Auto merge of rust-lang#52949 - Mark-Simulacrum:snap, r=alexcrichton

Switch to bootstrapping from 1.29 beta

r? @alexcrichton

Author: bors

Diff for: src/bootstrap/channel.rs

@@ -24,7 +24,7 @@ use Build;
 use config::Config;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.29.0";
+pub const CFG_RELEASE_NUM: &str = "1.30.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

Diff for: src/liballoc/lib.rs

@@ -162,10 +162,7 @@ mod boxed {
 #[cfg(test)]
 mod boxed_test;
 pub mod collections;
-#[cfg(any(
-    all(stage0, target_has_atomic = "ptr"),
-    all(not(stage0), target_has_atomic = "ptr", target_has_atomic = "cas")
-))]
+#[cfg(all(target_has_atomic = "ptr", target_has_atomic = "cas"))]
 pub mod sync;
 pub mod rc;
 pub mod raw_vec;

Diff for: src/liballoc/task.rs

@@ -12,16 +12,10 @@
 
 pub use core::task::*;
 
-#[cfg(any(
-    all(stage0, target_has_atomic = "ptr"),
-    all(not(stage0), target_has_atomic = "ptr", target_has_atomic = "cas")
-))]
+#[cfg(all(target_has_atomic = "ptr", target_has_atomic = "cas"))]
 pub use self::if_arc::*;
 
-#[cfg(any(
-    all(stage0, target_has_atomic = "ptr"),
-    all(not(stage0), target_has_atomic = "ptr", target_has_atomic = "cas")
-))]
+#[cfg(all(target_has_atomic = "ptr", target_has_atomic = "cas"))]
 mod if_arc {
     use super::*;
     use core::marker::PhantomData;
@@ -53,10 +47,7 @@ mod if_arc {
         }
     }
 
-    #[cfg(any(
-        all(stage0, target_has_atomic = "ptr"),
-        all(not(stage0), target_has_atomic = "ptr", target_has_atomic = "cas")
-    ))]
+    #[cfg(all(target_has_atomic = "ptr", target_has_atomic = "cas"))]
     struct ArcWrapped<T>(PhantomData<T>);
 
     unsafe impl<T: Wake + 'static> UnsafeWake for ArcWrapped<T> {

Diff for: src/libcore/alloc.rs

@@ -19,10 +19,6 @@ use usize;
 use ptr::{self, NonNull};
 use num::NonZeroUsize;
 
-#[unstable(feature = "alloc_internals", issue = "0")]
-#[cfg(stage0)]
-pub type Opaque = u8;
-
 /// Represents the combination of a starting address and
 /// a total capacity of the returned block.
 #[unstable(feature = "allocator_api", issue = "32838")]
@@ -48,7 +44,7 @@ fn size_align<T>() -> (usize, usize) {
 /// use specific allocators with looser requirements.)
 #[stable(feature = "alloc_layout", since = "1.28.0")]
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
-#[cfg_attr(not(stage0), lang = "alloc_layout")]
+#[lang = "alloc_layout"]
 pub struct Layout {
     // size of the requested block of memory, measured in bytes.
     size_: usize,

Diff for: src/libcore/intrinsics.rs

@@ -1087,11 +1087,9 @@ extern "rust-intrinsic" {
 
     /// Perform a volatile load from the `src` pointer
     /// The pointer is not required to be aligned.
-    #[cfg(not(stage0))]
     pub fn unaligned_volatile_load<T>(src: *const T) -> T;
     /// Perform a volatile store to the `dst` pointer.
     /// The pointer is not required to be aligned.
-    #[cfg(not(stage0))]
     pub fn unaligned_volatile_store<T>(dst: *mut T, val: T);
 
     /// Returns the square root of an `f32`

Diff for: src/libcore/manually_drop_stage0.rs

@@ -953,18 +953,13 @@ pub fn discriminant<T>(v: &T) -> Discriminant<T> {
 ///     }
 /// }
 /// ```
-#[cfg(not(stage0))]
 #[stable(feature = "manually_drop", since = "1.20.0")]
 #[lang = "manually_drop"]
 #[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct ManuallyDrop<T> {
     value: T,
 }
 
-#[cfg(stage0)]
-include!("manually_drop_stage0.rs");
-
-#[cfg(not(stage0))]
 impl<T> ManuallyDrop<T> {
     /// Wrap a value to be manually dropped.
     ///
@@ -1010,7 +1005,6 @@ impl<T> ManuallyDrop<T> {
     }
 }
 
-#[cfg(not(stage0))]
 #[stable(feature = "manually_drop", since = "1.20.0")]
 impl<T> Deref for ManuallyDrop<T> {
     type Target = T;
@@ -1020,7 +1014,6 @@ impl<T> Deref for ManuallyDrop<T> {
     }
 }
 
-#[cfg(not(stage0))]
 #[stable(feature = "manually_drop", since = "1.20.0")]
 impl<T> DerefMut for ManuallyDrop<T> {
     #[inline]