Auto merge of rust-lang#123465 - flip1995:clippy-subtree-update, r=Manishearth

Clippy subtree update

r? `@Manishearth`

Author: bors

Cargo.lock

@@ -593,7 +593,6 @@ dependencies = [
  "syn 2.0.55",
  "tempfile",
  "termize",
- "tester",
  "tokio",
  "toml 0.7.8",
  "ui_test 0.22.2",
@@ -5508,19 +5507,6 @@ dependencies = [
  "std",
 ]
 
-[[package]]
-name = "tester"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89e8bf7e0eb2dd7b4228cc1b6821fc5114cd6841ae59f652a85488c016091e5f"
-dependencies = [
- "cfg-if",
- "getopts",
- "libc",
- "num_cpus",
- "term",
-]
-
 [[package]]
 name = "thin-vec"
 version = "0.2.13"

src/tools/clippy/.gitignore

@@ -1,3 +1,6 @@
+# Generated by ui-test
+rustc-ice-*
+
 # Used by CI to be able to push:
 /.github/deploy_key
 out

src/tools/clippy/CHANGELOG.md

@@ -5379,6 +5379,7 @@ Released 2018-09-13
 [`large_stack_arrays`]: https://rust-lang.github.io/rust-clippy/master/index.html#large_stack_arrays
 [`large_stack_frames`]: https://rust-lang.github.io/rust-clippy/master/index.html#large_stack_frames
 [`large_types_passed_by_value`]: https://rust-lang.github.io/rust-clippy/master/index.html#large_types_passed_by_value
+[`legacy_numeric_constants`]: https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
 [`len_without_is_empty`]: https://rust-lang.github.io/rust-clippy/master/index.html#len_without_is_empty
 [`len_zero`]: https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
 [`let_and_return`]: https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
@@ -5481,6 +5482,7 @@ Released 2018-09-13
 [`missing_safety_doc`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_safety_doc
 [`missing_spin_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_spin_loop
 [`missing_trait_methods`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_trait_methods
+[`missing_transmute_annotations`]: https://rust-lang.github.io/rust-clippy/master/index.html#missing_transmute_annotations
 [`mistyped_literal_suffixes`]: https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes
 [`mixed_attributes_style`]: https://rust-lang.github.io/rust-clippy/master/index.html#mixed_attributes_style
 [`mixed_case_hex_literals`]: https://rust-lang.github.io/rust-clippy/master/index.html#mixed_case_hex_literals

src/tools/clippy/Cargo.toml

@@ -31,7 +31,6 @@ anstream = "0.6.0"
 
 [dev-dependencies]
 ui_test = "0.22.2"
-tester = "0.9"
 regex = "1.5.5"
 toml = "0.7.3"
 walkdir = "2.3"

src/tools/clippy/book/src/SUMMARY.md

@@ -32,3 +32,4 @@
     - [Proposals](development/proposals/README.md)
         - [Roadmap 2021](development/proposals/roadmap-2021.md)
         - [Syntax Tree Patterns](development/proposals/syntax-tree-patterns.md)
+    - [The Team](development/the_team.md)

src/tools/clippy/book/src/development/defining_lints.md

@@ -62,9 +62,8 @@ $ cargo dev new_lint --name=lint_name --pass=late --category=pedantic
 There are two things to note here:
 
 1. `--pass`: We set `--pass=late` in this command to do a late lint pass. The
-   alternative is an `early` lint pass. We will discuss this difference in a
-   later chapter.
-   <!-- FIXME: Link that "later chapter" when lint_passes.md is merged -->
+   alternative is an `early` lint pass. We will discuss this difference in the
+   [Lint Passes] chapter.
 2. `--category`: If not provided, the `category` of this new lint will default
    to `nursery`.
 
@@ -194,12 +193,12 @@ store.register_late_pass(|_| Box::new(foo_functions::FooFunctions));
 
 As you might have guessed, where there's something late, there is something
 early: in Clippy there is a `register_early_pass` method as well. More on early
-vs. late passes in a later chapter.
-<!-- FIXME: Link that "later chapter" when lint_passes.md is merged -->
+vs. late passes in the [Lint Passes] chapter.
 
 Without a call to one of `register_early_pass` or `register_late_pass`, the lint
 pass in question will not be run.
 
 
 [all_lints]: https://rust-lang.github.io/rust-clippy/master/
 [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
+[Lint Passes]: lint_passes.md

src/tools/clippy/book/src/development/lint_passes.md

@@ -50,7 +50,7 @@ questions already, but the parser is okay with it. This is what we
 mean when we say `EarlyLintPass` deals with only syntax on the AST level.
 
 Alternatively, think of the `foo_functions` lint we mentioned in
-define new lints <!-- FIXME: add link --> chapter.
+the [Define New Lints](defining_lints.md) chapter.
 
 We want the `foo_functions` lint to detect functions with `foo` as their name.
 Writing a lint that only checks for the name of a function means that we only

src/tools/clippy/book/src/development/the_team.md

@@ -0,0 +1,130 @@
+# The team
+
+Everyone who contributes to Clippy makes the project what it is. Collaboration
+and discussions are the lifeblood of every open-source project. Clippy has a
+very flat hierarchy. The teams mainly have additional access rights to the repo.
+
+This document outlines the onboarding process, as well as duties, and access
+rights for members of a group.
+
+All regular events mentioned in this chapter are tracked in the [calendar repository].
+The calendar file is also available for download: [clippy.ics]
+
+## Everyone
+
+Everyone, including you, is welcome to join discussions and contribute in other
+ways, like PRs.
+
+You also have some triage rights, using `@rustbot` to add labels and claim
+issues. See [labeling with @rustbot].
+
+A rule for everyone should be to keep a healthy work-life balance. Take a break
+when you need one.
+
+## Clippy-Contributors
+
+This is a group of regular contributors to Clippy to help with triaging.
+
+### Duties
+
+This team exists to make contributing easier for regular members. It doesn't
+carry any duties that need to be done. However, we want to encourage members of
+this group to help with triaging, which can include:
+
+1. **Labeling issues**
+
+    For the `good-first-issue` label, it can still be good to use `@rustbot` to
+    subscribe to the issue and help interested parties, if they post questions
+    in the comments. 
+
+2. **Closing duplicate or resolved issues**
+
+    When you manually close an issue, it's often a good idea, to add a short
+    comment explaining the reason.
+
+3. **Ping people after two weeks of inactivity**
+
+    We try to keep issue assignments and PRs fairly up-to-date. After two weeks,
+    it can be good to send a friendly ping to the delaying party.
+
+    You might close a PR with the `I-inactive-closed` label if the author is
+    busy or wants to abandon it. If the reviewer is busy, the PR can be
+    reassigned to someone else.
+
+    Checkout: https://triage.rust-lang.org/triage/rust-lang/rust-clippy to
+    monitor PRs.
+
+While not part of their duties, contributors are encouraged to review PRs
+and help on Zulip. The team always appreciates help!
+
+### Membership
+
+If you have been contributing to Clippy for some time, we'll probably ask you if
+you want to join this team. Members of this team are also welcome to suggest
+people who they think would make a great addition to this group.
+
+For this group, there is no direct onboarding process. You're welcome to just
+continue what you've been doing. If you like, you can ask for someone to mentor
+you, either in the Clippy stream on Zulip or privately via a PM.
+
+If you have been inactive in Clippy for over three months, we'll probably move
+you to the alumni group. You're always welcome to come back.
+
+## The Clippy Team
+
+[The Clippy team](https://www.rust-lang.org/governance/teams/dev-tools#Clippy%20team)
+is responsible for maintaining Clippy.
+
+### Duties
+
+1. **Respond to PRs in a timely manner**
+
+    It's totally fine, if you don't have the time for reviews right now.
+    You can reassign the PR to a random member by commenting `r? clippy`.
+
+2. **Take a break when you need one**
+
+    You are valuable! Clippy wouldn't be what it is without you. So take a break
+    early and recharge some energy when you need to.
+
+3. **Be responsive on Zulip**
+
+    This means in a reasonable time frame, so responding within one or two days
+    is totally fine.
+
+    It's also good, if you answer threads on Zulip and take part in our Clippy
+    meetings, every two weeks. The meeting dates are tracked in the [calendar repository].
+    
+
+4. **Sync Clippy with the rust-lang/rust repo**
+
+    This is done every two weeks, usually by @flip1995.
+
+5. **Update the changelog**
+
+    This needs to be done for every release, every six weeks. This is usually
+    done by @xFrednet.
+
+### Membership
+
+If you have been active for some time, we'll probably reach out and ask
+if you want to help with reviews and eventually join the Clippy team.
+
+During the onboarding process, you'll be assigned pull requests to review.
+You'll also have an active team member as a mentor who'll stay in contact via
+Zulip DMs to provide advice and feedback. If you have questions, you're always
+welcome to ask, that is the best way to learn. Once you're done with the review,
+you can ping your mentor for a full review and to r+ the PR in both of your names.
+
+When your mentor is confident that you can handle reviews on your own, they'll
+start an informal vote among the active team members to officially add you to
+the team. This vote is usually accepted unanimously. Then you'll be added to
+the team once you've confirmed that you're still interested in joining. The
+onboarding phase typically takes a couple of weeks to a few months.
+
+If you have been inactive in Clippy for over three months, we'll probably move
+you to the alumni group. You're always welcome to come back.
+
+[calendar repository]: https://github.com/rust-lang/calendar/blob/main/clippy.toml
+[clippy.ics]: https://rust-lang.github.io/calendar/clippy.ics
+[labeling with @rustbot]: https://forge.rust-lang.org/triagebot/labeling.html

src/tools/clippy/book/src/lint_configuration.md

@@ -616,6 +616,7 @@ The minimum rust version that the project supports. Defaults to the `rust-versio
 * [`if_then_some_else_none`](https://rust-lang.github.io/rust-clippy/master/index.html#if_then_some_else_none)
 * [`index_refutable_slice`](https://rust-lang.github.io/rust-clippy/master/index.html#index_refutable_slice)
 * [`iter_kv_map`](https://rust-lang.github.io/rust-clippy/master/index.html#iter_kv_map)
+* [`legacy_numeric_constants`](https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants)
 * [`manual_bits`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits)
 * [`manual_c_str_literals`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_c_str_literals)
 * [`manual_clamp`](https://rust-lang.github.io/rust-clippy/master/index.html#manual_clamp)

src/tools/clippy/clippy_config/src/conf.rs

@@ -262,7 +262,7 @@ define_Conf! {
     ///
     /// Suppress lints whenever the suggested change would cause breakage for other crates.
     (avoid_breaking_exported_api: bool = true),
-    /// Lint: MANUAL_SPLIT_ONCE, MANUAL_STR_REPEAT, CLONED_INSTEAD_OF_COPIED, REDUNDANT_FIELD_NAMES, OPTION_MAP_UNWRAP_OR, REDUNDANT_STATIC_LIFETIMES, FILTER_MAP_NEXT, CHECKED_CONVERSIONS, MANUAL_RANGE_CONTAINS, USE_SELF, MEM_REPLACE_WITH_DEFAULT, MANUAL_NON_EXHAUSTIVE, OPTION_AS_REF_DEREF, MAP_UNWRAP_OR, MATCH_LIKE_MATCHES_MACRO, MANUAL_STRIP, MISSING_CONST_FOR_FN, UNNESTED_OR_PATTERNS, FROM_OVER_INTO, PTR_AS_PTR, IF_THEN_SOME_ELSE_NONE, APPROX_CONSTANT, DEPRECATED_CFG_ATTR, INDEX_REFUTABLE_SLICE, MAP_CLONE, BORROW_AS_PTR, MANUAL_BITS, ERR_EXPECT, CAST_ABS_TO_UNSIGNED, UNINLINED_FORMAT_ARGS, MANUAL_CLAMP, MANUAL_LET_ELSE, UNCHECKED_DURATION_SUBTRACTION, COLLAPSIBLE_STR_REPLACE, SEEK_FROM_CURRENT, SEEK_REWIND, UNNECESSARY_LAZY_EVALUATIONS, TRANSMUTE_PTR_TO_REF, ALMOST_COMPLETE_RANGE, NEEDLESS_BORROW, DERIVABLE_IMPLS, MANUAL_IS_ASCII_CHECK, MANUAL_REM_EUCLID, MANUAL_RETAIN, TYPE_REPETITION_IN_BOUNDS, TUPLE_ARRAY_CONVERSIONS, MANUAL_TRY_FOLD, MANUAL_HASH_ONE, ITER_KV_MAP, MANUAL_C_STR_LITERALS, ASSIGNING_CLONES.
+    /// Lint: MANUAL_SPLIT_ONCE, MANUAL_STR_REPEAT, CLONED_INSTEAD_OF_COPIED, REDUNDANT_FIELD_NAMES, OPTION_MAP_UNWRAP_OR, REDUNDANT_STATIC_LIFETIMES, FILTER_MAP_NEXT, CHECKED_CONVERSIONS, MANUAL_RANGE_CONTAINS, USE_SELF, MEM_REPLACE_WITH_DEFAULT, MANUAL_NON_EXHAUSTIVE, OPTION_AS_REF_DEREF, MAP_UNWRAP_OR, MATCH_LIKE_MATCHES_MACRO, MANUAL_STRIP, MISSING_CONST_FOR_FN, UNNESTED_OR_PATTERNS, FROM_OVER_INTO, PTR_AS_PTR, IF_THEN_SOME_ELSE_NONE, APPROX_CONSTANT, DEPRECATED_CFG_ATTR, INDEX_REFUTABLE_SLICE, MAP_CLONE, BORROW_AS_PTR, MANUAL_BITS, ERR_EXPECT, CAST_ABS_TO_UNSIGNED, UNINLINED_FORMAT_ARGS, MANUAL_CLAMP, MANUAL_LET_ELSE, UNCHECKED_DURATION_SUBTRACTION, COLLAPSIBLE_STR_REPLACE, SEEK_FROM_CURRENT, SEEK_REWIND, UNNECESSARY_LAZY_EVALUATIONS, TRANSMUTE_PTR_TO_REF, ALMOST_COMPLETE_RANGE, NEEDLESS_BORROW, DERIVABLE_IMPLS, MANUAL_IS_ASCII_CHECK, MANUAL_REM_EUCLID, MANUAL_RETAIN, TYPE_REPETITION_IN_BOUNDS, TUPLE_ARRAY_CONVERSIONS, MANUAL_TRY_FOLD, MANUAL_HASH_ONE, ITER_KV_MAP, MANUAL_C_STR_LITERALS, ASSIGNING_CLONES, LEGACY_NUMERIC_CONSTANTS.
     ///
     /// The minimum rust version that the project supports. Defaults to the `rust-version` field in `Cargo.toml`
     #[default_text = ""]
@@ -856,11 +856,6 @@ mod tests {
             }
         }
 
-        assert!(
-            names.remove("allow-one-hash-in-raw-strings"),
-            "remove this when #11481 is fixed"
-        );
-
         assert!(
             names.is_empty(),
             "Configuration variable lacks test: {names:?}\nAdd a test to `tests/ui-toml`"

src/tools/clippy/clippy_config/src/lib.rs

@@ -1,6 +1,12 @@
 #![feature(rustc_private, let_chains)]
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
-#![warn(rust_2018_idioms, unused_lifetimes)]
+#![warn(
+    trivial_casts,
+    trivial_numeric_casts,
+    rust_2018_idioms,
+    unused_lifetimes,
+    unused_qualifications
+)]
 #![allow(
     clippy::must_use_candidate,
     clippy::missing_panics_doc,

src/tools/clippy/clippy_config/src/msrvs.rs

@@ -36,7 +36,7 @@ msrv_aliases! {
     1,47,0 { TAU, IS_ASCII_DIGIT_CONST, ARRAY_IMPL_ANY_LEN }
     1,46,0 { CONST_IF_MATCH }
     1,45,0 { STR_STRIP_PREFIX }
-    1,43,0 { LOG2_10, LOG10_2 }
+    1,43,0 { LOG2_10, LOG10_2, NUMERIC_ASSOCIATED_CONSTANTS }
     1,42,0 { MATCHES_MACRO, SLICE_PATTERNS, PTR_SLICE_RAW_PARTS }
     1,41,0 { RE_REBALANCING_COHERENCE, RESULT_MAP_OR_ELSE }
     1,40,0 { MEM_TAKE, NON_EXHAUSTIVE, OPTION_AS_DEREF }

src/tools/clippy/clippy_dev/src/lib.rs

@@ -2,8 +2,13 @@
 #![feature(let_chains)]
 #![feature(rustc_private)]
 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
-// warn on lints, that are included in `rust-lang/rust`s bootstrap
-#![warn(rust_2018_idioms, unused_lifetimes)]
+#![warn(
+    trivial_casts,
+    trivial_numeric_casts,
+    rust_2018_idioms,
+    unused_lifetimes,
+    unused_qualifications
+)]
 
 // The `rustc_driver` crate seems to be required in order to use the `rust_lexer` crate.
 #[allow(unused_extern_crates)]

src/tools/clippy/clippy_dev/src/lint.rs

@@ -20,6 +20,8 @@ pub fn run<'a>(path: &str, args: impl Iterator<Item = &'a String>) {
                 .args(["--edition", "2021"])
                 .arg(path)
                 .args(args)
+                // Prevent rustc from creating `rustc-ice-*` files the console output is enough.
+                .env("RUSTC_ICE", "0")
                 .status(),
         );
     } else {
@@ -32,6 +34,8 @@ pub fn run<'a>(path: &str, args: impl Iterator<Item = &'a String>) {
         let status = Command::new(cargo_clippy_path())
             .arg("clippy")
             .args(args)
+            // Prevent rustc from creating `rustc-ice-*` files the console output is enough.
+            .env("RUSTC_ICE", "0")
             .current_dir(path)
             .status();
 

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

@@ -992,7 +992,7 @@ fn replace_region_in_text<'a>(
 }
 
 fn try_rename_file(old_name: &Path, new_name: &Path) -> bool {
-    match fs::OpenOptions::new().create_new(true).write(true).open(new_name) {
+    match OpenOptions::new().create_new(true).write(true).open(new_name) {
         Ok(file) => drop(file),
         Err(e) if matches!(e.kind(), io::ErrorKind::AlreadyExists | io::ErrorKind::NotFound) => return false,
         Err(e) => panic_file(e, new_name, "create"),
@@ -1016,7 +1016,7 @@ fn panic_file(error: io::Error, name: &Path, action: &str) -> ! {
 }
 
 fn rewrite_file(path: &Path, f: impl FnOnce(&str) -> Option<String>) {
-    let mut file = fs::OpenOptions::new()
+    let mut file = OpenOptions::new()
         .write(true)
         .read(true)
         .open(path)

src/tools/clippy/clippy_lints/src/approx_const.rs

@@ -95,7 +95,7 @@ impl ApproxConstant {
                         cx,
                         APPROX_CONSTANT,
                         e.span,
-                        &format!("approximate value of `{module}::consts::{}` found", &name),
+                        format!("approximate value of `{module}::consts::{}` found", &name),
                         None,
                         "consider using the constant directly",
                     );

src/tools/clippy/clippy_lints/src/asm_syntax.rs

@@ -53,9 +53,9 @@ fn check_asm_syntax(
                 cx,
                 lint,
                 span,
-                &format!("{style} x86 assembly syntax used"),
+                format!("{style} x86 assembly syntax used"),
                 None,
-                &format!("use {} x86 assembly syntax", !style),
+                format!("use {} x86 assembly syntax", !style),
             );
         }
     }

src/tools/clippy/clippy_lints/src/assertions_on_constants.rs

@@ -58,7 +58,7 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnConstants {
                 cx,
                 ASSERTIONS_ON_CONSTANTS,
                 macro_call.span,
-                &format!(
+                format!(
                     "`{}!(true)` will be optimized out by the compiler",
                     cx.tcx.item_name(macro_call.def_id)
                 ),
@@ -74,9 +74,9 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnConstants {
                 cx,
                 ASSERTIONS_ON_CONSTANTS,
                 macro_call.span,
-                &format!("`assert!(false{assert_arg})` should probably be replaced"),
+                format!("`assert!(false{assert_arg})` should probably be replaced"),
                 None,
-                &format!("use `panic!({panic_arg})` or `unreachable!({panic_arg})`"),
+                format!("use `panic!({panic_arg})` or `unreachable!({panic_arg})`"),
             );
         }
     }