Rollup merge of #92849 - flip1995:clippyup, r=Manishearth

Clippyup

r? ```@Manishearth```

Author: matthiaskrgr

Cargo.lock

@@ -639,14 +639,15 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
  "cargo_metadata 0.14.0",
  "clippy_lints",
  "clippy_utils",
  "compiletest_rs",
  "derive-new",
  "filetime",
+ "futures 0.3.12",
  "if_chain",
  "itertools 0.10.1",
  "parking_lot",
@@ -659,6 +660,7 @@ dependencies = [
  "syn",
  "tempfile",
  "tester",
+ "tokio",
 ]
 
 [[package]]
@@ -678,7 +680,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
  "cargo_metadata 0.14.0",
  "clippy_utils",
@@ -699,8 +701,9 @@ dependencies = [
 
 [[package]]
 name = "clippy_utils"
-version = "0.1.59"
+version = "0.1.60"
 dependencies = [
+ "arrayvec",
  "if_chain",
  "rustc-semver",
 ]

src/tools/clippy/.cargo/config.toml

@@ -2,9 +2,12 @@
 uitest = "test --test compile-test"
 dev = "run --package clippy_dev --bin clippy_dev --manifest-path clippy_dev/Cargo.toml --"
 lintcheck = "run --package lintcheck --bin lintcheck --manifest-path lintcheck/Cargo.toml  -- "
-collect-metadata = "test --test dogfood --features metadata-collector-lint -- run_metadata_collection_lint --ignored"
+collect-metadata = "test --test dogfood --features internal -- run_metadata_collection_lint --ignored"
 
 [build]
 # -Zbinary-dep-depinfo allows us to track which rlib files to use for compiling UI tests
 rustflags = ["-Zunstable-options", "-Zbinary-dep-depinfo"]
 target-dir = "target"
+
+[unstable]
+binary-dep-depinfo = true

src/tools/clippy/.github/workflows/clippy.yml

@@ -49,17 +49,17 @@ jobs:
         echo "LD_LIBRARY_PATH=${SYSROOT}/lib${LD_LIBRARY_PATH+:${LD_LIBRARY_PATH}}" >> $GITHUB_ENV
 
     - name: Build
-      run: cargo build --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo build --features deny-warnings,internal
 
     - name: Test
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo test --features deny-warnings,internal
 
     - name: Test clippy_lints
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo test --features deny-warnings,internal
       working-directory: clippy_lints
 
     - name: Test clippy_utils
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo test --features deny-warnings,internal
       working-directory: clippy_utils
 
     - name: Test rustc_tools_util
@@ -70,14 +70,6 @@ jobs:
       run: cargo test --features deny-warnings
       working-directory: clippy_dev
 
-    - name: Test cargo-clippy
-      run: ../target/debug/cargo-clippy
-      working-directory: clippy_workspace_tests
-
-    - name: Test cargo-clippy --fix
-      run: ../target/debug/cargo-clippy clippy --fix
-      working-directory: clippy_workspace_tests
-
     - name: Test clippy-driver
       run: bash .github/driver.sh
       env:

src/tools/clippy/.github/workflows/clippy_bors.yml

@@ -112,17 +112,22 @@ jobs:
         echo "$SYSROOT/bin" >> $GITHUB_PATH
 
     - name: Build
-      run: cargo build --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo build --features deny-warnings,internal
 
     - name: Test
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      if: runner.os == 'Linux'
+      run: cargo test --features deny-warnings,internal
+
+    - name: Test
+      if: runner.os != 'Linux'
+      run: cargo test --features deny-warnings,internal -- --skip dogfood
 
     - name: Test clippy_lints
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo test --features deny-warnings,internal
       working-directory: clippy_lints
 
     - name: Test clippy_utils
-      run: cargo test --features deny-warnings,internal-lints,metadata-collector-lint
+      run: cargo test --features deny-warnings,internal
       working-directory: clippy_utils
 
     - name: Test rustc_tools_util
@@ -133,14 +138,6 @@ jobs:
       run: cargo test --features deny-warnings
       working-directory: clippy_dev
 
-    - name: Test cargo-clippy
-      run: ../target/debug/cargo-clippy
-      working-directory: clippy_workspace_tests
-
-    - name: Test cargo-clippy --fix
-      run: ../target/debug/cargo-clippy clippy --fix
-      working-directory: clippy_workspace_tests
-
     - name: Test clippy-driver
       run: bash .github/driver.sh
       env:

src/tools/clippy/.gitignore

@@ -19,7 +19,6 @@ out
 /target
 /clippy_lints/target
 /clippy_utils/target
-/clippy_workspace_tests/target
 /clippy_dev/target
 /lintcheck/target
 /rustc_tools_util/target

src/tools/clippy/CHANGELOG.md

@@ -2887,6 +2887,7 @@ Released 2018-09-13
 [`blocks_in_if_conditions`]: https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_if_conditions
 [`bool_assert_comparison`]: https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
 [`bool_comparison`]: https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
+[`borrow_as_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#borrow_as_ptr
 [`borrow_interior_mutable_const`]: https://rust-lang.github.io/rust-clippy/master/index.html#borrow_interior_mutable_const
 [`borrowed_box`]: https://rust-lang.github.io/rust-clippy/master/index.html#borrowed_box
 [`box_collection`]: https://rust-lang.github.io/rust-clippy/master/index.html#box_collection
@@ -3070,6 +3071,7 @@ Released 2018-09-13
 [`main_recursion`]: https://rust-lang.github.io/rust-clippy/master/index.html#main_recursion
 [`manual_assert`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_assert
 [`manual_async_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_async_fn
+[`manual_bits`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
 [`manual_filter_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter_map
 [`manual_find_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find_map
 [`manual_flatten`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten
@@ -3253,6 +3255,7 @@ Released 2018-09-13
 [`should_implement_trait`]: https://rust-lang.github.io/rust-clippy/master/index.html#should_implement_trait
 [`similar_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#similar_names
 [`single_char_add_str`]: https://rust-lang.github.io/rust-clippy/master/index.html#single_char_add_str
+[`single_char_lifetime_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#single_char_lifetime_names
 [`single_char_pattern`]: https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
 [`single_component_path_imports`]: https://rust-lang.github.io/rust-clippy/master/index.html#single_component_path_imports
 [`single_element_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#single_element_loop

src/tools/clippy/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.59"
+version = "0.1.60"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"
@@ -47,16 +47,17 @@ itertools = "0.10"
 quote = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 syn = { version = "1.0", features = ["full"] }
+futures = "0.3"
 parking_lot = "0.11.2"
+tokio = { version = "1", features = ["io-util"] }
 
 [build-dependencies]
 rustc_tools_util = { version = "0.2", path = "rustc_tools_util" }
 
 [features]
 deny-warnings = ["clippy_lints/deny-warnings"]
 integration = ["tempfile"]
-internal-lints = ["clippy_lints/internal-lints"]
-metadata-collector-lint = ["internal-lints", "clippy_lints/metadata-collector-lint"]
+internal = ["clippy_lints/internal"]
 
 [package.metadata.rust-analyzer]
 # This package uses #[feature(rustc_private)]

src/tools/clippy/README.md

@@ -5,7 +5,7 @@
 
 A collection of lints to catch common mistakes and improve your [Rust](https://github.com/rust-lang/rust) code.
 
-[There are over 450 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are over 500 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
 
 Lints are divided into categories, each with a default [lint level](https://doc.rust-lang.org/rustc/lints/levels.html).
 You can choose how much Clippy is supposed to ~~annoy~~ help you by changing the lint level by category.
@@ -37,8 +37,8 @@ Table of contents:
 
 ## Usage
 
-Below are instructions on how to use Clippy as a subcommand, compiled from source
-or in Travis CI.
+Below are instructions on how to use Clippy as a cargo subcommand,
+in projects that do not use cargo, or in Travis CI.
 
 ### As a cargo subcommand (`cargo clippy`)
 
@@ -98,22 +98,18 @@ If you want to run Clippy **only** on the given crate, use the `--no-deps` optio
 cargo clippy -p example -- --no-deps
 ```
 
-### As a rustc replacement (`clippy-driver`)
+### Using `clippy-driver`
 
-Clippy can also be used in projects that do not use cargo. To do so, you will need to replace
-your `rustc` compilation commands with `clippy-driver`. For example, if your project runs:
-
-```terminal
-rustc --edition 2018 -Cpanic=abort foo.rs
-```
-
-Then, to enable Clippy, you will need to call:
+Clippy can also be used in projects that do not use cargo. To do so, run `clippy-driver`
+with the same arguments you use for `rustc`. For example:
 
 ```terminal
 clippy-driver --edition 2018 -Cpanic=abort foo.rs
 ```
 
-Note that `rustc` will still run, i.e. it will still emit the output files it normally does.
+Note that `clippy-driver` is designed for running Clippy only and should not be used as a general
+replacement for `rustc`. `clippy-driver` may produce artifacts that are not optimized as expected,
+for example.
 
 ### Travis CI
 

src/tools/clippy/clippy_dev/src/fmt.rs

@@ -3,7 +3,7 @@ use itertools::Itertools;
 use shell_escape::escape;
 use std::ffi::{OsStr, OsString};
 use std::path::Path;
-use std::process::{self, Command};
+use std::process::{self, Command, Stdio};
 use std::{fs, io};
 use walkdir::WalkDir;
 
@@ -31,6 +31,7 @@ impl From<walkdir::Error> for CliError {
 struct FmtContext {
     check: bool,
     verbose: bool,
+    rustfmt_path: String,
 }
 
 // the "main" function of cargo dev fmt
@@ -102,7 +103,23 @@ Please revert the changes to Cargo.tomls first."
         }
     }
 
-    let context = FmtContext { check, verbose };
+    let output = Command::new("rustup")
+        .args(["which", "rustfmt"])
+        .stderr(Stdio::inherit())
+        .output()
+        .expect("error running `rustup which rustfmt`");
+    if !output.status.success() {
+        eprintln!("`rustup which rustfmt` did not execute successfully");
+        process::exit(1);
+    }
+    let mut rustfmt_path = String::from_utf8(output.stdout).expect("invalid rustfmt path");
+    rustfmt_path.truncate(rustfmt_path.trim_end().len());
+
+    let context = FmtContext {
+        check,
+        verbose,
+        rustfmt_path,
+    };
     let result = try_run(&context);
     let code = match result {
         Ok(true) => 0,
@@ -141,8 +158,12 @@ fn exec(
         println!("{}", format_command(&program, &dir, args));
     }
 
-    let child = Command::new(&program).current_dir(&dir).args(args.iter()).spawn()?;
-    let output = child.wait_with_output()?;
+    let output = Command::new(&program)
+        .env("RUSTFMT", &context.rustfmt_path)
+        .current_dir(&dir)
+        .args(args.iter())
+        .output()
+        .unwrap();
     let success = output.status.success();
 
     if !context.check && !success {
@@ -159,7 +180,6 @@ fn exec(
 fn cargo_fmt(context: &FmtContext, path: &Path) -> Result<bool, CliError> {
     let mut args = vec!["fmt", "--all"];
     if context.check {
-        args.push("--");
         args.push("--check");
     }
     let success = exec(context, "cargo", path, &args)?;
@@ -200,7 +220,7 @@ fn rustfmt(context: &FmtContext, paths: impl Iterator<Item = OsString>) -> Resul
     }
     args.extend(paths);
 
-    let success = exec(context, "rustfmt", std::env::current_dir()?, &args)?;
+    let success = exec(context, &context.rustfmt_path, std::env::current_dir()?, &args)?;
 
     Ok(success)
 }

src/tools/clippy/clippy_dev/src/update_lints.rs

@@ -321,7 +321,7 @@ fn gen_register_lint_list<'a>(
 
     for (is_public, module_name, lint_name) in details {
         if !is_public {
-            output.push_str("    #[cfg(feature = \"internal-lints\")]\n");
+            output.push_str("    #[cfg(feature = \"internal\")]\n");
         }
         output.push_str(&format!("    {}::{},\n", module_name, lint_name));
     }