Auto merge of #77917 - JohnTitor:rollup-e47h2qt, r=JohnTitor

Rollup of 14 pull requests

Successful merges:

 - #77239 (Enable building Cargo for aarch64-apple-darwin)
 - #77569 (BTreeMap: type-specific variants of node_as_mut and cast_unchecked)
 - #77719 (Remove unnecessary rustc_const_stable attributes.)
 - #77722 (Remove unsafety from sys/unsupported and add deny(unsafe_op_in_unsafe_fn).)
 - #77725 (Add regression issue template)
 - #77776 ( Give an error when running `x.py test --stage 0 src/test/ui`)
 - #77786 (Mention rustdoc in `x.py setup`)
 - #77825 (`min_const_generics` diagnostics improvements)
 - #77868 (Include `llvm-dis`, `llc` and `opt` in `llvm-tools-preview` component)
 - #77884 (Use Option::unwrap_or instead of open-coding it)
 - #77886 (Replace trivial bool matches with the `matches!` macro)
 - #77892 (Replace absolute paths with relative ones)
 - #77895 (Include aarch64-apple-darwin in the dist manifests)
 - #77909 (bootstrap: set correct path for the build-manifest binary)

Failed merges:

 - #77902 (Include aarch64-pc-windows-msvc in the dist manifests)

r? `@ghost`

Author: bors

.github/ISSUE_TEMPLATE/regression.md

@@ -0,0 +1,68 @@
+---
+name: Regression
+about: Report something that unexpectedly changed between Rust versions.
+labels: C-bug regression-untriaged
+---
+<!--
+Thank you for filing a regression report! 🐛 A regression is something that changed between versions of Rust but was not supposed to.
+
+Please provide a short summary of the regression, along with any information you feel is relevant to replicate it.
+-->
+
+### Code
+
+I tried this code:
+
+```rust
+<code>
+```
+
+I expected to see this happen: *explanation*
+
+Instead, this happened: *explanation*
+
+### Version it worked on
+
+<!--
+Provide the most recent version this worked on, for example:
+
+It most recently worked on: Rust 1.47
+-->
+
+It most recently worked on: <!-- version -->
+
+### Version with regression
+
+<!--
+Provide the version you are using that has the regression.
+-->
+
+`rustc --version --verbose`:
+```
+<version>
+```
+
+<!--
+Did the compiler crash? If so, please provide a backtrace.
+-->
+
+### Backtrace
+<!--
+Include a backtrace in the code block by setting `RUST_BACKTRACE=1` in your
+environment. E.g. `RUST_BACKTRACE=1 cargo build`.
+-->
+<details><summary>Backtrace</summary>
+<p>
+
+```
+<backtrace>
+```
+
+</p>
+</details>
+
+<!--
+If you know when this regression occurred, please add a line like below, replacing `{channel}` with one of stable, beta, or nightly.
+
+@rustbot modify labels: +regression-from-stable-to-{channel} -regression-untriaged
+-->

.github/workflows/ci.yml

@@ -306,14 +306,16 @@ jobs:
           - name: dist-aarch64-apple
             env:
               SCRIPT: "./x.py dist --stage 2"
-              RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --host=aarch64-apple-darwin --target=aarch64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false --tools=rls,clippy,rustfmt,analysis,src"
+              RUST_CONFIGURE_ARGS: "--build=x86_64-apple-darwin --host=aarch64-apple-darwin --target=aarch64-apple-darwin --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false"
               RUSTC_RETRY_LINKER_ON_SEGFAULT: 1
               SELECT_XCODE: /Applications/Xcode_12_beta.app
               USE_XCODE_CLANG: 1
               MACOSX_DEPLOYMENT_TARGET: 11.0
               MACOSX_STD_DEPLOYMENT_TARGET: 11.0
               NO_LLVM_ASSERTIONS: 1
               NO_DEBUG_ASSERTIONS: 1
+              DIST_REQUIRE_ALL_TOOLS: 1
+              JEMALLOC_SYS_WITH_LG_PAGE: 14
             os: macos-latest
           - name: x86_64-msvc-1
             env:

Cargo.lock

@@ -2192,9 +2192,9 @@ checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
 [[package]]
 name = "openssl-src"
-version = "111.10.2+1.1.1g"
+version = "111.12.0+1.1.1h"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a287fdb22e32b5b60624d4a5a7a02dbe82777f730ec0dbc42a0554326fef5a70"
+checksum = "858a4132194f8570a7ee9eb8629e85b23cbc4565f2d4a162e87556e5956abf61"
 dependencies = [
  "cc",
 ]

compiler/rustc_ast_pretty/src/pp.rs

@@ -170,17 +170,11 @@ pub enum Token {
 
 impl Token {
     crate fn is_eof(&self) -> bool {
-        match *self {
-            Token::Eof => true,
-            _ => false,
-        }
+        matches!(self, Token::Eof)
     }
 
     pub fn is_hardbreak_tok(&self) -> bool {
-        match *self {
-            Token::Break(BreakToken { offset: 0, blank_space: bs }) if bs == SIZE_INFINITY => true,
-            _ => false,
-        }
+        matches!(self, Token::Break(BreakToken { offset: 0, blank_space: SIZE_INFINITY }))
     }
 }
 
@@ -491,12 +485,9 @@ impl Printer {
     }
 
     fn get_top(&mut self) -> PrintStackElem {
-        match self.print_stack.last() {
-            Some(el) => *el,
-            None => {
-                PrintStackElem { offset: 0, pbreak: PrintStackBreak::Broken(Breaks::Inconsistent) }
-            }
-        }
+        *self.print_stack.last().unwrap_or({
+            &PrintStackElem { offset: 0, pbreak: PrintStackBreak::Broken(Breaks::Inconsistent) }
+        })
     }
 
     fn print_begin(&mut self, b: BeginToken, l: isize) {

compiler/rustc_codegen_llvm/src/llvm_util.rs

@@ -122,7 +122,7 @@ unsafe fn configure_llvm(sess: &Session) {
 
     llvm::LLVMInitializePasses();
 
-    ::rustc_llvm::initialize_available_targets();
+    rustc_llvm::initialize_available_targets();
 
     llvm::LLVMRustSetLLVMOptions(llvm_args.len() as c_int, llvm_args.as_ptr());
 }

compiler/rustc_codegen_ssa/src/back/write.rs

@@ -1175,7 +1175,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
     // necessary. There's already optimizations in place to avoid sending work
     // back to the coordinator if LTO isn't requested.
     return thread::spawn(move || {
-        let max_workers = ::num_cpus::get();
+        let max_workers = num_cpus::get();
         let mut worker_id_counter = 0;
         let mut free_worker_ids = Vec::new();
         let mut get_worker_id = |free_worker_ids: &mut Vec<usize>| {

compiler/rustc_codegen_ssa/src/base.rs

@@ -695,7 +695,7 @@ pub fn codegen_crate<B: ExtraBackendMethods>(
         total_codegen_time.into_inner(),
     );
 
-    ::rustc_incremental::assert_module_sources::assert_module_sources(tcx);
+    rustc_incremental::assert_module_sources::assert_module_sources(tcx);
 
     symbol_names_test::report_symbol_names(tcx);
 
@@ -754,8 +754,8 @@ impl<B: ExtraBackendMethods> Drop for AbortCodegenOnDrop<B> {
 }
 
 fn finalize_tcx(tcx: TyCtxt<'_>) {
-    tcx.sess.time("assert_dep_graph", || ::rustc_incremental::assert_dep_graph(tcx));
-    tcx.sess.time("serialize_dep_graph", || ::rustc_incremental::save_dep_graph(tcx));
+    tcx.sess.time("assert_dep_graph", || rustc_incremental::assert_dep_graph(tcx));
+    tcx.sess.time("serialize_dep_graph", || rustc_incremental::save_dep_graph(tcx));
 
     // We assume that no queries are run past here. If there are new queries
     // after this point, they'll show up as "<unknown>" in self-profiling data.

compiler/rustc_codegen_ssa/src/traits/mod.rs

@@ -85,7 +85,7 @@ impl<'tcx, T> CodegenMethods<'tcx> for T where
 }
 
 pub trait HasCodegen<'tcx>:
-    Backend<'tcx> + ::std::ops::Deref<Target = <Self as HasCodegen<'tcx>>::CodegenCx>
+    Backend<'tcx> + std::ops::Deref<Target = <Self as HasCodegen<'tcx>>::CodegenCx>
 {
     type CodegenCx: CodegenMethods<'tcx>
         + BackendTypes<

compiler/rustc_data_structures/src/fingerprint.rs

@@ -71,8 +71,8 @@ impl Fingerprint {
     }
 }
 
-impl ::std::fmt::Display for Fingerprint {
-    fn fmt(&self, formatter: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
+impl std::fmt::Display for Fingerprint {
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(formatter, "{:x}-{:x}", self.0, self.1)
     }
 }

compiler/rustc_data_structures/src/obligation_forest/mod.rs

@@ -129,7 +129,7 @@ pub enum ProcessResult<O, E> {
 struct ObligationTreeId(usize);
 
 type ObligationTreeIdGenerator =
-    ::std::iter::Map<::std::ops::RangeFrom<usize>, fn(usize) -> ObligationTreeId>;
+    std::iter::Map<std::ops::RangeFrom<usize>, fn(usize) -> ObligationTreeId>;
 
 pub struct ObligationForest<O: ForestObligation> {
     /// The list of obligations. In between calls to `process_obligations`,