Update cargo, clippy

Author: ehuss

.github/workflows/clippy_bors.yml

@@ -231,7 +231,8 @@ jobs:
       matrix:
         integration:
         - 'rust-lang/cargo'
-        - 'rust-lang/rls'
+        # FIXME: Re-enable once we can test with rls again.
+        # - 'rust-lang/rls'
         - 'rust-lang/chalk'
         - 'rust-lang/rustfmt'
         - 'Marwes/combine'

.github/workflows/deploy.yml

@@ -15,6 +15,7 @@ env:
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    if: github.repository == 'rust-lang/rust-clippy'
 
     steps:
     # Setup

CHANGELOG.md

@@ -1169,6 +1169,7 @@ Released 2018-09-13
 [`ifs_same_cond`]: https://rust-lang.github.io/rust-clippy/master/index.html#ifs_same_cond
 [`implicit_hasher`]: https://rust-lang.github.io/rust-clippy/master/index.html#implicit_hasher
 [`implicit_return`]: https://rust-lang.github.io/rust-clippy/master/index.html#implicit_return
+[`imprecise_flops`]: https://rust-lang.github.io/rust-clippy/master/index.html#imprecise_flops
 [`inconsistent_digit_grouping`]: https://rust-lang.github.io/rust-clippy/master/index.html#inconsistent_digit_grouping
 [`indexing_slicing`]: https://rust-lang.github.io/rust-clippy/master/index.html#indexing_slicing
 [`ineffective_bit_mask`]: https://rust-lang.github.io/rust-clippy/master/index.html#ineffective_bit_mask
@@ -1210,7 +1211,6 @@ Released 2018-09-13
 [`lossy_float_literal`]: https://rust-lang.github.io/rust-clippy/master/index.html#lossy_float_literal
 [`main_recursion`]: https://rust-lang.github.io/rust-clippy/master/index.html#main_recursion
 [`manual_memcpy`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
-[`manual_mul_add`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_mul_add
 [`manual_saturating_arithmetic`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_saturating_arithmetic
 [`manual_swap`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
 [`many_single_char_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
@@ -1349,6 +1349,7 @@ Released 2018-09-13
 [`string_lit_as_bytes`]: https://rust-lang.github.io/rust-clippy/master/index.html#string_lit_as_bytes
 [`string_to_string`]: https://rust-lang.github.io/rust-clippy/master/index.html#string_to_string
 [`struct_excessive_bools`]: https://rust-lang.github.io/rust-clippy/master/index.html#struct_excessive_bools
+[`suboptimal_flops`]: https://rust-lang.github.io/rust-clippy/master/index.html#suboptimal_flops
 [`suspicious_arithmetic_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_arithmetic_impl
 [`suspicious_assignment_formatting`]: https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_assignment_formatting
 [`suspicious_else_formatting`]: https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_else_formatting

Cargo.toml

@@ -37,7 +37,7 @@ clippy_lints = { version = "0.0.212", path = "clippy_lints" }
 regex = "1"
 semver = "0.9"
 rustc_tools_util = { version = "0.2.0", path = "rustc_tools_util"}
-git2 = { version = "0.11", optional = true }
+git2 = { version = "0.12", optional = true }
 tempfile = { version = "3.1.0", optional = true }
 lazy_static = "1.0"
 

README.md

@@ -5,7 +5,7 @@
 
 A collection of lints to catch common mistakes and improve your [Rust](https://github.com/rust-lang/rust) code.
 
-[There are 357 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are 358 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
 
 We have a bunch of lint categories to allow you to choose how much Clippy is supposed to ~~annoy~~ help you:
 

clippy_dev/src/new_lint.rs

@@ -13,7 +13,7 @@ pub fn create(pass: Option<&str>, lint_name: Option<&str>, category: Option<&str
     match open_files(lint_name) {
         Ok((mut test_file, mut lint_file)) => {
             let (pass_type, pass_lifetimes, pass_import, context_import) = match pass {
-                "early" => ("EarlyLintPass", "", "use syntax::ast::*;", "EarlyContext"),
+                "early" => ("EarlyLintPass", "", "use rustc_ast::ast::*;", "EarlyContext"),
                 "late" => ("LateLintPass", "<'_, '_>", "use rustc_hir::*;", "LateContext"),
                 _ => {
                     unreachable!("`pass_type` should only ever be `early` or `late`!");

clippy_lints/src/approx_const.rs

@@ -1,10 +1,10 @@
 use crate::utils::span_lint;
+use rustc_ast::ast::{FloatTy, LitFloatType, LitKind};
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::symbol;
 use std::f64::consts as f64;
-use syntax::ast::{FloatTy, LitFloatType, LitKind};
 
 declare_clippy_lint! {
     /// **What it does:** Checks for floating point literals that approximate

clippy_lints/src/as_conversions.rs

@@ -1,7 +1,7 @@
 use rustc::lint::in_external_macro;
+use rustc_ast::ast::{Expr, ExprKind};
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use syntax::ast::{Expr, ExprKind};
 
 use crate::utils::span_lint_and_help;
 

clippy_lints/src/assertions_on_constants.rs

@@ -2,10 +2,10 @@ use crate::consts::{constant, Constant};
 use crate::utils::paths;
 use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, snippet_opt, span_lint_and_help};
 use if_chain::if_chain;
+use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind, PatKind, UnOp};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use syntax::ast::LitKind;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for `assert!(true)` and `assert!(false)` calls.

clippy_lints/src/attrs.rs

@@ -8,6 +8,8 @@ use crate::utils::{
 use if_chain::if_chain;
 use rustc::lint::in_external_macro;
 use rustc::ty;
+use rustc_ast::ast::{AttrKind, AttrStyle, Attribute, Lit, LitKind, MetaItemKind, NestedMetaItem};
+use rustc_ast::util::lev_distance::find_best_match_for_name;
 use rustc_errors::Applicability;
 use rustc_hir::{
     Block, Expr, ExprKind, ImplItem, ImplItemKind, Item, ItemKind, StmtKind, TraitItem, TraitItemKind, TraitMethod,
@@ -17,8 +19,6 @@ use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::source_map::Span;
 use rustc_span::symbol::Symbol;
 use semver::Version;
-use syntax::ast::{AttrKind, AttrStyle, Attribute, Lit, LitKind, MetaItemKind, NestedMetaItem};
-use syntax::util::lev_distance::find_best_match_for_name;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for items annotated with `#[inline(always)]`,