Auto merge of rust-lang#100419 - flip1995:clippyup, r=Manishearth

Update Clippy

r? `@Manishearth`

Author: bors

CHANGELOG.md

@@ -965,7 +965,7 @@ Released 2021-09-09
   [#7407](https://github.com/rust-lang/rust-clippy/pull/7407)
 * [`redundant_allocation`]: Now additionally supports the `Arc<>` type
   [#7308](https://github.com/rust-lang/rust-clippy/pull/7308)
-* [`blacklisted_name`]: Now allows blacklisted names in test code
+* [`disallowed_names`]: Now allows disallowed names in test code
   [#7379](https://github.com/rust-lang/rust-clippy/pull/7379)
 * [`redundant_closure`]: Suggests `&mut` for `FnMut`
   [#7437](https://github.com/rust-lang/rust-clippy/pull/7437)
@@ -2066,7 +2066,7 @@ Released 2020-08-27
   [#5692](https://github.com/rust-lang/rust-clippy/pull/5692)
 * [`if_same_then_else`]: Don't assume multiplication is always commutative
   [#5702](https://github.com/rust-lang/rust-clippy/pull/5702)
-* [`blacklisted_name`]: Remove `bar` from the default configuration
+* [`disallowed_names`]: Remove `bar` from the default configuration
   [#5712](https://github.com/rust-lang/rust-clippy/pull/5712)
 * [`redundant_pattern_matching`]: Avoid suggesting non-`const fn` calls in const contexts
   [#5724](https://github.com/rust-lang/rust-clippy/pull/5724)
@@ -3522,6 +3522,7 @@ Released 2018-09-13
 [`derive_partial_eq_without_eq`]: https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq
 [`disallowed_method`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_method
 [`disallowed_methods`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_methods
+[`disallowed_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_names
 [`disallowed_script_idents`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_script_idents
 [`disallowed_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_type
 [`disallowed_types`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_types
@@ -3685,6 +3686,7 @@ Released 2018-09-13
 [`manual_find`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find
 [`manual_find_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find_map
 [`manual_flatten`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten
+[`manual_instant_elapsed`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_instant_elapsed
 [`manual_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
 [`manual_memcpy`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
 [`manual_non_exhaustive`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_non_exhaustive
@@ -3816,11 +3818,13 @@ Released 2018-09-13
 [`or_then_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#or_then_unwrap
 [`out_of_bounds_indexing`]: https://rust-lang.github.io/rust-clippy/master/index.html#out_of_bounds_indexing
 [`overflow_check_conditional`]: https://rust-lang.github.io/rust-clippy/master/index.html#overflow_check_conditional
+[`overly_complex_bool_expr`]: https://rust-lang.github.io/rust-clippy/master/index.html#overly_complex_bool_expr
 [`panic`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic
 [`panic_in_result_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_in_result_fn
 [`panic_params`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_params
 [`panicking_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#panicking_unwrap
 [`partialeq_ne_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
+[`partialeq_to_none`]: https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
 [`path_buf_push_overwrite`]: https://rust-lang.github.io/rust-clippy/master/index.html#path_buf_push_overwrite
 [`pattern_type_mismatch`]: https://rust-lang.github.io/rust-clippy/master/index.html#pattern_type_mismatch
 [`possible_missing_comma`]: https://rust-lang.github.io/rust-clippy/master/index.html#possible_missing_comma

CONTRIBUTING.md

@@ -30,10 +30,10 @@ All contributors are expected to follow the [Rust Code of Conduct].
 ## The Clippy book
 
 If you're new to Clippy and don't know where to start the [Clippy book] includes
-a developer guide and is a good place to start your journey.
+a [developer guide] and is a good place to start your journey.
 
-<!-- FIXME: Link to the deployed book, once it is deployed through CI -->
-[Clippy book]: book/src
+[Clippy book]: https://doc.rust-lang.org/nightly/clippy/index.html
+[developer guide]: https://doc.rust-lang.org/nightly/clippy/development/index.html
 
 ## High level approach
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.64"
+version = "0.1.65"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

README.md

@@ -144,7 +144,7 @@ value` mapping e.g.
 
 ```toml
 avoid-breaking-exported-api = false
-blacklisted-names = ["toto", "tata", "titi"]
+disallowed-names = ["toto", "tata", "titi"]
 cognitive-complexity-threshold = 30
 ```
 

book/src/configuration.md

@@ -7,7 +7,7 @@ basic `variable = value` mapping eg.
 
 ```toml
 avoid-breaking-exported-api = false
-blacklisted-names = ["toto", "tata", "titi"]
+disallowed-names = ["toto", "tata", "titi"]
 cognitive-complexity-threshold = 30
 ```
 

clippy_dev/src/new_lint.rs

@@ -438,7 +438,7 @@ fn setup_mod_file(path: &Path, lint: &LintData<'_>) -> io::Result<&'static str>
     let mut lint_context = None;
 
     let mut iter = rustc_lexer::tokenize(&file_contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {

clippy_dev/src/update_lints.rs

@@ -836,7 +836,7 @@ pub(crate) struct LintDeclSearchResult<'a> {
 fn parse_contents(contents: &str, module: &str, lints: &mut Vec<Lint>) {
     let mut offset = 0usize;
     let mut iter = tokenize(contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {
@@ -899,7 +899,7 @@ fn parse_contents(contents: &str, module: &str, lints: &mut Vec<Lint>) {
 fn parse_deprecated_contents(contents: &str, lints: &mut Vec<DeprecatedLint>) {
     let mut offset = 0usize;
     let mut iter = tokenize(contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {
@@ -946,7 +946,7 @@ fn parse_renamed_contents(contents: &str, lints: &mut Vec<RenamedLint>) {
     for line in contents.lines() {
         let mut offset = 0usize;
         let mut iter = tokenize(line).map(|t| {
-            let range = offset..offset + t.len;
+            let range = offset..offset + t.len as usize;
             offset = range.end;
 
             LintDeclSearchResult {

clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.64"
+version = "0.1.65"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_lints/src/assertions_on_result_states.rs

@@ -53,13 +53,14 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
                 if result_type_with_refs != result_type {
                     return;
                 } else if let Res::Local(binding_id) = path_res(cx, recv)
-                    && local_used_after_expr(cx, binding_id, recv) {
+                    && local_used_after_expr(cx, binding_id, recv)
+                {
                     return;
                 }
             }
             let mut app = Applicability::MachineApplicable;
             match method_segment.ident.as_str() {
-                "is_ok" if has_debug_impl(cx, substs.type_at(1)) => {
+                "is_ok" if type_suitable_to_unwrap(cx, substs.type_at(1)) => {
                     span_lint_and_sugg(
                         cx,
                         ASSERTIONS_ON_RESULT_STATES,
@@ -73,7 +74,7 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
                         app,
                     );
                 }
-                "is_err" if has_debug_impl(cx, substs.type_at(0)) => {
+                "is_err" if type_suitable_to_unwrap(cx, substs.type_at(0)) => {
                     span_lint_and_sugg(
                         cx,
                         ASSERTIONS_ON_RESULT_STATES,
@@ -99,3 +100,7 @@ fn has_debug_impl<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
         .get_diagnostic_item(sym::Debug)
         .map_or(false, |debug| implements_trait(cx, ty, debug, &[]))
 }
+
+fn type_suitable_to_unwrap<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
+    has_debug_impl(cx, ty) && !ty.is_unit() && !ty.is_never()
+}

clippy_lints/src/booleans.rs

@@ -64,15 +64,15 @@ declare_clippy_lint! {
     /// if a {}
     /// ```
     #[clippy::version = "pre 1.29.0"]
-    pub LOGIC_BUG,
+    pub OVERLY_COMPLEX_BOOL_EXPR,
     correctness,
     "boolean expressions that contain terminals which can be eliminated"
 }
 
 // For each pairs, both orders are considered.
 const METHODS_WITH_NEGATION: [(&str, &str); 2] = [("is_some", "is_none"), ("is_err", "is_ok")];
 
-declare_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, LOGIC_BUG]);
+declare_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, OVERLY_COMPLEX_BOOL_EXPR]);
 
 impl<'tcx> LateLintPass<'tcx> for NonminimalBool {
     fn check_fn(
@@ -396,7 +396,7 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> {
                     if stats.terminals[i] != 0 && simplified_stats.terminals[i] == 0 {
                         span_lint_hir_and_then(
                             self.cx,
-                            LOGIC_BUG,
+                            OVERLY_COMPLEX_BOOL_EXPR,
                             e.hir_id,
                             e.span,
                             "this boolean expression contains a logic bug",