clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(rustc_private)]
   5 #![feature(slice_patterns)]
   6 #![feature(stmt_expr_attributes)]
   7 #![feature(range_contains)]
   8 #![feature(macro_vis_matcher)]
   9 #![allow(unknown_lints, shadow_reuse, missing_docs_in_private_items)]
  10 #![recursion_limit = "256"]
  11 #![allow(stable_features)]
  12 #![feature(iterator_find_map)]
  13 #![feature(macro_at_most_once_rep)]
  14 #![feature(tool_attributes)]
  15 #![warn(rust_2018_idioms)]
  16
  17 use toml;
  18 use rustc_plugin;
  19 use rustc;
  20
  21
  22 macro_rules! declare_clippy_lint {
  23     { pub $name:tt, style, $description:tt } => {
  24         declare_lint! { pub $name, Warn, $description, report_in_external_macro: true }
  25     };
  26     { pub $name:tt, correctness, $description:tt } => {
  27         declare_lint! { pub $name, Deny, $description, report_in_external_macro: true }
  28     };
  29     { pub $name:tt, complexity, $description:tt } => {
  30         declare_lint! { pub $name, Warn, $description, report_in_external_macro: true }
  31     };
  32     { pub $name:tt, perf, $description:tt } => {
  33         declare_lint! { pub $name, Warn, $description, report_in_external_macro: true }
  34     };
  35     { pub $name:tt, pedantic, $description:tt } => {
  36         declare_lint! { pub $name, Allow, $description, report_in_external_macro: true }
  37     };
  38     { pub $name:tt, restriction, $description:tt } => {
  39         declare_lint! { pub $name, Allow, $description, report_in_external_macro: true }
  40     };
  41     { pub $name:tt, cargo, $description:tt } => {
  42         declare_lint! { pub $name, Allow, $description, report_in_external_macro: true }
  43     };
  44     { pub $name:tt, nursery, $description:tt } => {
  45         declare_lint! { pub $name, Allow, $description, report_in_external_macro: true }
  46     };
  47     { pub $name:tt, internal, $description:tt } => {
  48         declare_lint! { pub $name, Allow, $description, report_in_external_macro: true }
  49     };
  50     { pub $name:tt, internal_warn, $description:tt } => {
  51         declare_lint! { pub $name, Warn, $description, report_in_external_macro: true }
  52     };
  53 }
  54
  55 pub mod consts;
  56 #[macro_use]
  57 pub mod utils;
  58
  59 // begin lints modules, do not remove this comment, it’s used in `update_lints`
  60 pub mod approx_const;
  61 pub mod arithmetic;
  62 pub mod assign_ops;
  63 pub mod attrs;
  64 pub mod bit_mask;
  65 pub mod blacklisted_name;
  66 pub mod block_in_if_condition;
  67 pub mod booleans;
  68 pub mod bytecount;
  69 pub mod collapsible_if;
  70 pub mod const_static_lifetime;
  71 pub mod copies;
  72 pub mod cyclomatic_complexity;
  73 pub mod default_trait_access;
  74 pub mod derive;
  75 pub mod doc;
  76 pub mod double_comparison;
  77 pub mod double_parens;
  78 pub mod drop_forget_ref;
  79 pub mod duration_subsec;
  80 pub mod else_if_without_else;
  81 pub mod empty_enum;
  82 pub mod entry;
  83 pub mod enum_clike;
  84 pub mod enum_glob_use;
  85 pub mod enum_variants;
  86 pub mod eq_op;
  87 pub mod erasing_op;
  88 pub mod escape;
  89 pub mod eta_reduction;
  90 pub mod eval_order_dependence;
  91 pub mod excessive_precision;
  92 pub mod explicit_write;
  93 pub mod fallible_impl_from;
  94 pub mod format;
  95 pub mod formatting;
  96 pub mod functions;
  97 pub mod identity_conversion;
  98 pub mod identity_op;
  99 pub mod if_let_redundant_pattern_matching;
 100 pub mod if_not_else;
 101 pub mod indexing_slicing;
 102 pub mod infallible_destructuring_match;
 103 pub mod infinite_iter;
 104 pub mod inherent_impl;
 105 pub mod inline_fn_without_body;
 106 pub mod int_plus_one;
 107 pub mod invalid_ref;
 108 pub mod items_after_statements;
 109 pub mod large_enum_variant;
 110 pub mod len_zero;
 111 pub mod let_if_seq;
 112 pub mod lifetimes;
 113 pub mod literal_representation;
 114 pub mod loops;
 115 pub mod map_clone;
 116 pub mod map_unit_fn;
 117 pub mod matches;
 118 pub mod mem_forget;
 119 pub mod methods;
 120 pub mod minmax;
 121 pub mod misc;
 122 pub mod misc_early;
 123 pub mod missing_doc;
 124 pub mod missing_inline;
 125 pub mod multiple_crate_versions;
 126 pub mod mut_mut;
 127 pub mod mut_reference;
 128 pub mod mutex_atomic;
 129 pub mod needless_bool;
 130 pub mod needless_borrow;
 131 pub mod needless_borrowed_ref;
 132 pub mod needless_continue;
 133 pub mod needless_pass_by_value;
 134 pub mod needless_update;
 135 pub mod neg_cmp_op_on_partial_ord;
 136 pub mod neg_multiply;
 137 pub mod new_without_default;
 138 pub mod no_effect;
 139 pub mod non_copy_const;
 140 pub mod non_expressive_names;
 141 pub mod ok_if_let;
 142 pub mod open_options;
 143 pub mod overflow_check_conditional;
 144 pub mod panic_unimplemented;
 145 pub mod partialeq_ne_impl;
 146 pub mod precedence;
 147 pub mod ptr;
 148 pub mod question_mark;
 149 pub mod ranges;
 150 pub mod redundant_field_names;
 151 pub mod reference;
 152 pub mod regex;
 153 pub mod replace_consts;
 154 pub mod returns;
 155 pub mod serde_api;
 156 pub mod shadow;
 157 pub mod strings;
 158 pub mod suspicious_trait_impl;
 159 pub mod swap;
 160 pub mod temporary_assignment;
 161 pub mod transmute;
 162 pub mod trivially_copy_pass_by_ref;
 163 pub mod types;
 164 pub mod unicode;
 165 pub mod unsafe_removed_from_name;
 166 pub mod unused_io_amount;
 167 pub mod unused_label;
 168 pub mod unwrap;
 169 pub mod use_self;
 170 pub mod vec;
 171 pub mod write;
 172 pub mod zero_div_zero;
 173 // end lints modules, do not remove this comment, it’s used in `update_lints`
 174
 175 use crate::utils::conf::Conf;
 176
 177 mod reexport {
 178     crate use syntax::ast::{Name, NodeId};
 179 }
 180
 181 pub fn register_pre_expansion_lints(session: &rustc::session::Session, store: &mut rustc::lint::LintStore, conf: &Conf) {
 182     store.register_pre_expansion_pass(Some(session), box write::Pass);
 183     store.register_pre_expansion_pass(Some(session), box redundant_field_names::RedundantFieldNames);
 184     store.register_pre_expansion_pass(Some(session), box non_expressive_names::NonExpressiveNames {
 185         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 186     });
 187 }
 188
 189 pub fn read_conf(reg: &rustc_plugin::Registry<'_>) -> Conf {
 190     match utils::conf::file_from_args(reg.args()) {
 191         Ok(file_name) => {
 192             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 193             // do not require the file to exist
 194             let file_name = if let Some(file_name) = file_name {
 195                 Some(file_name)
 196             } else {
 197                 match utils::conf::lookup_conf_file() {
 198                     Ok(path) => path,
 199                     Err(error) => {
 200                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 201                         None
 202                     }
 203                 }
 204             };
 205
 206             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 207                 reg.sess
 208                     .local_crate_source_file
 209                     .as_ref()
 210                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 211                     .unwrap_or_default()
 212                     .join(file_name)
 213             } else {
 214                 file_name
 215             });
 216
 217             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 218
 219             // all conf errors are non-fatal, we just use the default conf in case of error
 220             for error in errors {
 221                 reg.sess.struct_err(&format!("error reading Clippy's configuration file `{}`: {}", file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""), error)).emit();
 222             }
 223
 224             conf
 225         }
 226         Err((err, span)) => {
 227             reg.sess.struct_span_err(span, err)
 228                     .span_note(span, "Clippy will use default configuration")
 229                     .emit();
 230             toml::from_str("").expect("we never error on empty config files")
 231         }
 232     }
 233 }
 234
 235 #[rustfmt::skip]
 236 pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
 237     let mut store = reg.sess.lint_store.borrow_mut();
 238     store.register_removed(
 239         "should_assert_eq",
 240         "`assert!()` will be more flexible with RFC 2011",
 241     );
 242     store.register_removed(
 243         "extend_from_slice",
 244         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 245     );
 246     store.register_removed(
 247         "range_step_by_zero",
 248         "`iterator.step_by(0)` panics nowadays",
 249     );
 250     store.register_removed(
 251         "unstable_as_slice",
 252         "`Vec::as_slice` has been stabilized in 1.7",
 253     );
 254     store.register_removed(
 255         "unstable_as_mut_slice",
 256         "`Vec::as_mut_slice` has been stabilized in 1.7",
 257     );
 258     store.register_removed(
 259         "str_to_string",
 260         "using `str::to_string` is common even today and specialization will likely happen soon",
 261     );
 262     store.register_removed(
 263         "string_to_string",
 264         "using `string::to_string` is common even today and specialization will likely happen soon",
 265     );
 266     store.register_removed(
 267         "misaligned_transmute",
 268         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 269     );
 270     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 271
 272     reg.register_late_lint_pass(box serde_api::Serde);
 273     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 274     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 275     reg.register_early_lint_pass(box utils::internal_lints::DefaultHashTypes::default());
 276     reg.register_late_lint_pass(box utils::inspector::Pass);
 277     reg.register_late_lint_pass(box utils::author::Pass);
 278     reg.register_late_lint_pass(box types::TypePass);
 279     reg.register_late_lint_pass(box booleans::NonminimalBool);
 280     reg.register_late_lint_pass(box eq_op::EqOp);
 281     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 282     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 283     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 284     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 285     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 286     reg.register_late_lint_pass(box ptr::PointerPass);
 287     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 288     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 289     reg.register_late_lint_pass(box approx_const::Pass);
 290     reg.register_late_lint_pass(box misc::Pass);
 291     reg.register_early_lint_pass(box precedence::Precedence);
 292     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 293     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 294     reg.register_late_lint_pass(box identity_op::IdentityOp);
 295     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 296     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 297     reg.register_late_lint_pass(box mut_mut::MutMut);
 298     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 299     reg.register_late_lint_pass(box len_zero::LenZero);
 300     reg.register_late_lint_pass(box attrs::AttrPass);
 301     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 302     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 303     reg.register_late_lint_pass(box unicode::Unicode);
 304     reg.register_late_lint_pass(box strings::StringAdd);
 305     reg.register_early_lint_pass(box returns::ReturnPass);
 306     reg.register_late_lint_pass(box methods::Pass);
 307     reg.register_late_lint_pass(box shadow::Pass);
 308     reg.register_late_lint_pass(box types::LetPass);
 309     reg.register_late_lint_pass(box types::UnitCmp);
 310     reg.register_late_lint_pass(box loops::Pass);
 311     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 312     reg.register_late_lint_pass(box entry::HashMapLint);
 313     reg.register_late_lint_pass(box ranges::Pass);
 314     reg.register_late_lint_pass(box types::CastPass);
 315     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 316     reg.register_late_lint_pass(box matches::MatchPass);
 317     reg.register_late_lint_pass(box minmax::MinMaxPass);
 318     reg.register_late_lint_pass(box open_options::NonSensical);
 319     reg.register_late_lint_pass(box zero_div_zero::Pass);
 320     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 321     reg.register_late_lint_pass(box needless_update::Pass);
 322     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 323     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 324     reg.register_late_lint_pass(box no_effect::Pass);
 325     reg.register_late_lint_pass(box map_clone::Pass);
 326     reg.register_late_lint_pass(box temporary_assignment::Pass);
 327     reg.register_late_lint_pass(box transmute::Transmute);
 328     reg.register_late_lint_pass(
 329         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 330     );
 331     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 332     reg.register_early_lint_pass(box misc_early::MiscEarly);
 333     reg.register_late_lint_pass(box panic_unimplemented::Pass);
 334     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 335     reg.register_late_lint_pass(box derive::Derive);
 336     reg.register_late_lint_pass(box types::CharLitAsU8);
 337     reg.register_late_lint_pass(box vec::Pass);
 338     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 339     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 340     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 341     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 342     reg.register_late_lint_pass(box regex::Pass::default());
 343     reg.register_late_lint_pass(box copies::CopyAndPaste);
 344     reg.register_late_lint_pass(box format::Pass);
 345     reg.register_early_lint_pass(box formatting::Formatting);
 346     reg.register_late_lint_pass(box swap::Swap);
 347     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 348     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 349     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 350     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 351     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 352     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 353     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names.clone()));
 354     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 355     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents.clone()));
 356     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 357     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 358     reg.register_late_lint_pass(box mem_forget::MemForget);
 359     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 360     reg.register_late_lint_pass(box assign_ops::AssignOps);
 361     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 362     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 363     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 364     reg.register_late_lint_pass(box missing_inline::MissingInline);
 365     reg.register_late_lint_pass(box ok_if_let::Pass);
 366     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 367     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 368     reg.register_early_lint_pass(box reference::Pass);
 369     reg.register_early_lint_pass(box reference::DerefPass);
 370     reg.register_early_lint_pass(box double_parens::DoubleParens);
 371     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 372     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 373     reg.register_late_lint_pass(box explicit_write::Pass);
 374     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 375
 376     let target = &reg.sess.target;
 377     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 378             conf.trivial_copy_size_limit,
 379             target,
 380     ));
 381     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 382     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 383             conf.literal_representation_threshold
 384     ));
 385     reg.register_late_lint_pass(box use_self::UseSelf);
 386     reg.register_late_lint_pass(box bytecount::ByteCount);
 387     reg.register_late_lint_pass(box infinite_iter::Pass);
 388     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 389     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 390     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 391     reg.register_late_lint_pass(box types::ImplicitHasher);
 392     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 393     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 394     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 395     reg.register_late_lint_pass(box types::UnitArg);
 396     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 397     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 398     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 399     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 400     reg.register_late_lint_pass(box map_unit_fn::Pass);
 401     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 402     reg.register_late_lint_pass(box inherent_impl::Pass::default());
 403     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 404     reg.register_late_lint_pass(box unwrap::Pass);
 405     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 406     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 407     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 408     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 409
 410     reg.register_lint_group("clippy_restriction", vec![
 411         arithmetic::FLOAT_ARITHMETIC,
 412         arithmetic::INTEGER_ARITHMETIC,
 413         assign_ops::ASSIGN_OPS,
 414         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 415         indexing_slicing::INDEXING_SLICING,
 416         inherent_impl::MULTIPLE_INHERENT_IMPL,
 417         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 418         mem_forget::MEM_FORGET,
 419         methods::CLONE_ON_REF_PTR,
 420         methods::OPTION_UNWRAP_USED,
 421         methods::RESULT_UNWRAP_USED,
 422         methods::WRONG_PUB_SELF_CONVENTION,
 423         misc::FLOAT_CMP_CONST,
 424         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 425         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 426         panic_unimplemented::UNIMPLEMENTED,
 427         shadow::SHADOW_REUSE,
 428         shadow::SHADOW_SAME,
 429         strings::STRING_ADD,
 430         write::PRINT_STDOUT,
 431         write::USE_DEBUG,
 432     ]);
 433
 434     reg.register_lint_group("clippy_pedantic", vec![
 435         attrs::INLINE_ALWAYS,
 436         copies::MATCH_SAME_ARMS,
 437         default_trait_access::DEFAULT_TRAIT_ACCESS,
 438         derive::EXPL_IMPL_CLONE_ON_COPY,
 439         doc::DOC_MARKDOWN,
 440         empty_enum::EMPTY_ENUM,
 441         enum_glob_use::ENUM_GLOB_USE,
 442         enum_variants::PUB_ENUM_VARIANT_NAMES,
 443         enum_variants::STUTTER,
 444         if_not_else::IF_NOT_ELSE,
 445         infinite_iter::MAYBE_INFINITE_ITER,
 446         items_after_statements::ITEMS_AFTER_STATEMENTS,
 447         matches::SINGLE_MATCH_ELSE,
 448         methods::FILTER_MAP,
 449         methods::OPTION_MAP_UNWRAP_OR,
 450         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 451         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 452         misc::USED_UNDERSCORE_BINDING,
 453         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 454         mut_mut::MUT_MUT,
 455         needless_continue::NEEDLESS_CONTINUE,
 456         non_expressive_names::SIMILAR_NAMES,
 457         replace_consts::REPLACE_CONSTS,
 458         shadow::SHADOW_UNRELATED,
 459         strings::STRING_ADD_ASSIGN,
 460         types::CAST_POSSIBLE_TRUNCATION,
 461         types::CAST_POSSIBLE_WRAP,
 462         types::CAST_PRECISION_LOSS,
 463         types::CAST_SIGN_LOSS,
 464         types::INVALID_UPCAST_COMPARISONS,
 465         types::LINKEDLIST,
 466         unicode::NON_ASCII_LITERAL,
 467         unicode::UNICODE_NOT_NFC,
 468         use_self::USE_SELF,
 469     ]);
 470
 471     reg.register_lint_group("clippy_internal", vec![
 472         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 473         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 474         utils::internal_lints::DEFAULT_HASH_TYPES,
 475     ]);
 476
 477     reg.register_lint_group("clippy", vec![
 478         approx_const::APPROX_CONSTANT,
 479         assign_ops::ASSIGN_OP_PATTERN,
 480         assign_ops::MISREFACTORED_ASSIGN_OP,
 481         attrs::DEPRECATED_SEMVER,
 482         attrs::USELESS_ATTRIBUTE,
 483         bit_mask::BAD_BIT_MASK,
 484         bit_mask::INEFFECTIVE_BIT_MASK,
 485         bit_mask::VERBOSE_BIT_MASK,
 486         blacklisted_name::BLACKLISTED_NAME,
 487         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 488         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 489         booleans::LOGIC_BUG,
 490         booleans::NONMINIMAL_BOOL,
 491         bytecount::NAIVE_BYTECOUNT,
 492         collapsible_if::COLLAPSIBLE_IF,
 493         const_static_lifetime::CONST_STATIC_LIFETIME,
 494         copies::IF_SAME_THEN_ELSE,
 495         copies::IFS_SAME_COND,
 496         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 497         derive::DERIVE_HASH_XOR_EQ,
 498         double_comparison::DOUBLE_COMPARISONS,
 499         double_parens::DOUBLE_PARENS,
 500         drop_forget_ref::DROP_COPY,
 501         drop_forget_ref::DROP_REF,
 502         drop_forget_ref::FORGET_COPY,
 503         drop_forget_ref::FORGET_REF,
 504         duration_subsec::DURATION_SUBSEC,
 505         entry::MAP_ENTRY,
 506         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 507         enum_variants::ENUM_VARIANT_NAMES,
 508         enum_variants::MODULE_INCEPTION,
 509         eq_op::EQ_OP,
 510         eq_op::OP_REF,
 511         erasing_op::ERASING_OP,
 512         escape::BOXED_LOCAL,
 513         eta_reduction::REDUNDANT_CLOSURE,
 514         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 515         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 516         excessive_precision::EXCESSIVE_PRECISION,
 517         explicit_write::EXPLICIT_WRITE,
 518         format::USELESS_FORMAT,
 519         formatting::POSSIBLE_MISSING_COMMA,
 520         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 521         formatting::SUSPICIOUS_ELSE_FORMATTING,
 522         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 523         functions::TOO_MANY_ARGUMENTS,
 524         identity_conversion::IDENTITY_CONVERSION,
 525         identity_op::IDENTITY_OP,
 526         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 527         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 528         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 529         infinite_iter::INFINITE_ITER,
 530         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 531         int_plus_one::INT_PLUS_ONE,
 532         invalid_ref::INVALID_REF,
 533         large_enum_variant::LARGE_ENUM_VARIANT,
 534         len_zero::LEN_WITHOUT_IS_EMPTY,
 535         len_zero::LEN_ZERO,
 536         let_if_seq::USELESS_LET_IF_SEQ,
 537         lifetimes::EXTRA_UNUSED_LIFETIMES,
 538         lifetimes::NEEDLESS_LIFETIMES,
 539         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 540         literal_representation::LARGE_DIGIT_GROUPS,
 541         literal_representation::UNREADABLE_LITERAL,
 542         loops::EMPTY_LOOP,
 543         loops::EXPLICIT_COUNTER_LOOP,
 544         loops::EXPLICIT_INTO_ITER_LOOP,
 545         loops::EXPLICIT_ITER_LOOP,
 546         loops::FOR_KV_MAP,
 547         loops::FOR_LOOP_OVER_OPTION,
 548         loops::FOR_LOOP_OVER_RESULT,
 549         loops::ITER_NEXT_LOOP,
 550         loops::MANUAL_MEMCPY,
 551         loops::MUT_RANGE_BOUND,
 552         loops::NEEDLESS_RANGE_LOOP,
 553         loops::NEVER_LOOP,
 554         loops::REVERSE_RANGE_LOOP,
 555         loops::UNUSED_COLLECT,
 556         loops::WHILE_IMMUTABLE_CONDITION,
 557         loops::WHILE_LET_LOOP,
 558         loops::WHILE_LET_ON_ITERATOR,
 559         map_clone::MAP_CLONE,
 560         map_unit_fn::OPTION_MAP_UNIT_FN,
 561         map_unit_fn::RESULT_MAP_UNIT_FN,
 562         matches::MATCH_AS_REF,
 563         matches::MATCH_BOOL,
 564         matches::MATCH_OVERLAPPING_ARM,
 565         matches::MATCH_REF_PATS,
 566         matches::MATCH_WILD_ERR_ARM,
 567         matches::SINGLE_MATCH,
 568         methods::CHARS_LAST_CMP,
 569         methods::CHARS_NEXT_CMP,
 570         methods::CLONE_DOUBLE_REF,
 571         methods::CLONE_ON_COPY,
 572         methods::EXPECT_FUN_CALL,
 573         methods::FILTER_NEXT,
 574         methods::GET_UNWRAP,
 575         methods::ITER_CLONED_COLLECT,
 576         methods::ITER_NTH,
 577         methods::ITER_SKIP_NEXT,
 578         methods::NEW_RET_NO_SELF,
 579         methods::OK_EXPECT,
 580         methods::OPTION_MAP_OR_NONE,
 581         methods::OR_FUN_CALL,
 582         methods::SEARCH_IS_SOME,
 583         methods::SHOULD_IMPLEMENT_TRAIT,
 584         methods::SINGLE_CHAR_PATTERN,
 585         methods::STRING_EXTEND_CHARS,
 586         methods::TEMPORARY_CSTRING_AS_PTR,
 587         methods::UNNECESSARY_FOLD,
 588         methods::USELESS_ASREF,
 589         methods::WRONG_SELF_CONVENTION,
 590         minmax::MIN_MAX,
 591         misc::CMP_NAN,
 592         misc::CMP_OWNED,
 593         misc::FLOAT_CMP,
 594         misc::MODULO_ONE,
 595         misc::REDUNDANT_PATTERN,
 596         misc::SHORT_CIRCUIT_STATEMENT,
 597         misc::TOPLEVEL_REF_ARG,
 598         misc::ZERO_PTR,
 599         misc_early::BUILTIN_TYPE_SHADOW,
 600         misc_early::DOUBLE_NEG,
 601         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 602         misc_early::MIXED_CASE_HEX_LITERALS,
 603         misc_early::REDUNDANT_CLOSURE_CALL,
 604         misc_early::UNNEEDED_FIELD_PATTERN,
 605         misc_early::ZERO_PREFIXED_LITERAL,
 606         mut_reference::UNNECESSARY_MUT_PASSED,
 607         mutex_atomic::MUTEX_ATOMIC,
 608         needless_bool::BOOL_COMPARISON,
 609         needless_bool::NEEDLESS_BOOL,
 610         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 611         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 612         needless_update::NEEDLESS_UPDATE,
 613         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 614         neg_multiply::NEG_MULTIPLY,
 615         new_without_default::NEW_WITHOUT_DEFAULT,
 616         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 617         no_effect::NO_EFFECT,
 618         no_effect::UNNECESSARY_OPERATION,
 619         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 620         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 621         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 622         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 623         ok_if_let::IF_LET_SOME_RESULT,
 624         open_options::NONSENSICAL_OPEN_OPTIONS,
 625         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 626         panic_unimplemented::PANIC_PARAMS,
 627         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 628         precedence::PRECEDENCE,
 629         ptr::CMP_NULL,
 630         ptr::MUT_FROM_REF,
 631         ptr::PTR_ARG,
 632         question_mark::QUESTION_MARK,
 633         ranges::ITERATOR_STEP_BY_ZERO,
 634         ranges::RANGE_MINUS_ONE,
 635         ranges::RANGE_ZIP_WITH_LEN,
 636         redundant_field_names::REDUNDANT_FIELD_NAMES,
 637         reference::DEREF_ADDROF,
 638         reference::REF_IN_DEREF,
 639         regex::INVALID_REGEX,
 640         regex::REGEX_MACRO,
 641         regex::TRIVIAL_REGEX,
 642         returns::LET_AND_RETURN,
 643         returns::NEEDLESS_RETURN,
 644         serde_api::SERDE_API_MISUSE,
 645         strings::STRING_LIT_AS_BYTES,
 646         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 647         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 648         swap::ALMOST_SWAPPED,
 649         swap::MANUAL_SWAP,
 650         temporary_assignment::TEMPORARY_ASSIGNMENT,
 651         transmute::CROSSPOINTER_TRANSMUTE,
 652         transmute::TRANSMUTE_BYTES_TO_STR,
 653         transmute::TRANSMUTE_INT_TO_BOOL,
 654         transmute::TRANSMUTE_INT_TO_CHAR,
 655         transmute::TRANSMUTE_INT_TO_FLOAT,
 656         transmute::TRANSMUTE_PTR_TO_PTR,
 657         transmute::TRANSMUTE_PTR_TO_REF,
 658         transmute::USELESS_TRANSMUTE,
 659         transmute::WRONG_TRANSMUTE,
 660         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 661         types::ABSURD_EXTREME_COMPARISONS,
 662         types::BORROWED_BOX,
 663         types::BOX_VEC,
 664         types::CAST_LOSSLESS,
 665         types::CAST_PTR_ALIGNMENT,
 666         types::CHAR_LIT_AS_U8,
 667         types::FN_TO_NUMERIC_CAST,
 668         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 669         types::IMPLICIT_HASHER,
 670         types::LET_UNIT_VALUE,
 671         types::OPTION_OPTION,
 672         types::TYPE_COMPLEXITY,
 673         types::UNIT_ARG,
 674         types::UNIT_CMP,
 675         types::UNNECESSARY_CAST,
 676         unicode::ZERO_WIDTH_SPACE,
 677         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 678         unused_io_amount::UNUSED_IO_AMOUNT,
 679         unused_label::UNUSED_LABEL,
 680         vec::USELESS_VEC,
 681         write::PRINT_LITERAL,
 682         write::PRINT_WITH_NEWLINE,
 683         write::PRINTLN_EMPTY_STRING,
 684         write::WRITE_LITERAL,
 685         write::WRITE_WITH_NEWLINE,
 686         write::WRITELN_EMPTY_STRING,
 687         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 688     ]);
 689
 690     reg.register_lint_group("clippy_style", vec![
 691         assign_ops::ASSIGN_OP_PATTERN,
 692         bit_mask::VERBOSE_BIT_MASK,
 693         blacklisted_name::BLACKLISTED_NAME,
 694         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 695         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 696         collapsible_if::COLLAPSIBLE_IF,
 697         const_static_lifetime::CONST_STATIC_LIFETIME,
 698         enum_variants::ENUM_VARIANT_NAMES,
 699         enum_variants::MODULE_INCEPTION,
 700         eq_op::OP_REF,
 701         eta_reduction::REDUNDANT_CLOSURE,
 702         excessive_precision::EXCESSIVE_PRECISION,
 703         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 704         formatting::SUSPICIOUS_ELSE_FORMATTING,
 705         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 706         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 707         len_zero::LEN_WITHOUT_IS_EMPTY,
 708         len_zero::LEN_ZERO,
 709         let_if_seq::USELESS_LET_IF_SEQ,
 710         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 711         literal_representation::LARGE_DIGIT_GROUPS,
 712         literal_representation::UNREADABLE_LITERAL,
 713         loops::EMPTY_LOOP,
 714         loops::EXPLICIT_INTO_ITER_LOOP,
 715         loops::EXPLICIT_ITER_LOOP,
 716         loops::FOR_KV_MAP,
 717         loops::NEEDLESS_RANGE_LOOP,
 718         loops::WHILE_LET_ON_ITERATOR,
 719         map_clone::MAP_CLONE,
 720         matches::MATCH_BOOL,
 721         matches::MATCH_OVERLAPPING_ARM,
 722         matches::MATCH_REF_PATS,
 723         matches::MATCH_WILD_ERR_ARM,
 724         matches::SINGLE_MATCH,
 725         methods::CHARS_LAST_CMP,
 726         methods::GET_UNWRAP,
 727         methods::ITER_CLONED_COLLECT,
 728         methods::ITER_SKIP_NEXT,
 729         methods::NEW_RET_NO_SELF,
 730         methods::OK_EXPECT,
 731         methods::OPTION_MAP_OR_NONE,
 732         methods::SHOULD_IMPLEMENT_TRAIT,
 733         methods::STRING_EXTEND_CHARS,
 734         methods::UNNECESSARY_FOLD,
 735         methods::WRONG_SELF_CONVENTION,
 736         misc::REDUNDANT_PATTERN,
 737         misc::TOPLEVEL_REF_ARG,
 738         misc::ZERO_PTR,
 739         misc_early::BUILTIN_TYPE_SHADOW,
 740         misc_early::DOUBLE_NEG,
 741         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 742         misc_early::MIXED_CASE_HEX_LITERALS,
 743         misc_early::UNNEEDED_FIELD_PATTERN,
 744         mut_reference::UNNECESSARY_MUT_PASSED,
 745         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 746         neg_multiply::NEG_MULTIPLY,
 747         new_without_default::NEW_WITHOUT_DEFAULT,
 748         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 749         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 750         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 751         ok_if_let::IF_LET_SOME_RESULT,
 752         panic_unimplemented::PANIC_PARAMS,
 753         ptr::CMP_NULL,
 754         ptr::PTR_ARG,
 755         question_mark::QUESTION_MARK,
 756         ranges::RANGE_MINUS_ONE,
 757         redundant_field_names::REDUNDANT_FIELD_NAMES,
 758         regex::REGEX_MACRO,
 759         regex::TRIVIAL_REGEX,
 760         returns::LET_AND_RETURN,
 761         returns::NEEDLESS_RETURN,
 762         strings::STRING_LIT_AS_BYTES,
 763         types::FN_TO_NUMERIC_CAST,
 764         types::IMPLICIT_HASHER,
 765         types::LET_UNIT_VALUE,
 766         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 767         write::PRINT_LITERAL,
 768         write::PRINT_WITH_NEWLINE,
 769         write::PRINTLN_EMPTY_STRING,
 770         write::WRITE_LITERAL,
 771         write::WRITE_WITH_NEWLINE,
 772         write::WRITELN_EMPTY_STRING,
 773     ]);
 774
 775     reg.register_lint_group("clippy_complexity", vec![
 776         assign_ops::MISREFACTORED_ASSIGN_OP,
 777         booleans::NONMINIMAL_BOOL,
 778         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 779         double_comparison::DOUBLE_COMPARISONS,
 780         double_parens::DOUBLE_PARENS,
 781         duration_subsec::DURATION_SUBSEC,
 782         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 783         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 784         explicit_write::EXPLICIT_WRITE,
 785         format::USELESS_FORMAT,
 786         functions::TOO_MANY_ARGUMENTS,
 787         identity_conversion::IDENTITY_CONVERSION,
 788         identity_op::IDENTITY_OP,
 789         int_plus_one::INT_PLUS_ONE,
 790         lifetimes::EXTRA_UNUSED_LIFETIMES,
 791         lifetimes::NEEDLESS_LIFETIMES,
 792         loops::EXPLICIT_COUNTER_LOOP,
 793         loops::MUT_RANGE_BOUND,
 794         loops::WHILE_LET_LOOP,
 795         map_unit_fn::OPTION_MAP_UNIT_FN,
 796         map_unit_fn::RESULT_MAP_UNIT_FN,
 797         matches::MATCH_AS_REF,
 798         methods::CHARS_NEXT_CMP,
 799         methods::CLONE_ON_COPY,
 800         methods::FILTER_NEXT,
 801         methods::SEARCH_IS_SOME,
 802         methods::USELESS_ASREF,
 803         misc::SHORT_CIRCUIT_STATEMENT,
 804         misc_early::REDUNDANT_CLOSURE_CALL,
 805         misc_early::ZERO_PREFIXED_LITERAL,
 806         needless_bool::BOOL_COMPARISON,
 807         needless_bool::NEEDLESS_BOOL,
 808         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 809         needless_update::NEEDLESS_UPDATE,
 810         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 811         no_effect::NO_EFFECT,
 812         no_effect::UNNECESSARY_OPERATION,
 813         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 814         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 815         precedence::PRECEDENCE,
 816         ranges::RANGE_ZIP_WITH_LEN,
 817         reference::DEREF_ADDROF,
 818         reference::REF_IN_DEREF,
 819         swap::MANUAL_SWAP,
 820         temporary_assignment::TEMPORARY_ASSIGNMENT,
 821         transmute::CROSSPOINTER_TRANSMUTE,
 822         transmute::TRANSMUTE_BYTES_TO_STR,
 823         transmute::TRANSMUTE_INT_TO_BOOL,
 824         transmute::TRANSMUTE_INT_TO_CHAR,
 825         transmute::TRANSMUTE_INT_TO_FLOAT,
 826         transmute::TRANSMUTE_PTR_TO_PTR,
 827         transmute::TRANSMUTE_PTR_TO_REF,
 828         transmute::USELESS_TRANSMUTE,
 829         types::BORROWED_BOX,
 830         types::CAST_LOSSLESS,
 831         types::CHAR_LIT_AS_U8,
 832         types::OPTION_OPTION,
 833         types::TYPE_COMPLEXITY,
 834         types::UNIT_ARG,
 835         types::UNNECESSARY_CAST,
 836         unused_label::UNUSED_LABEL,
 837         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 838     ]);
 839
 840     reg.register_lint_group("clippy_correctness", vec![
 841         approx_const::APPROX_CONSTANT,
 842         attrs::DEPRECATED_SEMVER,
 843         attrs::USELESS_ATTRIBUTE,
 844         bit_mask::BAD_BIT_MASK,
 845         bit_mask::INEFFECTIVE_BIT_MASK,
 846         booleans::LOGIC_BUG,
 847         copies::IF_SAME_THEN_ELSE,
 848         copies::IFS_SAME_COND,
 849         derive::DERIVE_HASH_XOR_EQ,
 850         drop_forget_ref::DROP_COPY,
 851         drop_forget_ref::DROP_REF,
 852         drop_forget_ref::FORGET_COPY,
 853         drop_forget_ref::FORGET_REF,
 854         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 855         eq_op::EQ_OP,
 856         erasing_op::ERASING_OP,
 857         formatting::POSSIBLE_MISSING_COMMA,
 858         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 859         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 860         infinite_iter::INFINITE_ITER,
 861         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 862         invalid_ref::INVALID_REF,
 863         loops::FOR_LOOP_OVER_OPTION,
 864         loops::FOR_LOOP_OVER_RESULT,
 865         loops::ITER_NEXT_LOOP,
 866         loops::NEVER_LOOP,
 867         loops::REVERSE_RANGE_LOOP,
 868         loops::WHILE_IMMUTABLE_CONDITION,
 869         methods::CLONE_DOUBLE_REF,
 870         methods::TEMPORARY_CSTRING_AS_PTR,
 871         minmax::MIN_MAX,
 872         misc::CMP_NAN,
 873         misc::FLOAT_CMP,
 874         misc::MODULO_ONE,
 875         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 876         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 877         open_options::NONSENSICAL_OPEN_OPTIONS,
 878         ptr::MUT_FROM_REF,
 879         ranges::ITERATOR_STEP_BY_ZERO,
 880         regex::INVALID_REGEX,
 881         serde_api::SERDE_API_MISUSE,
 882         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 883         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 884         swap::ALMOST_SWAPPED,
 885         transmute::WRONG_TRANSMUTE,
 886         types::ABSURD_EXTREME_COMPARISONS,
 887         types::CAST_PTR_ALIGNMENT,
 888         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 889         types::UNIT_CMP,
 890         unicode::ZERO_WIDTH_SPACE,
 891         unused_io_amount::UNUSED_IO_AMOUNT,
 892     ]);
 893
 894     reg.register_lint_group("clippy_perf", vec![
 895         bytecount::NAIVE_BYTECOUNT,
 896         entry::MAP_ENTRY,
 897         escape::BOXED_LOCAL,
 898         large_enum_variant::LARGE_ENUM_VARIANT,
 899         loops::MANUAL_MEMCPY,
 900         loops::UNUSED_COLLECT,
 901         methods::EXPECT_FUN_CALL,
 902         methods::ITER_NTH,
 903         methods::OR_FUN_CALL,
 904         methods::SINGLE_CHAR_PATTERN,
 905         misc::CMP_OWNED,
 906         mutex_atomic::MUTEX_ATOMIC,
 907         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 908         types::BOX_VEC,
 909         vec::USELESS_VEC,
 910     ]);
 911
 912     reg.register_lint_group("clippy_cargo", vec![
 913         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 914     ]);
 915
 916     reg.register_lint_group("clippy_nursery", vec![
 917         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 918         fallible_impl_from::FALLIBLE_IMPL_FROM,
 919         mutex_atomic::MUTEX_INTEGER,
 920         needless_borrow::NEEDLESS_BORROW,
 921         ranges::RANGE_PLUS_ONE,
 922         unwrap::PANICKING_UNWRAP,
 923         unwrap::UNNECESSARY_UNWRAP,
 924     ]);
 925 }
 926
 927 // only exists to let the dogfood integration test works.
 928 // Don't run clippy as an executable directly
 929 #[allow(dead_code, print_stdout)]
 930 fn main() {
 931     panic!("Please use the cargo-clippy executable");
 932 }