Auto merge of #80623 - flip1995:clippyup, r=Manishearth

Update Clippy

Biweekly Clippy update.

This includes a Cargo.lock update for the recent Clippy version bump.

r? `@Manishearth`

Cargo.lock

@@ -568,7 +568,7 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.212"
+version = "0.1.51"
 dependencies = [
  "cargo_metadata 0.12.0",
  "clippy-mini-macro-test",
@@ -589,7 +589,7 @@ version = "0.2.0"
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.212"
+version = "0.1.51"
 dependencies = [
  "cargo_metadata 0.12.0",
  "if_chain",

src/tools/clippy/.github/ISSUE_TEMPLATE/false_negative.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report (False Negative)
+about: Create a bug report about missing warnings from a lint
+labels: L-bug, L-false-negative
+---
+<!--
+Thank you for filing a bug report! 🐛 Please provide a short summary of the bug,
+along with any information you feel relevant to replicating the bug.
+-->
+Lint name:
+
+
+I tried this code:
+
+```rust
+<code>
+```
+
+I expected to see this happen: *explanation*
+
+Instead, this happened: *explanation*
+
+### Meta
+
+- `cargo clippy -V`: e.g. clippy 0.0.212 (f455e46 2020-06-20)
+- `rustc -Vv`:
+  ```
+  rustc 1.46.0-nightly (f455e46ea 2020-06-20)
+  binary: rustc
+  commit-hash: f455e46eae1a227d735091091144601b467e1565
+  commit-date: 2020-06-20
+  host: x86_64-unknown-linux-gnu
+  release: 1.46.0-nightly
+  LLVM version: 10.0
+  ```

src/tools/clippy/.github/ISSUE_TEMPLATE/false_positive.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report (False Positive)
+about: Create a bug report about a wrongly emitted lint warning
+labels: L-bug, L-false-positive
+---
+<!--
+Thank you for filing a bug report! 🐛 Please provide a short summary of the bug,
+along with any information you feel relevant to replicating the bug.
+-->
+Lint name:
+
+
+I tried this code:
+
+```rust
+<code>
+```
+
+I expected to see this happen: *explanation*
+
+Instead, this happened: *explanation*
+
+### Meta
+
+- `cargo clippy -V`: e.g. clippy 0.0.212 (f455e46 2020-06-20)
+- `rustc -Vv`:
+  ```
+  rustc 1.46.0-nightly (f455e46ea 2020-06-20)
+  binary: rustc
+  commit-hash: f455e46eae1a227d735091091144601b467e1565
+  commit-date: 2020-06-20
+  host: x86_64-unknown-linux-gnu
+  release: 1.46.0-nightly
+  LLVM version: 10.0
+  ```

src/tools/clippy/.github/workflows/clippy.yml

@@ -50,6 +50,9 @@ jobs:
     - name: Build
       run: cargo build --features deny-warnings,internal-lints
 
+    - name: Test "--fix -Zunstable-options"
+      run: cargo run --features deny-warnings,internal-lints --bin cargo-clippy -- clippy --fix -Zunstable-options
+
     - name: Test
       run: cargo test --features deny-warnings,internal-lints
 

src/tools/clippy/CHANGELOG.md

@@ -1841,6 +1841,7 @@ Released 2018-09-13
 [`forget_copy`]: https://rust-lang.github.io/rust-clippy/master/index.html#forget_copy
 [`forget_ref`]: https://rust-lang.github.io/rust-clippy/master/index.html#forget_ref
 [`from_iter_instead_of_collect`]: https://rust-lang.github.io/rust-clippy/master/index.html#from_iter_instead_of_collect
+[`from_over_into`]: https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
 [`future_not_send`]: https://rust-lang.github.io/rust-clippy/master/index.html#future_not_send
 [`get_last_with_len`]: https://rust-lang.github.io/rust-clippy/master/index.html#get_last_with_len
 [`get_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap

src/tools/clippy/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.0.212"
+version = "0.1.51"
 authors = [
 	"Manish Goregaokar <[email protected]>",
 	"Andre Bogus <[email protected]>",
@@ -29,7 +29,7 @@ path = "src/driver.rs"
 
 [dependencies]
 # begin automatic update
-clippy_lints = { version = "0.0.212", path = "clippy_lints" }
+clippy_lints = { version = "0.1.50", path = "clippy_lints" }
 # end automatic update
 semver = "0.11"
 rustc_tools_util = { version = "0.2.0", path = "rustc_tools_util" }

src/tools/clippy/README.md

@@ -10,16 +10,16 @@ A collection of lints to catch common mistakes and improve your [Rust](https://g
 Lints are divided into categories, each with a default [lint level](https://doc.rust-lang.org/rustc/lints/levels.html).
 You can choose how much Clippy is supposed to ~~annoy~~ help you by changing the lint level by category.
 
-Category | Description | Default level
--- | -- | --
-`clippy::all` | all lints that are on by default (correctness, style, complexity, perf) | **warn/deny**
-`clippy::correctness` | code that is outright wrong or very useless | **deny**
-`clippy::style` | code that should be written in a more idiomatic way | **warn**
-`clippy::complexity` | code that does something simple but in a complex way | **warn**
-`clippy::perf` | code that can be written to run faster | **warn**
-`clippy::pedantic` | lints which are rather strict or might have false positives | allow
-`clippy::nursery` | new lints that are still under development | allow
-`clippy::cargo` | lints for the cargo manifest | allow
+| Category              | Description                                                             | Default level |
+| --------------------- | ----------------------------------------------------------------------- | ------------- |
+| `clippy::all`         | all lints that are on by default (correctness, style, complexity, perf) | **warn/deny** |
+| `clippy::correctness` | code that is outright wrong or very useless                             | **deny**      |
+| `clippy::style`       | code that should be written in a more idiomatic way                     | **warn**      |
+| `clippy::complexity`  | code that does something simple but in a complex way                    | **warn**      |
+| `clippy::perf`        | code that can be written to run faster                                  | **warn**      |
+| `clippy::pedantic`    | lints which are rather strict or might have false positives             | allow         |
+| `clippy::nursery`     | new lints that are still under development                              | allow         |
+| `clippy::cargo`       | lints for the cargo manifest                                            | allow         |
 
 More to come, please [file an issue](https://github.com/rust-lang/rust-clippy/issues) if you have ideas!
 
@@ -98,17 +98,6 @@ If you want to run Clippy **only** on the given crate, use the `--no-deps` optio
 cargo clippy -p example -- --no-deps 
 ```
 
-### Running Clippy from the command line without installing it
-
-To have cargo compile your crate with Clippy without Clippy installation
-in your code, you can use:
-
-```terminal
-cargo run --bin cargo-clippy --manifest-path=path_to_clippys_Cargo.toml
-```
-
-*Note:* Be sure that Clippy was compiled with the same version of rustc that cargo invokes here!
-
 ### Travis CI
 
 You can add Clippy to Travis CI in the same way you use it locally:
@@ -130,18 +119,6 @@ script:
   # etc.
 ```
 
-If you are on nightly, It might happen that Clippy is not available for a certain nightly release.
-In this case you can try to conditionally install Clippy from the Git repo.
-
-```yaml
-language: rust
-rust:
-  - nightly
-before_script:
-   - rustup component add clippy --toolchain=nightly || cargo install --git https://github.com/rust-lang/rust-clippy/ --force clippy
-   # etc.
-```
-
 Note that adding `-D warnings` will cause your build to fail if **any** warnings are found in your code.
 That includes warnings found by rustc (e.g. `dead_code`, etc.). If you want to avoid this and only cause
 an error for Clippy warnings, use `#![deny(clippy::all)]` in your code or `-D clippy::all` on the command

src/tools/clippy/clippy_dev/src/ra_setup.rs

@@ -3,7 +3,7 @@
 use std::fs;
 use std::fs::File;
 use std::io::prelude::*;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 
 // This module takes an absolute path to a rustc repo and alters the dependencies to point towards
 // the respective rustc subcrates instead of using extern crate xyz.
@@ -44,7 +44,7 @@ pub fn run(rustc_path: Option<&str>) {
 }
 
 fn inject_deps_into_manifest(
-    rustc_source_dir: &PathBuf,
+    rustc_source_dir: &Path,
     manifest_path: &str,
     cargo_toml: &str,
     lib_rs: &str,

src/tools/clippy/clippy_lints/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "clippy_lints"
 # begin automatic update
-version = "0.0.212"
+version = "0.1.51"
 # end automatic update
 authors = [
 	"Manish Goregaokar <[email protected]>",