Merge from rustc

.github/ISSUE_TEMPLATE/config.yml

@@ -6,3 +6,6 @@ contact_links:
   - name: Feature Request
     url: https://internals.rust-lang.org/
     about: Please discuss language feature requests on the internals forum.
+  - name: Clippy Bug
+    url: https://github.com/rust-lang/rust-clippy/issues/new/choose
+    about: Please report Clippy bugs such as false positives in the Clippy repo.

.github/workflows/ci.yml

@@ -30,10 +30,11 @@ permissions:
 defaults:
   run:
     shell: bash
+concurrency:
+  group: "${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}"
+  cancel-in-progress: true
 jobs:
   pr:
-    permissions:
-      actions: write
     name: "PR - ${{ matrix.name }}"
     env:
       CI_JOB_NAME: "${{ matrix.name }}"
@@ -84,11 +85,6 @@ jobs:
       - name: ensure the channel matches the target branch
         run: src/ci/scripts/verify-channel.sh
         if: success() && !env.SKIP_JOB
-      - name: configure GitHub Actions to kill the build when outdated
-        uses: rust-lang/simpleinfra/github-actions/cancel-outdated-builds@master
-        with:
-          github_token: "${{ secrets.github_token }}"
-        if: "success() && !env.SKIP_JOB && github.ref != 'refs/heads/try' && github.ref != 'refs/heads/try-perf'"
       - name: collect CPU statistics
         run: src/ci/scripts/collect-cpu-stats.sh
         if: success() && !env.SKIP_JOB
@@ -162,8 +158,6 @@ jobs:
           AWS_SECRET_ACCESS_KEY: "${{ secrets[format('AWS_SECRET_ACCESS_KEY_{0}', env.ARTIFACTS_AWS_ACCESS_KEY_ID)] }}"
         if: "success() && !env.SKIP_JOB && (github.event_name == 'push' || env.DEPLOY == '1' || env.DEPLOY_ALT == '1')"
   auto:
-    permissions:
-      actions: write
     name: "auto - ${{ matrix.name }}"
     env:
       CI_JOB_NAME: "${{ matrix.name }}"
@@ -496,11 +490,6 @@ jobs:
       - name: ensure the channel matches the target branch
         run: src/ci/scripts/verify-channel.sh
         if: success() && !env.SKIP_JOB
-      - name: configure GitHub Actions to kill the build when outdated
-        uses: rust-lang/simpleinfra/github-actions/cancel-outdated-builds@master
-        with:
-          github_token: "${{ secrets.github_token }}"
-        if: "success() && !env.SKIP_JOB && github.ref != 'refs/heads/try' && github.ref != 'refs/heads/try-perf'"
       - name: collect CPU statistics
         run: src/ci/scripts/collect-cpu-stats.sh
         if: success() && !env.SKIP_JOB
@@ -574,8 +563,6 @@ jobs:
           AWS_SECRET_ACCESS_KEY: "${{ secrets[format('AWS_SECRET_ACCESS_KEY_{0}', env.ARTIFACTS_AWS_ACCESS_KEY_ID)] }}"
         if: "success() && !env.SKIP_JOB && (github.event_name == 'push' || env.DEPLOY == '1' || env.DEPLOY_ALT == '1')"
   try:
-    permissions:
-      actions: write
     name: "try - ${{ matrix.name }}"
     env:
       DIST_TRY_BUILD: 1
@@ -623,11 +610,6 @@ jobs:
       - name: ensure the channel matches the target branch
         run: src/ci/scripts/verify-channel.sh
         if: success() && !env.SKIP_JOB
-      - name: configure GitHub Actions to kill the build when outdated
-        uses: rust-lang/simpleinfra/github-actions/cancel-outdated-builds@master
-        with:
-          github_token: "${{ secrets.github_token }}"
-        if: "success() && !env.SKIP_JOB && github.ref != 'refs/heads/try' && github.ref != 'refs/heads/try-perf'"
       - name: collect CPU statistics
         run: src/ci/scripts/collect-cpu-stats.sh
         if: success() && !env.SKIP_JOB

.github/workflows/dependencies.yml

@@ -25,6 +25,7 @@ env:
 
 jobs:
   not-waiting-on-bors:
+    if: github.repository_owner == 'rust-lang'
     name: skip if S-waiting-on-bors
     runs-on: ubuntu-latest
     steps:
@@ -43,6 +44,7 @@ jobs:
           fi
 
   update:
+    if: github.repository_owner == 'rust-lang'
     name: update dependencies
     needs: not-waiting-on-bors
     runs-on: ubuntu-latest
@@ -76,6 +78,7 @@ jobs:
           retention-days: 1
 
   pr:
+    if: github.repository_owner == 'rust-lang'
     name: amend PR
     needs: update
     runs-on: ubuntu-latest

Cargo.lock

@@ -480,31 +480,14 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "clap"
-version = "3.2.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23b71c3ce99b7611011217b366d923f1d0a7e07a92bb2dbf1e84508c673ca3bd"
-dependencies = [
- "atty",
- "bitflags",
- "clap_derive 3.2.18",
- "clap_lex 0.2.2",
- "indexmap",
- "once_cell",
- "strsim",
- "termcolor",
- "textwrap",
-]
-
 [[package]]
 name = "clap"
 version = "4.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "046ae530c528f252094e4a77886ee1374437744b2bff1497aa898bbddbbb29b3"
 dependencies = [
  "clap_builder",
- "clap_derive 4.2.0",
+ "clap_derive",
  "once_cell",
 ]
 
@@ -517,7 +500,7 @@ dependencies = [
  "anstream",
  "anstyle",
  "bitflags",
- "clap_lex 0.4.1",
+ "clap_lex",
  "once_cell",
  "strsim",
  "terminal_size",
@@ -529,20 +512,7 @@ version = "4.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b"
 dependencies = [
- "clap 4.2.1",
-]
-
-[[package]]
-name = "clap_derive"
-version = "3.2.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea0c8bce528c4be4da13ea6fead8965e95b6073585a2f05204bd8f4119f82a65"
-dependencies = [
- "heck",
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn 1.0.102",
+ "clap",
 ]
 
 [[package]]
@@ -557,15 +527,6 @@ dependencies = [
  "syn 2.0.8",
 ]
 
-[[package]]
-name = "clap_lex"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5538cd660450ebeb4234cfecf8f2284b844ffc4c50531e66d584ad5b91293613"
-dependencies = [
- "os_str_bytes",
-]
-
 [[package]]
 name = "clap_lex"
 version = "0.4.1"
@@ -576,7 +537,7 @@ checksum = "8a2dd5a6fe8c6e3502f568a6353e5273bbb15193ad9a89e457b9970798efbea1"
 name = "clippy"
 version = "0.1.72"
 dependencies = [
- "clap 4.2.1",
+ "clap",
  "clippy_lints",
  "clippy_utils",
  "compiletest_rs",
@@ -605,7 +566,7 @@ name = "clippy_dev"
 version = "0.0.1"
 dependencies = [
  "aho-corasick",
- "clap 4.2.1",
+ "clap",
  "indoc",
  "itertools",
  "opener",
@@ -1749,7 +1710,7 @@ name = "installer"
 version = "0.0.0"
 dependencies = [
  "anyhow",
- "clap 3.2.20",
+ "clap",
  "flate2",
  "num_cpus",
  "rayon",
@@ -1869,7 +1830,7 @@ name = "jsondoclint"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "clap 4.2.1",
+ "clap",
  "fs-err",
  "rustc-hash",
  "rustdoc-json-types",
@@ -2086,7 +2047,7 @@ dependencies = [
  "ammonia",
  "anyhow",
  "chrono",
- "clap 4.2.1",
+ "clap",
  "clap_complete",
  "elasticlunr-rs",
  "env_logger 0.10.0",
@@ -2370,12 +2331,6 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "os_str_bytes"
-version = "6.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
-
 [[package]]
 name = "owo-colors"
 version = "3.5.0"
@@ -2617,30 +2572,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 
-[[package]]
-name = "proc-macro-error"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
-dependencies = [
- "proc-macro-error-attr",
- "proc-macro2",
- "quote",
- "syn 1.0.102",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
-]
-
 [[package]]
 name = "proc-macro-hack"
 version = "0.5.19"
@@ -2897,7 +2828,7 @@ dependencies = [
 name = "rustbook"
 version = "0.1.0"
 dependencies = [
- "clap 4.2.1",
+ "clap",
  "env_logger 0.10.0",
  "mdbook",
 ]
@@ -4346,7 +4277,7 @@ dependencies = [
  "anyhow",
  "bytecount",
  "cargo_metadata",
- "clap 4.2.1",
+ "clap",
  "diff",
  "dirs",
  "env_logger 0.10.0",
@@ -4874,12 +4805,6 @@ dependencies = [
  "term",
 ]
 
-[[package]]
-name = "textwrap"
-version = "0.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
-
 [[package]]
 name = "thin-vec"
 version = "0.2.12"

README.md

@@ -33,24 +33,13 @@ format:
 ```
 
 This is how the documentation and examples assume you are running `x.py`.
-Some alternative ways are:
-
-```sh
-# On a Unix shell if you don't have the necessary `python3` command
-./x <subcommand> [flags]
-
-# On the Windows Command Prompt (if .py files are configured to run Python)
-x.py <subcommand> [flags]
-
-# You can also run Python yourself, e.g.:
-python x.py <subcommand> [flags]
-```
+See the [rustc dev guide][rustcguidebuild] if this does not work on your platform.
 
 More information about `x.py` can be found by running it with the `--help` flag
 or reading the [rustc dev guide][rustcguidebuild].
 
 [gettingstarted]: https://rustc-dev-guide.rust-lang.org/getting-started.html
-[rustcguidebuild]: https://rustc-dev-guide.rust-lang.org/building/how-to-build-and-run.html
+[rustcguidebuild]: https://rustc-dev-guide.rust-lang.org/building/how-to-build-and-run.html#what-is-xpy
 
 ### Dependencies
 

compiler/rustc_ast_lowering/src/expr.rs

@@ -277,9 +277,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
                 ExprKind::Yeet(sub_expr) => self.lower_expr_yeet(e.span, sub_expr.as_deref()),
                 ExprKind::Become(sub_expr) => {
                     let sub_expr = self.lower_expr(sub_expr);
-
-                    // FIXME(explicit_tail_calls): Use `hir::ExprKind::Become` once we implemented it
-                    hir::ExprKind::Ret(Some(sub_expr))
+                    hir::ExprKind::Become(sub_expr)
                 }
                 ExprKind::InlineAsm(asm) => {
                     hir::ExprKind::InlineAsm(self.lower_inline_asm(e.span, asm))

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -623,13 +623,12 @@ impl<'a> AstValidator<'a> {
     fn maybe_lint_missing_abi(&mut self, span: Span, id: NodeId) {
         // FIXME(davidtwco): This is a hack to detect macros which produce spans of the
         // call site which do not have a macro backtrace. See #61963.
-        let is_macro_callsite = self
+        if self
             .session
             .source_map()
             .span_to_snippet(span)
-            .map(|snippet| snippet.starts_with("#["))
-            .unwrap_or(true);
-        if !is_macro_callsite {
+            .is_ok_and(|snippet| !snippet.starts_with("#["))
+        {
             self.lint_buffer.buffer_lint_with_diagnostic(
                 MISSING_ABI,
                 id,

compiler/rustc_ast_passes/src/errors.rs

@@ -77,13 +77,6 @@ pub struct ForbiddenLifetimeBound {
     pub spans: Vec<Span>,
 }
 
-#[derive(Diagnostic)]
-#[diag(ast_passes_forbidden_non_lifetime_param)]
-pub struct ForbiddenNonLifetimeParam {
-    #[primary_span]
-    pub spans: Vec<Span>,
-}
-
 #[derive(Diagnostic)]
 #[diag(ast_passes_fn_param_too_many)]
 pub struct FnParamTooMany {

compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs

@@ -678,8 +678,8 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
         let tcx = self.infcx.tcx;
 
         // Find out if the predicates show that the type is a Fn or FnMut
-        let find_fn_kind_from_did = |(pred, _): (ty::Predicate<'tcx>, _)| {
-            if let ty::PredicateKind::Clause(ty::ClauseKind::Trait(pred)) = pred.kind().skip_binder()
+        let find_fn_kind_from_did = |(pred, _): (ty::Clause<'tcx>, _)| {
+            if let ty::ClauseKind::Trait(pred) = pred.kind().skip_binder()
                 && pred.self_ty() == ty
             {
                 if Some(pred.def_id()) == tcx.lang_items().fn_trait() {
@@ -705,7 +705,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
             ty::Alias(ty::Opaque, ty::AliasTy { def_id, substs, .. }) => tcx
                 .explicit_item_bounds(def_id)
                 .subst_iter_copied(tcx, substs)
-                .find_map(|(clause, span)| find_fn_kind_from_did((clause.as_predicate(), span))),
+                .find_map(|(clause, span)| find_fn_kind_from_did((clause, span))),
             ty::Closure(_, substs) => match substs.as_closure().kind() {
                 ty::ClosureKind::Fn => Some(hir::Mutability::Not),
                 ty::ClosureKind::FnMut => Some(hir::Mutability::Mut),