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(rust_2018_preview)]
  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 mod reexport {
 176     crate use syntax::ast::{Name, NodeId};
 177 }
 178
 179 pub fn register_pre_expansion_lints(session: &rustc::session::Session, store: &mut rustc::lint::LintStore) {
 180     store.register_pre_expansion_pass(Some(session), box write::Pass);
 181 }
 182
 183 #[cfg_attr(rustfmt, rustfmt_skip)]
 184 pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>) {
 185     let conf = match utils::conf::file_from_args(reg.args()) {
 186         Ok(file_name) => {
 187             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 188             // do not require the file to exist
 189             let file_name = if let Some(file_name) = file_name {
 190                 Some(file_name)
 191             } else {
 192                 match utils::conf::lookup_conf_file() {
 193                     Ok(path) => path,
 194                     Err(error) => {
 195                         reg.sess.struct_err(&format!("error finding Clippy's configuration file: {}", error)).emit();
 196                         None
 197                     }
 198                 }
 199             };
 200
 201             let file_name = file_name.map(|file_name| if file_name.is_relative() {
 202                 reg.sess
 203                     .local_crate_source_file
 204                     .as_ref()
 205                     .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 206                     .unwrap_or_default()
 207                     .join(file_name)
 208             } else {
 209                 file_name
 210             });
 211
 212             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 213
 214             // all conf errors are non-fatal, we just use the default conf in case of error
 215             for error in errors {
 216                 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();
 217             }
 218
 219             conf
 220         }
 221         Err((err, span)) => {
 222             reg.sess.struct_span_err(span, err)
 223                     .span_note(span, "Clippy will use default configuration")
 224                     .emit();
 225             toml::from_str("").expect("we never error on empty config files")
 226         }
 227     };
 228
 229     let mut store = reg.sess.lint_store.borrow_mut();
 230     store.register_removed(
 231         "should_assert_eq",
 232         "`assert!()` will be more flexible with RFC 2011",
 233     );
 234     store.register_removed(
 235         "extend_from_slice",
 236         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 237     );
 238     store.register_removed(
 239         "range_step_by_zero",
 240         "`iterator.step_by(0)` panics nowadays",
 241     );
 242     store.register_removed(
 243         "unstable_as_slice",
 244         "`Vec::as_slice` has been stabilized in 1.7",
 245     );
 246     store.register_removed(
 247         "unstable_as_mut_slice",
 248         "`Vec::as_mut_slice` has been stabilized in 1.7",
 249     );
 250     store.register_removed(
 251         "str_to_string",
 252         "using `str::to_string` is common even today and specialization will likely happen soon",
 253     );
 254     store.register_removed(
 255         "string_to_string",
 256         "using `string::to_string` is common even today and specialization will likely happen soon",
 257     );
 258     store.register_removed(
 259         "misaligned_transmute",
 260         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 261     );
 262     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 263
 264     reg.register_late_lint_pass(box serde_api::Serde);
 265     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 266     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 267     reg.register_late_lint_pass(box utils::inspector::Pass);
 268     reg.register_late_lint_pass(box utils::author::Pass);
 269     reg.register_late_lint_pass(box types::TypePass);
 270     reg.register_late_lint_pass(box booleans::NonminimalBool);
 271     reg.register_late_lint_pass(box eq_op::EqOp);
 272     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 273     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 274     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 275     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 276     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 277     reg.register_late_lint_pass(box ptr::PointerPass);
 278     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 279     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 280     reg.register_late_lint_pass(box approx_const::Pass);
 281     reg.register_late_lint_pass(box misc::Pass);
 282     reg.register_early_lint_pass(box precedence::Precedence);
 283     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 284     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 285     reg.register_late_lint_pass(box identity_op::IdentityOp);
 286     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 287     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 288     reg.register_late_lint_pass(box mut_mut::MutMut);
 289     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 290     reg.register_late_lint_pass(box len_zero::LenZero);
 291     reg.register_late_lint_pass(box attrs::AttrPass);
 292     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 293     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 294     reg.register_late_lint_pass(box unicode::Unicode);
 295     reg.register_late_lint_pass(box strings::StringAdd);
 296     reg.register_early_lint_pass(box returns::ReturnPass);
 297     reg.register_late_lint_pass(box methods::Pass);
 298     reg.register_late_lint_pass(box shadow::Pass);
 299     reg.register_late_lint_pass(box types::LetPass);
 300     reg.register_late_lint_pass(box types::UnitCmp);
 301     reg.register_late_lint_pass(box loops::Pass);
 302     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 303     reg.register_late_lint_pass(box entry::HashMapLint);
 304     reg.register_late_lint_pass(box ranges::Pass);
 305     reg.register_late_lint_pass(box types::CastPass);
 306     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 307     reg.register_late_lint_pass(box matches::MatchPass);
 308     reg.register_late_lint_pass(box minmax::MinMaxPass);
 309     reg.register_late_lint_pass(box open_options::NonSensical);
 310     reg.register_late_lint_pass(box zero_div_zero::Pass);
 311     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 312     reg.register_late_lint_pass(box needless_update::Pass);
 313     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 314     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 315     reg.register_late_lint_pass(box no_effect::Pass);
 316     reg.register_late_lint_pass(box map_clone::Pass);
 317     reg.register_late_lint_pass(box temporary_assignment::Pass);
 318     reg.register_late_lint_pass(box transmute::Transmute);
 319     reg.register_late_lint_pass(
 320         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 321     );
 322     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 323     reg.register_early_lint_pass(box misc_early::MiscEarly);
 324     reg.register_late_lint_pass(box panic_unimplemented::Pass);
 325     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 326     reg.register_late_lint_pass(box derive::Derive);
 327     reg.register_late_lint_pass(box types::CharLitAsU8);
 328     reg.register_late_lint_pass(box vec::Pass);
 329     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 330         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 331     });
 332     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 333     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 334     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 335     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 336     reg.register_late_lint_pass(box regex::Pass::default());
 337     reg.register_late_lint_pass(box copies::CopyAndPaste);
 338     reg.register_late_lint_pass(box format::Pass);
 339     reg.register_early_lint_pass(box formatting::Formatting);
 340     reg.register_late_lint_pass(box swap::Swap);
 341     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 342     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 343     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 344     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 345     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 346     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 347     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 348     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 349     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 350     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 351     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 352     reg.register_late_lint_pass(box mem_forget::MemForget);
 353     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 354     reg.register_late_lint_pass(box assign_ops::AssignOps);
 355     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 356     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 357     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 358     reg.register_late_lint_pass(box missing_inline::MissingInline);
 359     reg.register_late_lint_pass(box ok_if_let::Pass);
 360     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 361     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 362     reg.register_early_lint_pass(box reference::Pass);
 363     reg.register_early_lint_pass(box reference::DerefPass);
 364     reg.register_early_lint_pass(box double_parens::DoubleParens);
 365     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 366     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 367     reg.register_late_lint_pass(box explicit_write::Pass);
 368     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 369     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 370             conf.trivial_copy_size_limit,
 371             &reg.sess.target,
 372     ));
 373     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 374     reg.register_early_lint_pass(box literal_representation::LiteralRepresentation::new(
 375             conf.literal_representation_threshold
 376     ));
 377     reg.register_late_lint_pass(box use_self::UseSelf);
 378     reg.register_late_lint_pass(box bytecount::ByteCount);
 379     reg.register_late_lint_pass(box infinite_iter::Pass);
 380     reg.register_late_lint_pass(box inline_fn_without_body::Pass);
 381     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 382     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 383     reg.register_late_lint_pass(box types::ImplicitHasher);
 384     reg.register_early_lint_pass(box const_static_lifetime::StaticConst);
 385     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 386     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 387     reg.register_late_lint_pass(box types::UnitArg);
 388     reg.register_late_lint_pass(box double_comparison::DoubleComparisonPass);
 389     reg.register_late_lint_pass(box question_mark::QuestionMarkPass);
 390     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 391     reg.register_late_lint_pass(box redundant_field_names::RedundantFieldNames);
 392     reg.register_early_lint_pass(box multiple_crate_versions::Pass);
 393     reg.register_late_lint_pass(box map_unit_fn::Pass);
 394     reg.register_late_lint_pass(box infallible_destructuring_match::Pass);
 395     reg.register_late_lint_pass(box inherent_impl::Pass::default());
 396     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 397     reg.register_late_lint_pass(box unwrap::Pass);
 398     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 399     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 400     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 401     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 402
 403     reg.register_lint_group("clippy_restriction", vec![
 404         arithmetic::FLOAT_ARITHMETIC,
 405         arithmetic::INTEGER_ARITHMETIC,
 406         assign_ops::ASSIGN_OPS,
 407         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 408         inherent_impl::MULTIPLE_INHERENT_IMPL,
 409         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 410         mem_forget::MEM_FORGET,
 411         methods::CLONE_ON_REF_PTR,
 412         methods::OPTION_UNWRAP_USED,
 413         methods::RESULT_UNWRAP_USED,
 414         methods::WRONG_PUB_SELF_CONVENTION,
 415         misc::FLOAT_CMP_CONST,
 416         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 417         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 418         panic_unimplemented::UNIMPLEMENTED,
 419         shadow::SHADOW_REUSE,
 420         shadow::SHADOW_SAME,
 421         shadow::SHADOW_UNRELATED,
 422         strings::STRING_ADD,
 423         write::PRINT_STDOUT,
 424         write::USE_DEBUG,
 425     ]);
 426
 427     reg.register_lint_group("clippy_pedantic", vec![
 428         attrs::INLINE_ALWAYS,
 429         copies::MATCH_SAME_ARMS,
 430         default_trait_access::DEFAULT_TRAIT_ACCESS,
 431         derive::EXPL_IMPL_CLONE_ON_COPY,
 432         doc::DOC_MARKDOWN,
 433         empty_enum::EMPTY_ENUM,
 434         enum_glob_use::ENUM_GLOB_USE,
 435         enum_variants::PUB_ENUM_VARIANT_NAMES,
 436         enum_variants::STUTTER,
 437         if_not_else::IF_NOT_ELSE,
 438         indexing_slicing::INDEXING_SLICING,
 439         infinite_iter::MAYBE_INFINITE_ITER,
 440         items_after_statements::ITEMS_AFTER_STATEMENTS,
 441         matches::SINGLE_MATCH_ELSE,
 442         methods::FILTER_MAP,
 443         methods::OPTION_MAP_UNWRAP_OR,
 444         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 445         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 446         misc::USED_UNDERSCORE_BINDING,
 447         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 448         mut_mut::MUT_MUT,
 449         needless_continue::NEEDLESS_CONTINUE,
 450         non_expressive_names::SIMILAR_NAMES,
 451         replace_consts::REPLACE_CONSTS,
 452         strings::STRING_ADD_ASSIGN,
 453         types::CAST_POSSIBLE_TRUNCATION,
 454         types::CAST_POSSIBLE_WRAP,
 455         types::CAST_PRECISION_LOSS,
 456         types::CAST_SIGN_LOSS,
 457         types::INVALID_UPCAST_COMPARISONS,
 458         types::LINKEDLIST,
 459         unicode::NON_ASCII_LITERAL,
 460         unicode::UNICODE_NOT_NFC,
 461         use_self::USE_SELF,
 462     ]);
 463
 464     reg.register_lint_group("clippy_internal", vec![
 465         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 466         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 467     ]);
 468
 469     reg.register_lint_group("clippy", vec![
 470         approx_const::APPROX_CONSTANT,
 471         assign_ops::ASSIGN_OP_PATTERN,
 472         assign_ops::MISREFACTORED_ASSIGN_OP,
 473         attrs::DEPRECATED_SEMVER,
 474         attrs::USELESS_ATTRIBUTE,
 475         bit_mask::BAD_BIT_MASK,
 476         bit_mask::INEFFECTIVE_BIT_MASK,
 477         bit_mask::VERBOSE_BIT_MASK,
 478         blacklisted_name::BLACKLISTED_NAME,
 479         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 480         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 481         booleans::LOGIC_BUG,
 482         booleans::NONMINIMAL_BOOL,
 483         bytecount::NAIVE_BYTECOUNT,
 484         collapsible_if::COLLAPSIBLE_IF,
 485         const_static_lifetime::CONST_STATIC_LIFETIME,
 486         copies::IF_SAME_THEN_ELSE,
 487         copies::IFS_SAME_COND,
 488         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 489         derive::DERIVE_HASH_XOR_EQ,
 490         double_comparison::DOUBLE_COMPARISONS,
 491         double_parens::DOUBLE_PARENS,
 492         drop_forget_ref::DROP_COPY,
 493         drop_forget_ref::DROP_REF,
 494         drop_forget_ref::FORGET_COPY,
 495         drop_forget_ref::FORGET_REF,
 496         duration_subsec::DURATION_SUBSEC,
 497         entry::MAP_ENTRY,
 498         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 499         enum_variants::ENUM_VARIANT_NAMES,
 500         enum_variants::MODULE_INCEPTION,
 501         eq_op::EQ_OP,
 502         eq_op::OP_REF,
 503         erasing_op::ERASING_OP,
 504         escape::BOXED_LOCAL,
 505         eta_reduction::REDUNDANT_CLOSURE,
 506         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 507         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 508         excessive_precision::EXCESSIVE_PRECISION,
 509         explicit_write::EXPLICIT_WRITE,
 510         format::USELESS_FORMAT,
 511         formatting::POSSIBLE_MISSING_COMMA,
 512         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 513         formatting::SUSPICIOUS_ELSE_FORMATTING,
 514         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 515         functions::TOO_MANY_ARGUMENTS,
 516         identity_conversion::IDENTITY_CONVERSION,
 517         identity_op::IDENTITY_OP,
 518         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 519         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 520         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 521         infinite_iter::INFINITE_ITER,
 522         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 523         int_plus_one::INT_PLUS_ONE,
 524         invalid_ref::INVALID_REF,
 525         large_enum_variant::LARGE_ENUM_VARIANT,
 526         len_zero::LEN_WITHOUT_IS_EMPTY,
 527         len_zero::LEN_ZERO,
 528         let_if_seq::USELESS_LET_IF_SEQ,
 529         lifetimes::EXTRA_UNUSED_LIFETIMES,
 530         lifetimes::NEEDLESS_LIFETIMES,
 531         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 532         literal_representation::LARGE_DIGIT_GROUPS,
 533         literal_representation::UNREADABLE_LITERAL,
 534         loops::EMPTY_LOOP,
 535         loops::EXPLICIT_COUNTER_LOOP,
 536         loops::EXPLICIT_INTO_ITER_LOOP,
 537         loops::EXPLICIT_ITER_LOOP,
 538         loops::FOR_KV_MAP,
 539         loops::FOR_LOOP_OVER_OPTION,
 540         loops::FOR_LOOP_OVER_RESULT,
 541         loops::ITER_NEXT_LOOP,
 542         loops::MANUAL_MEMCPY,
 543         loops::MUT_RANGE_BOUND,
 544         loops::NEEDLESS_RANGE_LOOP,
 545         loops::NEVER_LOOP,
 546         loops::REVERSE_RANGE_LOOP,
 547         loops::UNUSED_COLLECT,
 548         loops::WHILE_IMMUTABLE_CONDITION,
 549         loops::WHILE_LET_LOOP,
 550         loops::WHILE_LET_ON_ITERATOR,
 551         map_clone::MAP_CLONE,
 552         map_unit_fn::OPTION_MAP_UNIT_FN,
 553         map_unit_fn::RESULT_MAP_UNIT_FN,
 554         matches::MATCH_AS_REF,
 555         matches::MATCH_BOOL,
 556         matches::MATCH_OVERLAPPING_ARM,
 557         matches::MATCH_REF_PATS,
 558         matches::MATCH_WILD_ERR_ARM,
 559         matches::SINGLE_MATCH,
 560         methods::CHARS_LAST_CMP,
 561         methods::CHARS_NEXT_CMP,
 562         methods::CLONE_DOUBLE_REF,
 563         methods::CLONE_ON_COPY,
 564         methods::EXPECT_FUN_CALL,
 565         methods::FILTER_NEXT,
 566         methods::GET_UNWRAP,
 567         methods::ITER_CLONED_COLLECT,
 568         methods::ITER_NTH,
 569         methods::ITER_SKIP_NEXT,
 570         methods::NEW_RET_NO_SELF,
 571         methods::OK_EXPECT,
 572         methods::OPTION_MAP_OR_NONE,
 573         methods::OR_FUN_CALL,
 574         methods::SEARCH_IS_SOME,
 575         methods::SHOULD_IMPLEMENT_TRAIT,
 576         methods::SINGLE_CHAR_PATTERN,
 577         methods::STRING_EXTEND_CHARS,
 578         methods::TEMPORARY_CSTRING_AS_PTR,
 579         methods::UNNECESSARY_FOLD,
 580         methods::USELESS_ASREF,
 581         methods::WRONG_SELF_CONVENTION,
 582         minmax::MIN_MAX,
 583         misc::CMP_NAN,
 584         misc::CMP_OWNED,
 585         misc::FLOAT_CMP,
 586         misc::MODULO_ONE,
 587         misc::REDUNDANT_PATTERN,
 588         misc::SHORT_CIRCUIT_STATEMENT,
 589         misc::TOPLEVEL_REF_ARG,
 590         misc::ZERO_PTR,
 591         misc_early::BUILTIN_TYPE_SHADOW,
 592         misc_early::DOUBLE_NEG,
 593         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 594         misc_early::MIXED_CASE_HEX_LITERALS,
 595         misc_early::REDUNDANT_CLOSURE_CALL,
 596         misc_early::UNNEEDED_FIELD_PATTERN,
 597         misc_early::ZERO_PREFIXED_LITERAL,
 598         mut_reference::UNNECESSARY_MUT_PASSED,
 599         mutex_atomic::MUTEX_ATOMIC,
 600         needless_bool::BOOL_COMPARISON,
 601         needless_bool::NEEDLESS_BOOL,
 602         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 603         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 604         needless_update::NEEDLESS_UPDATE,
 605         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 606         neg_multiply::NEG_MULTIPLY,
 607         new_without_default::NEW_WITHOUT_DEFAULT,
 608         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 609         no_effect::NO_EFFECT,
 610         no_effect::UNNECESSARY_OPERATION,
 611         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 612         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 613         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 614         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 615         ok_if_let::IF_LET_SOME_RESULT,
 616         open_options::NONSENSICAL_OPEN_OPTIONS,
 617         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 618         panic_unimplemented::PANIC_PARAMS,
 619         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 620         precedence::PRECEDENCE,
 621         ptr::CMP_NULL,
 622         ptr::MUT_FROM_REF,
 623         ptr::PTR_ARG,
 624         question_mark::QUESTION_MARK,
 625         ranges::ITERATOR_STEP_BY_ZERO,
 626         ranges::RANGE_MINUS_ONE,
 627         ranges::RANGE_ZIP_WITH_LEN,
 628         redundant_field_names::REDUNDANT_FIELD_NAMES,
 629         reference::DEREF_ADDROF,
 630         reference::REF_IN_DEREF,
 631         regex::INVALID_REGEX,
 632         regex::REGEX_MACRO,
 633         regex::TRIVIAL_REGEX,
 634         returns::LET_AND_RETURN,
 635         returns::NEEDLESS_RETURN,
 636         serde_api::SERDE_API_MISUSE,
 637         strings::STRING_LIT_AS_BYTES,
 638         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 639         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 640         swap::ALMOST_SWAPPED,
 641         swap::MANUAL_SWAP,
 642         temporary_assignment::TEMPORARY_ASSIGNMENT,
 643         transmute::CROSSPOINTER_TRANSMUTE,
 644         transmute::TRANSMUTE_BYTES_TO_STR,
 645         transmute::TRANSMUTE_INT_TO_BOOL,
 646         transmute::TRANSMUTE_INT_TO_CHAR,
 647         transmute::TRANSMUTE_INT_TO_FLOAT,
 648         transmute::TRANSMUTE_PTR_TO_PTR,
 649         transmute::TRANSMUTE_PTR_TO_REF,
 650         transmute::USELESS_TRANSMUTE,
 651         transmute::WRONG_TRANSMUTE,
 652         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 653         types::ABSURD_EXTREME_COMPARISONS,
 654         types::BORROWED_BOX,
 655         types::BOX_VEC,
 656         types::CAST_LOSSLESS,
 657         types::CAST_PTR_ALIGNMENT,
 658         types::CHAR_LIT_AS_U8,
 659         types::FN_TO_NUMERIC_CAST,
 660         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 661         types::IMPLICIT_HASHER,
 662         types::LET_UNIT_VALUE,
 663         types::OPTION_OPTION,
 664         types::TYPE_COMPLEXITY,
 665         types::UNIT_ARG,
 666         types::UNIT_CMP,
 667         types::UNNECESSARY_CAST,
 668         unicode::ZERO_WIDTH_SPACE,
 669         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 670         unused_io_amount::UNUSED_IO_AMOUNT,
 671         unused_label::UNUSED_LABEL,
 672         vec::USELESS_VEC,
 673         write::PRINT_LITERAL,
 674         write::PRINT_WITH_NEWLINE,
 675         write::PRINTLN_EMPTY_STRING,
 676         write::WRITE_LITERAL,
 677         write::WRITE_WITH_NEWLINE,
 678         write::WRITELN_EMPTY_STRING,
 679         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 680     ]);
 681
 682     reg.register_lint_group("clippy_style", vec![
 683         assign_ops::ASSIGN_OP_PATTERN,
 684         bit_mask::VERBOSE_BIT_MASK,
 685         blacklisted_name::BLACKLISTED_NAME,
 686         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 687         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 688         collapsible_if::COLLAPSIBLE_IF,
 689         const_static_lifetime::CONST_STATIC_LIFETIME,
 690         enum_variants::ENUM_VARIANT_NAMES,
 691         enum_variants::MODULE_INCEPTION,
 692         eq_op::OP_REF,
 693         eta_reduction::REDUNDANT_CLOSURE,
 694         excessive_precision::EXCESSIVE_PRECISION,
 695         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 696         formatting::SUSPICIOUS_ELSE_FORMATTING,
 697         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 698         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 699         len_zero::LEN_WITHOUT_IS_EMPTY,
 700         len_zero::LEN_ZERO,
 701         let_if_seq::USELESS_LET_IF_SEQ,
 702         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 703         literal_representation::LARGE_DIGIT_GROUPS,
 704         literal_representation::UNREADABLE_LITERAL,
 705         loops::EMPTY_LOOP,
 706         loops::EXPLICIT_INTO_ITER_LOOP,
 707         loops::EXPLICIT_ITER_LOOP,
 708         loops::FOR_KV_MAP,
 709         loops::NEEDLESS_RANGE_LOOP,
 710         loops::WHILE_LET_ON_ITERATOR,
 711         map_clone::MAP_CLONE,
 712         matches::MATCH_BOOL,
 713         matches::MATCH_OVERLAPPING_ARM,
 714         matches::MATCH_REF_PATS,
 715         matches::MATCH_WILD_ERR_ARM,
 716         matches::SINGLE_MATCH,
 717         methods::CHARS_LAST_CMP,
 718         methods::GET_UNWRAP,
 719         methods::ITER_CLONED_COLLECT,
 720         methods::ITER_SKIP_NEXT,
 721         methods::NEW_RET_NO_SELF,
 722         methods::OK_EXPECT,
 723         methods::OPTION_MAP_OR_NONE,
 724         methods::SHOULD_IMPLEMENT_TRAIT,
 725         methods::STRING_EXTEND_CHARS,
 726         methods::UNNECESSARY_FOLD,
 727         methods::WRONG_SELF_CONVENTION,
 728         misc::REDUNDANT_PATTERN,
 729         misc::TOPLEVEL_REF_ARG,
 730         misc::ZERO_PTR,
 731         misc_early::BUILTIN_TYPE_SHADOW,
 732         misc_early::DOUBLE_NEG,
 733         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 734         misc_early::MIXED_CASE_HEX_LITERALS,
 735         misc_early::UNNEEDED_FIELD_PATTERN,
 736         mut_reference::UNNECESSARY_MUT_PASSED,
 737         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 738         neg_multiply::NEG_MULTIPLY,
 739         new_without_default::NEW_WITHOUT_DEFAULT,
 740         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 741         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 742         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 743         ok_if_let::IF_LET_SOME_RESULT,
 744         panic_unimplemented::PANIC_PARAMS,
 745         ptr::CMP_NULL,
 746         ptr::PTR_ARG,
 747         question_mark::QUESTION_MARK,
 748         ranges::RANGE_MINUS_ONE,
 749         redundant_field_names::REDUNDANT_FIELD_NAMES,
 750         regex::REGEX_MACRO,
 751         regex::TRIVIAL_REGEX,
 752         returns::LET_AND_RETURN,
 753         returns::NEEDLESS_RETURN,
 754         strings::STRING_LIT_AS_BYTES,
 755         types::FN_TO_NUMERIC_CAST,
 756         types::IMPLICIT_HASHER,
 757         types::LET_UNIT_VALUE,
 758         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 759         write::PRINT_LITERAL,
 760         write::PRINT_WITH_NEWLINE,
 761         write::PRINTLN_EMPTY_STRING,
 762         write::WRITE_LITERAL,
 763         write::WRITE_WITH_NEWLINE,
 764         write::WRITELN_EMPTY_STRING,
 765     ]);
 766
 767     reg.register_lint_group("clippy_complexity", vec![
 768         assign_ops::MISREFACTORED_ASSIGN_OP,
 769         booleans::NONMINIMAL_BOOL,
 770         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 771         double_comparison::DOUBLE_COMPARISONS,
 772         double_parens::DOUBLE_PARENS,
 773         duration_subsec::DURATION_SUBSEC,
 774         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 775         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 776         explicit_write::EXPLICIT_WRITE,
 777         format::USELESS_FORMAT,
 778         functions::TOO_MANY_ARGUMENTS,
 779         identity_conversion::IDENTITY_CONVERSION,
 780         identity_op::IDENTITY_OP,
 781         int_plus_one::INT_PLUS_ONE,
 782         lifetimes::EXTRA_UNUSED_LIFETIMES,
 783         lifetimes::NEEDLESS_LIFETIMES,
 784         loops::EXPLICIT_COUNTER_LOOP,
 785         loops::MUT_RANGE_BOUND,
 786         loops::WHILE_LET_LOOP,
 787         map_unit_fn::OPTION_MAP_UNIT_FN,
 788         map_unit_fn::RESULT_MAP_UNIT_FN,
 789         matches::MATCH_AS_REF,
 790         methods::CHARS_NEXT_CMP,
 791         methods::CLONE_ON_COPY,
 792         methods::FILTER_NEXT,
 793         methods::SEARCH_IS_SOME,
 794         methods::USELESS_ASREF,
 795         misc::SHORT_CIRCUIT_STATEMENT,
 796         misc_early::REDUNDANT_CLOSURE_CALL,
 797         misc_early::ZERO_PREFIXED_LITERAL,
 798         needless_bool::BOOL_COMPARISON,
 799         needless_bool::NEEDLESS_BOOL,
 800         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 801         needless_update::NEEDLESS_UPDATE,
 802         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 803         no_effect::NO_EFFECT,
 804         no_effect::UNNECESSARY_OPERATION,
 805         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 806         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 807         precedence::PRECEDENCE,
 808         ranges::RANGE_ZIP_WITH_LEN,
 809         reference::DEREF_ADDROF,
 810         reference::REF_IN_DEREF,
 811         swap::MANUAL_SWAP,
 812         temporary_assignment::TEMPORARY_ASSIGNMENT,
 813         transmute::CROSSPOINTER_TRANSMUTE,
 814         transmute::TRANSMUTE_BYTES_TO_STR,
 815         transmute::TRANSMUTE_INT_TO_BOOL,
 816         transmute::TRANSMUTE_INT_TO_CHAR,
 817         transmute::TRANSMUTE_INT_TO_FLOAT,
 818         transmute::TRANSMUTE_PTR_TO_PTR,
 819         transmute::TRANSMUTE_PTR_TO_REF,
 820         transmute::USELESS_TRANSMUTE,
 821         types::BORROWED_BOX,
 822         types::CAST_LOSSLESS,
 823         types::CHAR_LIT_AS_U8,
 824         types::OPTION_OPTION,
 825         types::TYPE_COMPLEXITY,
 826         types::UNIT_ARG,
 827         types::UNNECESSARY_CAST,
 828         unused_label::UNUSED_LABEL,
 829         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 830     ]);
 831
 832     reg.register_lint_group("clippy_correctness", vec![
 833         approx_const::APPROX_CONSTANT,
 834         attrs::DEPRECATED_SEMVER,
 835         attrs::USELESS_ATTRIBUTE,
 836         bit_mask::BAD_BIT_MASK,
 837         bit_mask::INEFFECTIVE_BIT_MASK,
 838         booleans::LOGIC_BUG,
 839         copies::IF_SAME_THEN_ELSE,
 840         copies::IFS_SAME_COND,
 841         derive::DERIVE_HASH_XOR_EQ,
 842         drop_forget_ref::DROP_COPY,
 843         drop_forget_ref::DROP_REF,
 844         drop_forget_ref::FORGET_COPY,
 845         drop_forget_ref::FORGET_REF,
 846         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 847         eq_op::EQ_OP,
 848         erasing_op::ERASING_OP,
 849         formatting::POSSIBLE_MISSING_COMMA,
 850         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 851         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 852         infinite_iter::INFINITE_ITER,
 853         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 854         invalid_ref::INVALID_REF,
 855         loops::FOR_LOOP_OVER_OPTION,
 856         loops::FOR_LOOP_OVER_RESULT,
 857         loops::ITER_NEXT_LOOP,
 858         loops::NEVER_LOOP,
 859         loops::REVERSE_RANGE_LOOP,
 860         loops::WHILE_IMMUTABLE_CONDITION,
 861         methods::CLONE_DOUBLE_REF,
 862         methods::TEMPORARY_CSTRING_AS_PTR,
 863         minmax::MIN_MAX,
 864         misc::CMP_NAN,
 865         misc::FLOAT_CMP,
 866         misc::MODULO_ONE,
 867         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 868         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 869         open_options::NONSENSICAL_OPEN_OPTIONS,
 870         ptr::MUT_FROM_REF,
 871         ranges::ITERATOR_STEP_BY_ZERO,
 872         regex::INVALID_REGEX,
 873         serde_api::SERDE_API_MISUSE,
 874         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 875         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 876         swap::ALMOST_SWAPPED,
 877         transmute::WRONG_TRANSMUTE,
 878         types::ABSURD_EXTREME_COMPARISONS,
 879         types::CAST_PTR_ALIGNMENT,
 880         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 881         types::UNIT_CMP,
 882         unicode::ZERO_WIDTH_SPACE,
 883         unused_io_amount::UNUSED_IO_AMOUNT,
 884     ]);
 885
 886     reg.register_lint_group("clippy_perf", vec![
 887         bytecount::NAIVE_BYTECOUNT,
 888         entry::MAP_ENTRY,
 889         escape::BOXED_LOCAL,
 890         large_enum_variant::LARGE_ENUM_VARIANT,
 891         loops::MANUAL_MEMCPY,
 892         loops::UNUSED_COLLECT,
 893         methods::EXPECT_FUN_CALL,
 894         methods::ITER_NTH,
 895         methods::OR_FUN_CALL,
 896         methods::SINGLE_CHAR_PATTERN,
 897         misc::CMP_OWNED,
 898         mutex_atomic::MUTEX_ATOMIC,
 899         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 900         types::BOX_VEC,
 901         vec::USELESS_VEC,
 902     ]);
 903
 904     reg.register_lint_group("clippy_cargo", vec![
 905         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
 906     ]);
 907
 908     reg.register_lint_group("clippy_nursery", vec![
 909         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
 910         fallible_impl_from::FALLIBLE_IMPL_FROM,
 911         mutex_atomic::MUTEX_INTEGER,
 912         needless_borrow::NEEDLESS_BORROW,
 913         ranges::RANGE_PLUS_ONE,
 914         unwrap::PANICKING_UNWRAP,
 915         unwrap::UNNECESSARY_UNWRAP,
 916     ]);
 917 }
 918
 919 // only exists to let the dogfood integration test works.
 920 // Don't run clippy as an executable directly
 921 #[allow(dead_code, print_stdout)]
 922 fn main() {
 923     panic!("Please use the cargo-clippy executable");
 924 }