rust-lang · Centril · Jul 17, 2019 · Aug 8, 2019 · Aug 8, 2019 · Aug 8, 2019
diff --git a/RELEASES.md b/RELEASES.md
@@ -22,7 +22,7 @@ Language
 - [You can now use `_` as an identifier for consts.][61347] e.g. You can write
   `const _: u32 = 5;`.
 - [You can now use `#[repr(align(X)]` on enums.][61229]
-- [The  `?`/_"Kleene"_ macro operator is now available in the
+- [The  `?` Kleene macro operator is now available in the
   2015 edition.][60932]
 
 Compiler

diff --git a/src/bootstrap/bin/rustc.rs b/src/bootstrap/bin/rustc.rs
@@ -45,18 +45,6 @@ fn main() {
         }
     }
 
-    // Drop `--error-format json` because despite our desire for json messages
-    // from Cargo we don't want any from rustc itself.
-    if let Some(n) = args.iter().position(|n| n == "--error-format") {
-        args.remove(n);
-        args.remove(n);
-    }
-
-    if let Some(s) = env::var_os("RUSTC_ERROR_FORMAT") {
-        args.push("--error-format".into());
-        args.push(s);
-    }
-
     // Detect whether or not we're a build script depending on whether --target
     // is passed (a bit janky...)
     let target = args.windows(2)
@@ -110,7 +98,11 @@ fn main() {
 
     // Non-zero stages must all be treated uniformly to avoid problems when attempting to uplift
     // compiler libraries and such from stage 1 to 2.
-    if stage == "0" {
+    //
+    // FIXME: the fact that core here is excluded is due to core_arch from our stdarch submodule
+    // being broken on the beta compiler with bootstrap passed, so this is a temporary workaround
+    // (we've just snapped, so there are no cfg(bootstrap) related annotations in core).
+    if stage == "0" && crate_name != Some("core") {
         cmd.arg("--cfg").arg("bootstrap");
     }
 
@@ -132,10 +124,7 @@ fn main() {
         cmd.arg("-Dwarnings");
         cmd.arg("-Drust_2018_idioms");
         cmd.arg("-Dunused_lifetimes");
-        // cfg(not(bootstrap)): Remove this during the next stage 0 compiler update.
-        // `-Drustc::internal` is a new feature and `rustc_version` mis-reports the `stage`.
-        let cfg_not_bootstrap = stage != "0" && crate_name != Some("rustc_version");
-        if cfg_not_bootstrap && use_internal_lints(crate_name) {
+        if use_internal_lints(crate_name) {
             cmd.arg("-Zunstable-options");
             cmd.arg("-Drustc::internal");
         }

diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
@@ -145,7 +145,7 @@ impl StepDescription {
             only_hosts: S::ONLY_HOSTS,
             should_run: S::should_run,
             make_run: S::make_run,
-            name: unsafe { ::std::intrinsics::type_name::<S>() },
+            name: std::any::type_name::<S>(),
         }
     }
 
@@ -980,9 +980,6 @@ impl<'a> Builder<'a> {
         if let Some(target_linker) = self.linker(target) {
             cargo.env("RUSTC_TARGET_LINKER", target_linker);
         }
-        if let Some(ref error_format) = self.config.rustc_error_format {
-            cargo.env("RUSTC_ERROR_FORMAT", error_format);
-        }
         if !(["build", "check", "clippy", "fix", "rustc"].contains(&cmd)) && want_rustdoc {
             cargo.env("RUSTDOC_LIBDIR", self.rustc_libdir(compiler));
         }

diff --git a/src/bootstrap/channel.rs b/src/bootstrap/channel.rs
@@ -13,7 +13,7 @@ use build_helper::output;
 use crate::Build;
 
 // The version number
-pub const CFG_RELEASE_NUM: &str = "1.38.0";
+pub const CFG_RELEASE_NUM: &str = "1.39.0";
 
 pub struct GitInfo {
     inner: Option<Info>,

diff --git a/src/bootstrap/compile.rs b/src/bootstrap/compile.rs
@@ -1116,10 +1116,6 @@ pub fn run_cargo(builder: &Builder<'_>,
                 },
                 ..
             } => (filenames, crate_types),
-            CargoMessage::CompilerMessage { message } => {
-                eprintln!("{}", message.rendered);
-                return;
-            }
             _ => return,
         };
         for filename in filenames {
@@ -1256,8 +1252,12 @@ pub fn stream_cargo(
     }
     // Instruct Cargo to give us json messages on stdout, critically leaving
     // stderr as piped so we can get those pretty colors.
-    cargo.arg("--message-format").arg("json")
-         .stdout(Stdio::piped());
+    let mut message_format = String::from("json-render-diagnostics");
+    if let Some(s) = &builder.config.rustc_error_format  {
+        message_format.push_str(",json-diagnostic-");
+        message_format.push_str(s);
+    }
+    cargo.arg("--message-format").arg(message_format).stdout(Stdio::piped());
 
     for arg in tail_args {
         cargo.arg(arg);
@@ -1310,12 +1310,4 @@ pub enum CargoMessage<'a> {
     BuildScriptExecuted {
         package_id: Cow<'a, str>,
     },
-    CompilerMessage {
-        message: ClippyMessage<'a>
-    }
-}
-
-#[derive(Deserialize)]
-pub struct ClippyMessage<'a> {
-    rendered: Cow<'a, str>,
 }
diff --git a/src/ci/azure-pipelines/auto.yml b/src/ci/azure-pipelines/auto.yml
@@ -273,7 +273,7 @@ jobs:
         MSYS_BITS: 32
         RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
         SCRIPT: make ci-subset-1
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
         MINGW_DIR: mingw32
         # FIXME(#59637)
@@ -283,14 +283,14 @@ jobs:
         MSYS_BITS: 32
         RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu
         SCRIPT: make ci-subset-2
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
         MINGW_DIR: mingw32
       x86_64-mingw-1:
         MSYS_BITS: 64
         SCRIPT: make ci-subset-1
         RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
         MINGW_DIR: mingw64
         # FIXME(#59637)
@@ -300,7 +300,7 @@ jobs:
         MSYS_BITS: 64
         SCRIPT: make ci-subset-2
         RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
         MINGW_DIR: mingw64
 
@@ -327,7 +327,7 @@ jobs:
         MSYS_BITS: 32
         RUST_CONFIGURE_ARGS: --build=i686-pc-windows-gnu --enable-full-tools --enable-profiler
         SCRIPT: python x.py dist
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: i686-6.3.0-release-posix-dwarf-rt_v5-rev2.7z
         MINGW_DIR: mingw32
         DIST_REQUIRE_ALL_TOOLS: 1
@@ -336,7 +336,7 @@ jobs:
         MSYS_BITS: 64
         SCRIPT: python x.py dist
         RUST_CONFIGURE_ARGS: --build=x86_64-pc-windows-gnu --enable-full-tools --enable-profiler
-        MINGW_URL: https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+        MINGW_URL: https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
         MINGW_ARCHIVE: x86_64-6.3.0-release-posix-seh-rt_v5-rev2.7z
         MINGW_DIR: mingw64
         DIST_REQUIRE_ALL_TOOLS: 1

diff --git a/src/ci/azure-pipelines/steps/install-clang.yml b/src/ci/azure-pipelines/steps/install-clang.yml
@@ -36,7 +36,7 @@ steps:
     set -e
     mkdir -p citools
     cd citools
-    curl -f https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/LLVM-7.0.0-win64.tar.gz | tar xzf -
+    curl -f https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/LLVM-7.0.0-win64.tar.gz | tar xzf -
     echo "##vso[task.setvariable variable=RUST_CONFIGURE_ARGS]$RUST_CONFIGURE_ARGS --set llvm.clang-cl=`pwd`/clang-rust/bin/clang-cl.exe"
   condition: and(succeeded(), eq(variables['Agent.OS'], 'Windows_NT'), eq(variables['MINGW_URL'],''))
   displayName: Install clang (Windows)

diff --git a/src/ci/azure-pipelines/steps/install-sccache.yml b/src/ci/azure-pipelines/steps/install-sccache.yml
@@ -2,14 +2,14 @@ steps:
 
 - bash: |
     set -e
-    curl -fo /usr/local/bin/sccache https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2018-04-02-sccache-x86_64-apple-darwin
+    curl -fo /usr/local/bin/sccache https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2018-04-02-sccache-x86_64-apple-darwin
     chmod +x /usr/local/bin/sccache
   displayName: Install sccache (OSX)
   condition: and(succeeded(), eq(variables['Agent.OS'], 'Darwin'))
 
 - script: |
     md sccache
-    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf sccache\sccache.exe https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2018-04-26-sccache-x86_64-pc-windows-msvc"
+    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf sccache\sccache.exe https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2018-04-26-sccache-x86_64-pc-windows-msvc"
     echo ##vso[task.prependpath]%CD%\sccache
   displayName: Install sccache (Windows)
   condition: and(succeeded(), eq(variables['Agent.OS'], 'Windows_NT'))

diff --git a/src/ci/azure-pipelines/steps/install-windows-build-deps.yml b/src/ci/azure-pipelines/steps/install-windows-build-deps.yml
@@ -4,7 +4,7 @@ steps:
 # https://github.com/wixtoolset/wix3 originally
 - bash: |
     set -e
-    curl -O https://rust-lang-ci2.s3-us-west-1.amazonaws.com/rust-ci-mirror/wix311-binaries.zip
+    curl -O https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/wix311-binaries.zip
     echo "##vso[task.setvariable variable=WIX]`pwd`/wix"
     mkdir -p wix/bin
     cd wix/bin
@@ -18,7 +18,7 @@ steps:
 # one is MSI installers and one is EXE, but they're not used so frequently at
 # this point anyway so perhaps it's a wash!
 - script: |
-    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf is-install.exe https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2017-08-22-is.exe"
+    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf is-install.exe https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2017-08-22-is.exe"
     is-install.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-
     echo ##vso[task.prependpath]C:\Program Files (x86)\Inno Setup 5
   displayName: Install InnoSetup
@@ -109,7 +109,7 @@ steps:
 # Note that this is originally from the github releases patch of Ninja
 - script: |
     md ninja
-    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf 2017-03-15-ninja-win.zip https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2017-03-15-ninja-win.zip"
+    powershell -Command "$ProgressPreference = 'SilentlyContinue'; iwr -outf 2017-03-15-ninja-win.zip https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2017-03-15-ninja-win.zip"
     7z x -oninja 2017-03-15-ninja-win.zip
     del 2017-03-15-ninja-win.zip
     set RUST_CONFIGURE_ARGS=%RUST_CONFIGURE_ARGS% --enable-ninja

diff --git a/src/ci/docker/armhf-gnu/Dockerfile b/src/ci/docker/armhf-gnu/Dockerfile
@@ -72,7 +72,7 @@ RUN arm-linux-gnueabihf-gcc addentropy.c -o rootfs/addentropy -static
 
 # TODO: What is this?!
 # Source of the file: https://github.com/vfdev-5/qemu-rpi2-vexpress/raw/master/vexpress-v2p-ca15-tc1.dtb
-RUN curl -O https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/vexpress-v2p-ca15-tc1.dtb
+RUN curl -O https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/vexpress-v2p-ca15-tc1.dtb
 
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh

diff --git a/src/ci/docker/dist-various-1/install-mips-musl.sh b/src/ci/docker/dist-various-1/install-mips-musl.sh
@@ -5,7 +5,7 @@ mkdir /usr/local/mips-linux-musl
 # originally from
 # https://downloads.openwrt.org/snapshots/trunk/ar71xx/generic/
 # OpenWrt-Toolchain-ar71xx-generic_gcc-5.3.0_musl-1.1.16.Linux-x86_64.tar.bz2
-URL="https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror"
+URL="https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc"
 FILE="OpenWrt-Toolchain-ar71xx-generic_gcc-5.3.0_musl-1.1.16.Linux-x86_64.tar.bz2"
 curl -L "$URL/$FILE" | tar xjf - -C /usr/local/mips-linux-musl --strip-components=2
 

diff --git a/src/ci/docker/dist-various-2/build-wasi-toolchain.sh b/src/ci/docker/dist-various-2/build-wasi-toolchain.sh
@@ -5,7 +5,7 @@
 set -ex
 
 # Originally from https://releases.llvm.org/8.0.0/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz
-curl https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/clang%2Bllvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz | \
+curl https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/clang%2Bllvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04.tar.xz | \
   tar xJf -
 export PATH=`pwd`/clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-14.04/bin:$PATH
 

diff --git a/src/ci/docker/dist-x86_64-linux/build-openssl.sh b/src/ci/docker/dist-x86_64-linux/build-openssl.sh
@@ -4,7 +4,7 @@ set -ex
 source shared.sh
 
 VERSION=1.0.2k
-URL=https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/openssl-$VERSION.tar.gz
+URL=https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/openssl-$VERSION.tar.gz
 
 curl $URL | tar xzf -
 

diff --git a/src/ci/docker/dist-x86_64-netbsd/build-netbsd-toolchain.sh b/src/ci/docker/dist-x86_64-netbsd/build-netbsd-toolchain.sh
@@ -25,7 +25,7 @@ cd netbsd
 
 mkdir -p /x-tools/x86_64-unknown-netbsd/sysroot
 
-URL=https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror
+URL=https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc
 
 # Originally from ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-$BSD/source/sets/*.tgz
 curl $URL/2018-03-01-netbsd-src.tgz | tar xzf -

diff --git a/src/ci/docker/scripts/android-sdk-manager.py b/src/ci/docker/scripts/android-sdk-manager.py
@@ -23,8 +23,9 @@
 HOST_OS = "linux"
 
 # Mirroring options
-MIRROR_BUCKET = "rust-lang-ci2"
-MIRROR_BASE_DIR = "rust-ci-mirror/android/"
+MIRROR_BUCKET = "rust-lang-ci-mirrors"
+MIRROR_BUCKET_REGION = "us-west-1"
+MIRROR_BASE_DIR = "rustc/android/"
 
 import argparse
 import hashlib
@@ -144,7 +145,8 @@ def cli_install(args):
     lockfile = Lockfile(args.lockfile)
     for package in lockfile.packages.values():
         # Download the file from the mirror into a temp file
-        url = "https://" + MIRROR_BUCKET + ".s3.amazonaws.com/" + MIRROR_BASE_DIR
+        url = "https://" + MIRROR_BUCKET + ".s3-" + MIRROR_BUCKET_REGION + \
+              ".amazonaws.com/" + MIRROR_BASE_DIR
         downloaded = package.download(url)
         # Extract the file in a temporary directory
         extract_dir = tempfile.mkdtemp()

diff --git a/src/ci/docker/scripts/freebsd-toolchain.sh b/src/ci/docker/scripts/freebsd-toolchain.sh
@@ -59,7 +59,7 @@ done
 
 # Originally downloaded from:
 # https://download.freebsd.org/ftp/releases/${freebsd_arch}/${freebsd_version}-RELEASE/base.txz
-URL=https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2019-04-04-freebsd-${freebsd_arch}-${freebsd_version}-RELEASE-base.txz
+URL=https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2019-04-04-freebsd-${freebsd_arch}-${freebsd_version}-RELEASE-base.txz
 curl "$URL" | tar xJf - -C "$sysroot" --wildcards "${files_to_extract[@]}"
 
 # Fix up absolute symlinks from the system image.  This can be removed

diff --git a/src/ci/docker/scripts/sccache.sh b/src/ci/docker/scripts/sccache.sh
@@ -1,6 +1,6 @@
 set -ex
 
 curl -fo /usr/local/bin/sccache \
-  https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2018-04-02-sccache-x86_64-unknown-linux-musl
+  https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2018-04-02-sccache-x86_64-unknown-linux-musl
 
 chmod +x /usr/local/bin/sccache
diff --git a/src/ci/install-awscli.sh b/src/ci/install-awscli.sh
@@ -16,7 +16,7 @@
 set -euo pipefail
 IFS=$'\n\t'
 
-MIRROR="https://rust-lang-ci2.s3.amazonaws.com/rust-ci-mirror/2019-07-27-awscli.tar"
+MIRROR="https://rust-lang-ci-mirrors.s3-us-west-1.amazonaws.com/rustc/2019-07-27-awscli.tar"
 DEPS_DIR="/tmp/awscli-deps"
 
 pip="pip"

diff --git a/src/liballoc/collections/binary_heap.rs b/src/liballoc/collections/binary_heap.rs
@@ -1163,6 +1163,9 @@ impl<T> FusedIterator for Drain<'_, T> {}
 
 #[stable(feature = "binary_heap_extras_15", since = "1.5.0")]
 impl<T: Ord> From<Vec<T>> for BinaryHeap<T> {
+    /// Converts a `Vec<T>` into a `BinaryHeap<T>`.
+    ///
+    /// This conversion happens in-place, and has `O(n)` time complexity.
     fn from(vec: Vec<T>) -> BinaryHeap<T> {
         let mut heap = BinaryHeap { data: vec };
         heap.rebuild();

diff --git a/src/liballoc/collections/btree/node.rs b/src/liballoc/collections/btree/node.rs
@@ -106,8 +106,8 @@ impl<K, V> LeafNode<K, V> {
         LeafNode {
             // As a general policy, we leave fields uninitialized if they can be, as this should
             // be both slightly faster and easier to track in Valgrind.
-            keys: uninit_array![_; CAPACITY],
-            vals: uninit_array![_; CAPACITY],
+            keys: [MaybeUninit::UNINIT; CAPACITY],
+            vals: [MaybeUninit::UNINIT; CAPACITY],
             parent: ptr::null(),
             parent_idx: MaybeUninit::uninit(),
             len: 0
@@ -159,7 +159,7 @@ impl<K, V> InternalNode<K, V> {
     unsafe fn new() -> Self {
         InternalNode {
             data: LeafNode::new(),
-            edges: uninit_array![_; 2*B],
+            edges: [MaybeUninit::UNINIT; 2*B]
         }
     }
 }

diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
@@ -69,7 +69,7 @@
 #![warn(missing_debug_implementations)]
 #![deny(intra_doc_link_resolution_failure)] // rustdoc is run without -D warnings
 #![allow(explicit_outlives_requirements)]
-#![cfg_attr(not(bootstrap), allow(incomplete_features))]
+#![allow(incomplete_features)]
 
 #![cfg_attr(not(test), feature(generator_trait))]
 #![cfg_attr(test, feature(test))]
@@ -84,7 +84,7 @@
 #![feature(coerce_unsized)]
 #![feature(const_generic_impls_guard)]
 #![feature(const_generics)]
-#![cfg_attr(not(bootstrap), feature(const_in_array_repeat_expressions))]
+#![feature(const_in_array_repeat_expressions)]
 #![feature(dispatch_from_dyn)]
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]
@@ -118,7 +118,7 @@
 #![feature(rustc_const_unstable)]
 #![feature(const_vec_new)]
 #![feature(slice_partition_dedup)]
-#![feature(maybe_uninit_extra, maybe_uninit_slice, maybe_uninit_array)]
+#![feature(maybe_uninit_extra, maybe_uninit_slice)]
 #![feature(alloc_layout_extra)]
 #![feature(try_trait)]
 #![feature(mem_take)]

diff --git a/src/libcore/any.rs b/src/libcore/any.rs
@@ -470,10 +470,5 @@ impl TypeId {
 #[stable(feature = "type_name", since = "1.38.0")]
 #[rustc_const_unstable(feature = "const_type_name")]
 pub const fn type_name<T: ?Sized>() -> &'static str {
-    #[cfg(bootstrap)]
-    unsafe {
-        intrinsics::type_name::<T>()
-    }
-    #[cfg(not(bootstrap))]
     intrinsics::type_name::<T>()
 }