @@ pub enum Component<'a> {
     /// Does not occur on Unix.
     #[stable(feature = "rust1", since = "1.0.0")]
     Prefix(
-        #[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] PrefixComponent<'a>
+        #[stable(feature = "rust1", since = "1.0.0")] PrefixComponent<'a>
     ),
 
     /// The root directory component, appears after any prefix and before anything else
@@ -554,7 +554,7 @@ pub enum Component<'a> {
 
     /// A normal component, i.e. `a` and `b` in `a/b`
     #[stable(feature = "rust1", since = "1.0.0")]
-    Normal(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] &'a OsStr),
+    Normal(#[stable(feature = "rust1", since = "1.0.0")] &'a OsStr),
 }
 
 impl<'a> Component<'a> {
diff --git a/src/libstd/sync/mpsc/mod.rs b/src/libstd/sync/mpsc/mod.rs
index 9487295fd1ad66f9079678f80684c3c8853b1827..fadca390986ceb3f7f5a87751a627cb64f9ac2f7 100644
--- a/src/libstd/sync/mpsc/mod.rs
+++ b/src/libstd/sync/mpsc/mod.rs
@@ -385,12 +385,12 @@ pub enum TrySendError<T> {
     /// this is not a buffered channel, then there is no receiver available to
     /// acquire the data.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Full(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] T),
+    Full(#[stable(feature = "rust1", since = "1.0.0")] T),
 
     /// This channel's receiving half has disconnected, so the data could not be
     /// sent. The data is returned back to the callee in this case.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Disconnected(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] T),
+    Disconnected(#[stable(feature = "rust1", since = "1.0.0")] T),
 }
 
 enum Flavor<T> {
diff --git a/src/libstd/sys/common/poison.rs b/src/libstd/sys/common/poison.rs
index d858c0027558ced777dcfddd0fbe84e9ff5a7801..83780a31cceb121437729e00d5d0917b50794013 100644
--- a/src/libstd/sys/common/poison.rs
+++ b/src/libstd/sys/common/poison.rs
@@ -71,7 +71,7 @@ pub enum TryLockError<T> {
     /// The lock could not be acquired because another thread failed while holding
     /// the lock.
     #[stable(feature = "rust1", since = "1.0.0")]
-    Poisoned(#[cfg_attr(not(stage0), stable(feature = "rust1", since = "1.0.0"))] PoisonError<T>),
+    Poisoned(#[stable(feature = "rust1", since = "1.0.0")] PoisonError<T>),
     /// The lock could not be acquired at this time because the operation would
     /// otherwise block.
     #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/src/libstd/sys/common/unwind/gcc.rs b/src/libstd/sys/common/unwind/gcc.rs
index 7cf9e2a54bd900ff7d575dd0ecded2fe9cffc3f7..ff6a11951dc5e57f59615394758c2cdedd8fe5bc 100644
--- a/src/libstd/sys/common/unwind/gcc.rs
+++ b/src/libstd/sys/common/unwind/gcc.rs
@@ -41,7 +41,6 @@ pub unsafe fn panic(data: Box<Any + Send + 'static>) -> ! {
     }
 }
 
-#[cfg(not(stage0))]
 pub fn payload() -> *mut u8 {
     0 as *mut u8
 }
diff --git a/src/libstd/sys/common/unwind/mod.rs b/src/libstd/sys/common/unwind/mod.rs
index d9641e63760e5c102c4ec68a3735ebae33cbd3e9..527c2e63030d59bc9ddf0a82bba19112e6da53a9 100644
--- a/src/libstd/sys/common/unwind/mod.rs
+++ b/src/libstd/sys/common/unwind/mod.rs
@@ -128,7 +128,6 @@ fn try_fn<F: FnOnce()>(opt_closure: *mut u8) {
     }
 }
 
-#[cfg(not(stage0))]
 unsafe fn inner_try(f: fn(*mut u8), data: *mut u8)
                     -> Result<(), Box<Any + Send>> {
     PANIC_COUNT.with(|s| {
@@ -156,22 +155,6 @@ unsafe fn inner_try(f: fn(*mut u8), data: *mut u8)
     })
 }
 
-#[cfg(stage0)]
-unsafe fn inner_try(f: fn(*mut u8), data: *mut u8)
-                    -> Result<(), Box<Any + Send>> {
-    PANIC_COUNT.with(|s| {
-        let prev = s.get();
-        s.set(0);
-        let ep = intrinsics::try(f, data);
-        s.set(prev);
-        if ep.is_null() {
-            Ok(())
-        } else {
-            Err(imp::cleanup(ep))
-        }
-    })
-}
-
 /// Determines whether the current thread is unwinding because of panic.
 pub fn panicking() -> bool {
     PANIC_COUNT.with(|s| s.get() != 0)
diff --git a/src/libstd/sys/common/unwind/seh.rs b/src/libstd/sys/common/unwind/seh.rs
index f8d3a92b3b65ba48c8f887d5083f2a5c77f9829d..94da42f0092f5092a984f71b5b24368c1df83330 100644
--- a/src/libstd/sys/common/unwind/seh.rs
+++ b/src/libstd/sys/common/unwind/seh.rs
@@ -65,35 +65,6 @@
 
 pub use self::imp::*;
 
-#[cfg(stage0)]
-mod imp {
-    use prelude::v1::*;
-    use any::Any;
-
-    pub unsafe fn panic(_data: Box<Any + Send + 'static>) -> ! {
-        rtabort!("cannot unwind SEH in stage0")
-    }
-
-    pub unsafe fn cleanup(_ptr: *mut u8) -> Box<Any + Send + 'static> {
-        rtabort!("can't cleanup SEH in stage0")
-    }
-
-    #[lang = "msvc_try_filter"]
-    #[linkage = "external"]
-    unsafe extern fn __rust_try_filter() -> i32 {
-        0
-    }
-
-    #[lang = "eh_unwind_resume"]
-    #[unwind]
-    unsafe extern fn rust_eh_unwind_resume(_ptr: *mut u8) -> ! {
-        rtabort!("can't resume unwind SEH in stage0")
-    }
-    #[lang = "eh_personality_catch"]
-    unsafe extern fn rust_eh_personality_catch() {}
-}
-
-#[cfg(not(stage0))]
 mod imp {
     use prelude::v1::*;
 
diff --git a/src/libstd/sys/common/unwind/seh64_gnu.rs b/src/libstd/sys/common/unwind/seh64_gnu.rs
index 8afef081673d000fa9275f3ef6da803a0bd6b804..57281d67ebb406ecd6ca27382de2db8bd3d71f7e 100644
--- a/src/libstd/sys/common/unwind/seh64_gnu.rs
+++ b/src/libstd/sys/common/unwind/seh64_gnu.rs
@@ -50,7 +50,6 @@ pub unsafe fn panic(data: Box<Any + Send + 'static>) -> ! {
     rtabort!("could not unwind stack");
 }
 
-#[cfg(not(stage0))]
 pub fn payload() -> *mut u8 {
     0 as *mut u8
 }
diff --git a/src/snapshots.txt b/src/snapshots.txt
index f64c9d36025a3f847d6bcb97285567e13c8c8576..9b3390d7747285eec0784bf04860f863efb4bce3 100644
--- a/src/snapshots.txt
+++ b/src/snapshots.txt
@@ -1,3 +1,12 @@
+S 2016-02-17 4d3eebf
+  linux-i386 5f194aa7628c0703f0fd48adc4ec7f3cc64b98c7
+  linux-x86_64 d29b7607d13d64078b6324aec82926fb493f59ba
+  macos-i386 4c8e42dd649e247f3576bf9dfa273327b4907f9c
+  macos-x86_64 411a41363f922d1d93fa62ff2fedf5c35e9cccb2
+  winnt-i386 0c336d794a65f8e285c121866c7d59aa2dd0d1e1
+  winnt-x86_64 27e75b1bf99770b3564bcebd7f3230be01135a92
+  openbsd-x86_64 ac957c6b84de2bd67f01df085d9ea515f96e22f3
+
 S 2015-12-18 3391630
   bitrig-x86_64 6476e1562df02389b55553b4c88b1f4fd121cd40
   freebsd-i386 7e624c50494402e1feb14c743d659fbd71b448f5