Auto merge of #98706 - flip1995:clippyup, r=Dylan-DPC

Update Clippy

r? `@Manishearth`

Author: bors

Diff for: Cargo.lock

@@ -638,7 +638,7 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.1.63"
+version = "0.1.64"
 dependencies = [
  "clippy_lints",
  "clippy_utils",
@@ -661,6 +661,7 @@ dependencies = [
  "termize",
  "tester",
  "tokio",
+ "toml",
 ]
 
 [[package]]
@@ -679,10 +680,9 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.1.63"
+version = "0.1.64"
 dependencies = [
  "cargo_metadata",
- "clippy_dev",
  "clippy_utils",
  "if_chain",
  "itertools",
@@ -702,7 +702,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_utils"
-version = "0.1.63"
+version = "0.1.64"
 dependencies = [
  "arrayvec",
  "if_chain",

Diff for: src/tools/clippy/.github/workflows/remark.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Setup Node.js
       uses: actions/[email protected]
       with:
-        node-version: '12.x'
+        node-version: '14.x'
 
     - name: Install remark
       run: npm install remark-cli remark-lint remark-lint-maximum-line-length remark-preset-lint-recommended remark-gfm

Diff for: src/tools/clippy/CHANGELOG.md

@@ -3348,6 +3348,7 @@ Released 2018-09-13
 [`debug_assert_with_mut_call`]: https://rust-lang.github.io/rust-clippy/master/index.html#debug_assert_with_mut_call
 [`decimal_literal_representation`]: https://rust-lang.github.io/rust-clippy/master/index.html#decimal_literal_representation
 [`declare_interior_mutable_const`]: https://rust-lang.github.io/rust-clippy/master/index.html#declare_interior_mutable_const
+[`default_instead_of_iter_empty`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_instead_of_iter_empty
 [`default_numeric_fallback`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_numeric_fallback
 [`default_trait_access`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_trait_access
 [`default_union_representation`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_union_representation
@@ -3399,6 +3400,7 @@ Released 2018-09-13
 [`expect_fun_call`]: https://rust-lang.github.io/rust-clippy/master/index.html#expect_fun_call
 [`expect_used`]: https://rust-lang.github.io/rust-clippy/master/index.html#expect_used
 [`expl_impl_clone_on_copy`]: https://rust-lang.github.io/rust-clippy/master/index.html#expl_impl_clone_on_copy
+[`explicit_auto_deref`]: https://rust-lang.github.io/rust-clippy/master/index.html#explicit_auto_deref
 [`explicit_counter_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
 [`explicit_deref_methods`]: https://rust-lang.github.io/rust-clippy/master/index.html#explicit_deref_methods
 [`explicit_into_iter_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#explicit_into_iter_loop
@@ -3519,13 +3521,16 @@ Released 2018-09-13
 [`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`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find
 [`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
 [`manual_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
 [`manual_memcpy`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
 [`manual_non_exhaustive`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_non_exhaustive
 [`manual_ok_or`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_or
 [`manual_range_contains`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
+[`manual_rem_euclid`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_rem_euclid
+[`manual_retain`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_retain
 [`manual_saturating_arithmetic`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_saturating_arithmetic
 [`manual_split_once`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_split_once
 [`manual_str_repeat`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_str_repeat

Diff for: src/tools/clippy/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.63"
+version = "0.1.64"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"
@@ -31,6 +31,7 @@ termize = "0.1"
 compiletest_rs = { version = "0.8", features = ["tmp"] }
 tester = "0.9"
 regex = "1.5"
+toml = "0.5"
 # This is used by the `collect-metadata` alias.
 filetime = "0.2"
 

Diff for: 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 500 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are over 550 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.
@@ -214,6 +214,14 @@ specifying the minimum supported Rust version (MSRV) in the clippy configuration
 msrv = "1.30.0"
 ```
 
+Alternatively, the [`rust-version` field](https://doc.rust-lang.org/cargo/reference/manifest.html#the-rust-version-field)
+in the `Cargo.toml` can be used.
+
+```toml
+# Cargo.toml
+rust-version = "1.30"
+```
+
 The MSRV can also be specified as an inner attribute, like below.
 
 ```rust

Diff for: src/tools/clippy/book/src/README.md

@@ -6,7 +6,7 @@
 A collection of lints to catch common mistakes and improve your
 [Rust](https://github.com/rust-lang/rust) code.
 
-[There are over 500 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are over 550 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

Diff for: src/tools/clippy/clippy_dev/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2021"
 
 [dependencies]
 aho-corasick = "0.7"
-clap = "3.1"
+clap = "3.2"
 indoc = "1.0"
 itertools = "0.10.1"
 opener = "0.5"

Diff for: src/tools/clippy/clippy_dev/src/main.rs

@@ -5,6 +5,7 @@
 use clap::{Arg, ArgAction, ArgMatches, Command, PossibleValue};
 use clippy_dev::{bless, fmt, lint, new_lint, serve, setup, update_lints};
 use indoc::indoc;
+
 fn main() {
     let matches = get_clap_config();
 
@@ -85,6 +86,11 @@ fn main() {
             let uplift = matches.contains_id("uplift");
             update_lints::rename(old_name, new_name, uplift);
         },
+        Some(("deprecate", matches)) => {
+            let name = matches.get_one::<String>("name").unwrap();
+            let reason = matches.get_one("reason");
+            update_lints::deprecate(name, reason);
+        },
         _ => {},
     }
 }
@@ -266,6 +272,18 @@ fn get_clap_config() -> ArgMatches {
                     .long("uplift")
                     .help("This lint will be uplifted into rustc"),
             ]),
+            Command::new("deprecate").about("Deprecates the given lint").args([
+                Arg::new("name")
+                    .index(1)
+                    .required(true)
+                    .help("The name of the lint to deprecate"),
+                Arg::new("reason")
+                    .long("reason")
+                    .short('r')
+                    .required(false)
+                    .takes_value(true)
+                    .help("The reason for deprecation"),
+            ]),
         ])
         .get_matches()
 }

Diff for: src/tools/clippy/clippy_dev/src/new_lint.rs

@@ -138,7 +138,7 @@ fn to_camel_case(name: &str) -> String {
         .collect()
 }
 
-fn get_stabilization_version() -> String {
+pub(crate) fn get_stabilization_version() -> String {
     fn parse_manifest(contents: &str) -> Option<String> {
         let version = contents
             .lines()