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Update CHANGELOG for Rust 1.50 #6520

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Update CHANGELOG for Rust 1.50
phansch Dec 30, 2020
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Address review comments
phansch Dec 30, 2020
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133 changes: 130 additions & 3 deletions CHANGELOG.md
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Expand Up @@ -6,11 +6,138 @@ document.

## Unreleased / In Rust Nightly

[b20d4c1...master](https://github.com/rust-lang/rust-clippy/compare/b20d4c1...master)
[4911ab1...master](https://github.com/rust-lang/rust-clippy/compare/4911ab1...master)

## Rust 1.50

Current beta, release 2021-02-11

[b20d4c1...4911ab1](https://github.com/rust-lang/rust-clippy/compare/b20d4c1...4911ab1)

### New Lints

* [`suspicious_operation_groupings`] [#6086](https://github.com/rust-lang/rust-clippy/pull/6086)
* [`size_of_in_element_count`] [#6394](https://github.com/rust-lang/rust-clippy/pull/6394)
* [`unnecessary_wraps`] [#6070](https://github.com/rust-lang/rust-clippy/pull/6070)
* [`let_underscore_drop`] [#6305](https://github.com/rust-lang/rust-clippy/pull/6305)
* [`collapsible_match`] [#6402](https://github.com/rust-lang/rust-clippy/pull/6402)
* [`redundant_else`] [#6330](https://github.com/rust-lang/rust-clippy/pull/6330)
* [`zero_sized_map_values`] [#6218](https://github.com/rust-lang/rust-clippy/pull/6218)
* [`print_stderr`] [#6367](https://github.com/rust-lang/rust-clippy/pull/6367)
* [`string_from_utf8_as_bytes`] [#6134](https://github.com/rust-lang/rust-clippy/pull/6134)

### Moves and Deprecations

* Previously deprecated [`str_to_string`] and [`string_to_string`] have been un-deprecated
as `restriction` lints [#6333](https://github.com/rust-lang/rust-clippy/pull/6333)
* Deprecate [`panic_params`] lint. This is now available in rustc as `panic_fmt`
[#6351](https://github.com/rust-lang/rust-clippy/pull/6351)
* Move [`map_err_ignore`] to `restriction`
[#6416](https://github.com/rust-lang/rust-clippy/pull/6416)
* Move [`await_holding_refcell_ref`] to `pedantic`
[#6354](https://github.com/rust-lang/rust-clippy/pull/6354)
* Move [`await_holding_lock`] to `pedantic`
[#6354](https://github.com/rust-lang/rust-clippy/pull/6354)

### Enhancements

* Add the `unreadable-literal-lint-fractions` configuration to disable
the `unreadable_literal` lint for fractions
[#6421](https://github.com/rust-lang/rust-clippy/pull/6421)
* [`clone_on_copy`]: Now shows the type in the lint message
[#6443](https://github.com/rust-lang/rust-clippy/pull/6443)
* [`redundant_pattern_matching`]: Now also lints on `std::task::Poll`
[#6339](https://github.com/rust-lang/rust-clippy/pull/6339)
* [`redundant_pattern_matching`]: Additionally also lints on `std::net::IpAddr`
[#6377](https://github.com/rust-lang/rust-clippy/pull/6377)
* [`search_is_some`]: Now suggests `contains` instead of `find(foo).is_some()`
[#6119](https://github.com/rust-lang/rust-clippy/pull/6119)
* [`clone_double_ref`]: Now prints the reference type in the lint message
[#6442](https://github.com/rust-lang/rust-clippy/pull/6442)
* [`modulo_one`]: Now also lints on -1.
[#6360](https://github.com/rust-lang/rust-clippy/pull/6360)
* [`empty_loop`]: Now lints no_std crates, too
[#6205](https://github.com/rust-lang/rust-clippy/pull/6205)
* [`or_fun_call`]: Now also lints when indexing `HashMap` or `BTreeMap`
[#6267](https://github.com/rust-lang/rust-clippy/pull/6267)
* [`wrong_self_convention`]: Now also lints in trait definitions
[#6316](https://github.com/rust-lang/rust-clippy/pull/6316)
* [`needless_borrow`]: Print the type in the lint message
[#6449](https://github.com/rust-lang/rust-clippy/pull/6449)

[msrv_readme]: https://github.com/rust-lang/rust-clippy#specifying-the-minimum-supported-rust-version

### False Positive Fixes

* [`manual_range_contains`]: No longer lints in `const fn`
[#6382](https://github.com/rust-lang/rust-clippy/pull/6382)
* [`unnecessary_lazy_evaluations`]: No longer lints if closure argument is used
[#6370](https://github.com/rust-lang/rust-clippy/pull/6370)
* [`match_single_binding`]: Now ignores cases with `#[cfg()]` macros
[#6435](https://github.com/rust-lang/rust-clippy/pull/6435)
* [`match_like_matches_macro`]: No longer lints on arms with attributes
[#6290](https://github.com/rust-lang/rust-clippy/pull/6290)
* [`map_clone`]: No longer lints with deref and clone
[#6269](https://github.com/rust-lang/rust-clippy/pull/6269)
* [`map_clone`]: No longer lints in the case of &mut
[#6301](https://github.com/rust-lang/rust-clippy/pull/6301)
* [`needless_update`]: Now ignores `non_exhaustive` structs
[#6464](https://github.com/rust-lang/rust-clippy/pull/6464)
* [`needless_collect`]: No longer lints when a collect is needed multiple times
[#6313](https://github.com/rust-lang/rust-clippy/pull/6313)
* [`unnecessary_cast`] No longer lints cfg-dependent types
[#6369](https://github.com/rust-lang/rust-clippy/pull/6369)
* [`declare_interior_mutable_const`] and [`borrow_interior_mutable_const`]:
Both now ignore enums with frozen variants
[#6110](https://github.com/rust-lang/rust-clippy/pull/6110)


### Suggestion Fixes/Improvements

* [`vec_box`]: Provide correct type scope suggestion
[#6271](https://github.com/rust-lang/rust-clippy/pull/6271)
* [`manual_range_contains`]: Give correct suggestion when using floats
[#6320](https://github.com/rust-lang/rust-clippy/pull/6320)
* [`unnecessary_lazy_evaluations`]: Don't always mark suggestion as MachineApplicable
[#6272](https://github.com/rust-lang/rust-clippy/pull/6272)
* [`manual_async_fn`]: Improve suggestion formatting
[#6294](https://github.com/rust-lang/rust-clippy/pull/6294)
* [`unnecessary_cast`]: Fix incorrectly formatted float literal suggestion
[#6362](https://github.com/rust-lang/rust-clippy/pull/6362)

### ICE Fixes

* Fix a crash in [`from_iter_instead_of_collect`]
[#6304](https://github.com/rust-lang/rust-clippy/pull/6304)
* Fix a silent crash when parsing doc comments in [`needless_doctest_main`]
[#6458](https://github.com/rust-lang/rust-clippy/pull/6458)

### Documentation Improvements

* The lint website search has been improved ([#6477](https://github.com/rust-lang/rust-clippy/pull/6477)):
* Searching for lints with dashes and spaces is possible now. For example
`missing-errors-doc` and `missing errors doc` are now valid aliases for lint names
* Improved fuzzy search in lint descriptions
* Various README improvements
[#6287](https://github.com/rust-lang/rust-clippy/pull/6287)
* Add known problems to [`comparison_chain`] documentation
[#6390](https://github.com/rust-lang/rust-clippy/pull/6390)
* Fix example used in [`cargo_common_metadata`]
[#6293](https://github.com/rust-lang/rust-clippy/pull/6293)
* Improve [`map_clone`] documentation
[#6340](https://github.com/rust-lang/rust-clippy/pull/6340)

### Others

* You can now tell Clippy about the MSRV your project supports. Please refer to
the specific README section to learn more about MSRV support [here][msrv_readme]
[#6201](https://github.com/rust-lang/rust-clippy/pull/6201)
Comment on lines +132 to +134
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This seems like a big thing that's all the way down at the end. Shouldn't it be up there near the top?

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We want to release a blog post about this. I prefer the structure of the changelog we currently have.

I want to write the blog post some time before 1.50.

* Add `--no-deps` option to avoid running on path dependencies in workspaces
[#6188](https://github.com/rust-lang/rust-clippy/pull/6188)

## Rust 1.49

Current beta, release 2020-12-31
Current stable, released 2020-12-31

[e636b88...b20d4c1](https://github.com/rust-lang/rust-clippy/compare/e636b88...b20d4c1)

Expand Down Expand Up @@ -116,7 +243,7 @@ Current beta, release 2020-12-31

## Rust 1.48

Current stable, released 2020-11-19
Released 2020-11-19

[09bd400...e636b88](https://github.com/rust-lang/rust-clippy/compare/09bd400...e636b88)

Expand Down