The bug was dues to the constant bytes being compared instead of their
values. This meant that negative values were being treated as larger
than some positive values.

Fixes rust-lang#7829

I broke this script in rust-lang#7502, so that the stable symlink isn't generated
anymore. This reverts this change.

Closes rust-lang#7796

…amsteffen

Fix FP: no lint when cast is coming from `signum` method call for `cast_possible_truncation` lint

Fixes a FP when cast is coming from `signum` method call

fixes: rust-lang#5395

changelog: [`cast_possible_truncation`] Fix FP when cast is coming from `signum` method call

Make useless_format recognize format!("")

Closes rust-lang#7796

changelog: [`useless_format`] Fix for false negitive for `format!("")`

Fix deploy script

I broke this script in rust-lang#7502, so that the stable symlink isn't generated
anymore. This reverts this change.

changelog: none

missing_safety_doc: Handle 'implementation safety' headers as well

We hit some FPs on this in `yoke`, it's somewhat normal to mark trait impl safety with "implementation safety". We could also broaden the check for headers which contain the word "safety" somehow, or split out impl safety stuff to only apply to traits.

changelog: handle 'implementation safety' headers in `missing_safety_doc`

…vidtwco

Don't mark for loop iter expression as desugared

We typically don't mark spans of lowered things as desugared. This helps Clippy rightly discern when code is (not) from expansion. This was discovered by ``@flip1995`` at rust-lang/rust-clippy#7789 (comment).

Properly consider uncased and titlecased characters.
Fixes rust-lang#7863.

Fix typo on utils/lib

Found some typo when looking through `clippy_utils/src/lib.rs` 🙂

changelog: none

Update rustfmt

changelog: none

Something changed with `rustup update nightly`

…=flip1995

recommend new branch or deleting branch when synching from rust

changelog: none

r? `@flip1995` - thanks again for your assistance in zulip earlier, figured I'd take a pass at incorporating your recommendation to delete or use a new branch into the excellent docs here

Update CHANGELOG

r? `@xFrednet`  (you showed to be a reliable reviewer for this :) )

[Rendered](https://github.com/flip1995/rust-clippy/blob/changelog/CHANGELOG.md)

changelog: none

Also updated one configuration for nicer formatting

…Frednet

Add suggestion to missing backticks error

changelog: Add a machine applicable suggestion for the [`doc_markdown`] missing backticks lint

closes: rust-lang#7737

…r=flip1995

Update Clippy dependencies

Clippy has two outdated dependencies, where one indirect dependency has been flagged by rustsec for dropping a lifetime. See [RUSTSEC-2020-0146](https://rustsec.org/advisories/RUSTSEC-2020-0146). This PR updates these dependencies.

With previous dependency updates, it was tried to prevent duplicates in the `Cargo.lock` file of rust-lang/rust. I've tried to keep this in mind with this update.

* Dependency `semver`
    * Used in `src/tools/cargo/Cargo.toml` as version `1.0.3`
    * Used in `src/tools/rust-analyzer/crates/project_model/Cargo.toml` as version `1`
    * Updated in Clippy from `0.11` to `1.0` (Clippy usually defines the major and minor patch version). The `Cargo.lock` file lists `1.0.3` which is one patch version behind the most recent one but prevents a duplicate with cargo's pinned version.
* Dependency `cargo_metadata`
    * Used in several tools as `0.14`
    * Used in `src/tools/tidy` and `src/tools/rls` as `0.12`
    * Updated in Clippy from `0.12` to `0.14`

All updates to the `Cargo.lock` have been done automatically by `x.py`.

There are still some tools with these outdated dependencies. Clippy didn't require any changes, and it would be likely that the others could also be updated without any problem. Let me know if I should try to update them as well 🙃.

Keep up the good work, whoever is reading this 🦀

---

For Clippy:

changelog: none

lower_case in  span_lint_and_help document

changelog: none

Rustup

r? `@ghost`

changelog: none