[beta-1.79] fix(toml): Don't warn on lints.rust.unexpected_cfgs.check-cfg

.github/workflows/main.yml

@@ -256,11 +256,11 @@ jobs:
         curl -Lf https://github.com/rust-lang/mdBook/releases/download/v0.4.37/mdbook-v0.4.37-x86_64-unknown-linux-gnu.tar.gz | tar -xz --directory=./mdbook
         echo `pwd`/mdbook >> $GITHUB_PATH
     - run: cd src/doc && mdbook build --dest-dir ../../target/doc
-    - name: Run linkchecker.sh
-      run: |
-        cd target
-        curl -sSLO https://raw.githubusercontent.com/rust-lang/rust/master/src/tools/linkchecker/linkcheck.sh
-        sh linkcheck.sh --all --path ../src/doc cargo
+#    - name: Run linkchecker.sh
+#      run: |
+#        cd target
+#        curl -sSLO https://raw.githubusercontent.com/rust-lang/rust/master/src/tools/linkchecker/linkcheck.sh
+#        sh linkcheck.sh --all --path ../src/doc cargo
 
   msrv:
     runs-on: ubuntu-latest

Cargo.toml

@@ -95,7 +95,7 @@ snapbox = { version = "0.5.9", features = ["diff", "path", "term-svg"] }
 tar = { version = "0.4.40", default-features = false }
 tempfile = "3.10.1"
 thiserror = "1.0.58"
-time = { version = "0.3", features = ["parsing", "formatting", "serde"] }
+time = { version = "0.3.36", features = ["parsing", "formatting", "serde"] }
 toml = "0.8.12"
 toml_edit = { version = "0.22.11", features = ["serde"] }
 tracing = "0.1.40" # be compatible with rustc_log: https://github.com/rust-lang/rust/blob/e51e98dde6a/compiler/rustc_log/Cargo.toml#L9

crates/cargo-test-support/build.rs

@@ -1,6 +1,7 @@
 #![allow(clippy::disallowed_methods)]
 
 fn main() {
+    println!("cargo:rustc-check-cfg=cfg(emulate_second_only_system)");
     println!(
         "cargo:rustc-env=NATIVE_ARCH={}",
         std::env::var("TARGET").unwrap()

crates/cargo-test-support/containers/apache/Dockerfile

@@ -6,13 +6,13 @@ COPY bar /repos/bar
 WORKDIR /repos/bar
 RUN git config --global user.email "testuser@example.com" &&\
     git config --global user.name "Test User" &&\
+    git config --system --add safe.directory '*' &&\
     git init -b master . &&\
     git add Cargo.toml src &&\
     git commit -m "Initial commit" &&\
-    mv .git ../bar.git &&\
-    cd ../bar.git &&\
-    git config --bool core.bare true &&\
-    rm -rf ../bar
+    cd .. &&\
+    git clone --bare bar bar.git &&\
+    rm -rf bar
 WORKDIR /
 
 EXPOSE 443

crates/cargo-test-support/containers/sshd/Dockerfile

@@ -17,10 +17,9 @@ RUN git config --global user.email "testuser@example.com" &&\
     git init -b master . &&\
     git add Cargo.toml src &&\
     git commit -m "Initial commit" &&\
-    mv .git ../bar.git &&\
-    cd ../bar.git &&\
-    git config --bool core.bare true &&\
-    rm -rf ../bar
+    cd .. &&\
+    git clone --bare bar bar.git &&\
+    rm -rf bar
 WORKDIR /
 USER root
 

crates/rustfix/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rustfix"
-version = "0.8.3"
+version = "0.8.4"
 authors = [
     "Pascal Hertleif <killercup@gmail.com>",
     "Oliver Schneider <oli-obk@users.noreply.github.com>",

crates/rustfix/tests/everything/multiple-solutions.fixed.rs → crates/rustfix/tests/everything/multiple-solutions.nightly.fixed.rs

@@ -1,4 +1,4 @@
-use std::collections::{HashSet};
+use std::collections::HashSet;
 
 fn main() {
     let _: HashSet<()>;

crates/rustfix/tests/everything/multiple-solutions.json → crates/rustfix/tests/everything/multiple-solutions.nightly.json

@@ -1,4 +1,5 @@
 {
+  "$message_type": "diagnostic",
   "message": "unused imports: `HashMap`, `VecDeque`",
   "code": {
     "code": "unused_imports",
@@ -7,7 +8,7 @@
   "level": "warning",
   "spans": [
     {
-      "file_name": "src/main.rs",
+      "file_name": "./tests/everything/multiple-solutions.nightly.rs",
       "byte_start": 23,
       "byte_end": 30,
       "line_start": 1,
@@ -28,7 +29,7 @@
       "expansion": null
     },
     {
-      "file_name": "src/main.rs",
+      "file_name": "./tests/everything/multiple-solutions.nightly.rs",
       "byte_start": 41,
       "byte_end": 49,
       "line_start": 1,
@@ -51,7 +52,7 @@
   ],
   "children": [
     {
-      "message": "#[warn(unused_imports)] on by default",
+      "message": "`#[warn(unused_imports)]` on by default",
       "code": null,
       "level": "note",
       "spans": [],
@@ -64,7 +65,28 @@
       "level": "help",
       "spans": [
         {
-          "file_name": "src/main.rs",
+          "file_name": "./tests/everything/multiple-solutions.nightly.rs",
+          "byte_start": 22,
+          "byte_end": 23,
+          "line_start": 1,
+          "line_end": 1,
+          "column_start": 23,
+          "column_end": 24,
+          "is_primary": true,
+          "text": [
+            {
+              "text": "use std::collections::{HashMap, HashSet, VecDeque};",
+              "highlight_start": 23,
+              "highlight_end": 24
+            }
+          ],
+          "label": null,
+          "suggested_replacement": "",
+          "suggestion_applicability": "MachineApplicable",
+          "expansion": null
+        },
+        {
+          "file_name": "./tests/everything/multiple-solutions.nightly.rs",
           "byte_start": 23,
           "byte_end": 32,
           "line_start": 1,
@@ -85,7 +107,7 @@
           "expansion": null
         },
         {
-          "file_name": "src/main.rs",
+          "file_name": "./tests/everything/multiple-solutions.nightly.rs",
           "byte_start": 39,
           "byte_end": 49,
           "line_start": 1,
@@ -104,11 +126,41 @@
           "suggested_replacement": "",
           "suggestion_applicability": "MachineApplicable",
           "expansion": null
+        },
+        {
+          "file_name": "./tests/everything/multiple-solutions.nightly.rs",
+          "byte_start": 49,
+          "byte_end": 50,
+          "line_start": 1,
+          "line_end": 1,
+          "column_start": 50,
+          "column_end": 51,
+          "is_primary": true,
+          "text": [
+            {
+              "text": "use std::collections::{HashMap, HashSet, VecDeque};",
+              "highlight_start": 50,
+              "highlight_end": 51
+            }
+          ],
+          "label": null,
+          "suggested_replacement": "",
+          "suggestion_applicability": "MachineApplicable",
+          "expansion": null
         }
       ],
       "children": [],
       "rendered": null
     }
   ],
-  "rendered": "warning: unused imports: `HashMap`, `VecDeque`\n --> src/main.rs:1:24\n  |\n1 | use std::collections::{HashMap, HashSet, VecDeque};\n  |                        ^^^^^^^           ^^^^^^^^\n  |\n  = note: #[warn(unused_imports)] on by default\nhelp: remove the unused imports\n  |\n1 | use std::collections::{HashSet};\n  |                       --     --\n\n"
+  "rendered": "warning: unused imports: `HashMap`, `VecDeque`\n --> ./tests/everything/multiple-solutions.nightly.rs:1:24\n  |\n1 | use std::collections::{HashMap, HashSet, VecDeque};\n  |                        ^^^^^^^           ^^^^^^^^\n  |\n  = note: `#[warn(unused_imports)]` on by default\n\n"
+}
+{
+  "$message_type": "diagnostic",
+  "message": "1 warning emitted",
+  "code": null,
+  "level": "warning",
+  "spans": [],
+  "children": [],
+  "rendered": "warning: 1 warning emitted\n\n"
 }

crates/rustfix/tests/parse_and_replace.rs

@@ -45,6 +45,26 @@ mod settings {
     pub const BLESS: &str = "RUSTFIX_TEST_BLESS";
 }
 
+static mut VERSION: (u32, bool) = (0, false);
+
+// Temporarily copy from `cargo_test_macro::version`.
+fn version() -> (u32, bool) {
+    static INIT: std::sync::Once = std::sync::Once::new();
+    INIT.call_once(|| {
+        let output = Command::new("rustc")
+            .arg("-V")
+            .output()
+            .expect("cargo should run");
+        let stdout = std::str::from_utf8(&output.stdout).expect("utf8");
+        let vers = stdout.split_whitespace().skip(1).next().unwrap();
+        let is_nightly = option_env!("CARGO_TEST_DISABLE_NIGHTLY").is_none()
+            && (vers.contains("-nightly") || vers.contains("-dev"));
+        let minor = vers.split('.').skip(1).next().unwrap().parse().unwrap();
+        unsafe { VERSION = (minor, is_nightly) }
+    });
+    unsafe { VERSION }
+}
+
 fn compile(file: &Path) -> Result<Output, Error> {
     let tmp = tempdir()?;
 
@@ -220,7 +240,20 @@ fn assert_fixtures(dir: &str, mode: &str) {
         .unwrap();
     let mut failures = 0;
 
+    let is_not_nightly = !version().1;
+
     for file in &files {
+        if file
+            .file_stem()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .ends_with(".nightly")
+            && is_not_nightly
+        {
+            info!("skipped: {file:?}");
+            continue;
+        }
         if let Err(err) = test_rustfix_with_file(file, mode) {
             println!("failed: {}", file.display());
             warn!("{:?}", err);

src/cargo/util/toml/mod.rs

@@ -2356,6 +2356,11 @@ fn deprecated_underscore<T>(
 
 fn warn_on_unused(unused: &BTreeSet<String>, warnings: &mut Vec<String>) {
     for key in unused {
+        if key == "lints.rust.unexpected_cfgs.check-cfg" {
+            // This key is recognized in the following version and wanting to reduce warning noise
+            // for those users
+            continue;
+        }
         warnings.push(format!("unused manifest key: {}", key));
         if key == "profiles.debug" {
             warnings.push("use `[profile.dev]` to configure debug builds".to_string());

tests/testsuite/bench.rs

@@ -267,9 +267,9 @@ fn many_similar_names() {
         .build();
 
     p.cargo("bench")
-        .with_stdout_contains("test bin_bench ... bench:           0 ns/iter (+/- 0)")
-        .with_stdout_contains("test lib_bench ... bench:           0 ns/iter (+/- 0)")
-        .with_stdout_contains("test bench_bench ... bench:           0 ns/iter (+/- 0)")
+        .with_stdout_contains("test bin_bench ... bench:[..]")
+        .with_stdout_contains("test lib_bench ... bench:[..]")
+        .with_stdout_contains("test bench_bench ... bench:[..]")
         .run();
 }
 

tests/testsuite/check_cfg.rs

@@ -574,6 +574,34 @@ fn build_script_feature_gate() {
         .run();
 }
 
+#[cargo_test]
+fn config_simple() {
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                version = "0.1.0"
+                edition = "2015"
+
+                [lints.rust]
+                unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)", "cfg(has_bar, values(\"yes\", \"no\"))"] }
+            "#,
+        )
+        .file("src/main.rs", "fn main() {}")
+        .build();
+
+    p.cargo("check")
+        .with_stderr(
+            "\
+[CHECKING] foo v0.1.0 ([CWD])
+[FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]s
+",
+        )
+        .run();
+}
+
 #[cargo_test(nightly, reason = "--check-cfg is unstable")]
 fn config_valid() {
     let p = project()

tests/testsuite/standard_lib.rs

@@ -96,8 +96,19 @@ fn setup() -> Setup {
                         args.push(env::var("REAL_SYSROOT").unwrap());
                     } else if args.iter().any(|arg| arg == "--target") {
                         // build-std target unit
-                        args.push("--sysroot".to_string());
-                        args.push("/path/to/nowhere".to_string());
+                        //
+                        // This `--sysroot` is here to disable the sysroot lookup,
+                        // to ensure nothing is required.
+                        // See https://github.com/rust-lang/wg-cargo-std-aware/issues/31
+                        // for more information on this.
+                        //
+                        // FIXME: this is broken on x86_64-unknown-linux-gnu
+                        // due to https://github.com/rust-lang/rust/pull/124129,
+                        // because it requires lld in the sysroot. See
+                        // https://github.com/rust-lang/rust/issues/125246 for
+                        // more information.
+                        // args.push("--sysroot".to_string());
+                        // args.push("/path/to/nowhere".to_string());
                     } else {
                         // host unit, do not use sysroot
                     }