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Make rustdoc lints a tool lint instead of built-in #80527

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merged 7 commits into from
Mar 4, 2021

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@jyn514 jyn514 commented Dec 30, 2020

  • Rename broken_intra_doc_links to rustdoc::broken_intra_doc_links (and similar for other rustdoc lints; I don't expect any others to be used frequently, though).
  • Ensure that the old lint names still work and give deprecation errors
  • Register lints even when running doctests
  • Move lint machinery into a separate file
  • Add declare_rustdoc_lint! macro

Unblocks #80300, #79816, #80965. Makes the strangeness in #77364 more apparent to the end user (note that missing_docs is not moved to rustdoc in this PR). Closes #78786.

Current status

This is blocked on #82620 (see #80527 (comment))

@jyn514 jyn514 added T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. T-lang Relevant to the language team, which will review and decide on the PR/issue. needs-fcp This change is insta-stable, so needs a completed FCP to proceed. labels Dec 30, 2020
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r? @GuillaumeGomez

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Dec 30, 2020
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@jyn514 jyn514 changed the title Make rustdoc lints to a tool lint instead of built-in Make rustdoc lints a tool lint instead of built-in Jan 15, 2021
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@rustbot rustbot added this to the 1.52.0 milestone Mar 4, 2021
@jyn514 jyn514 deleted the rustdoc-lints branch March 4, 2021 14:36
@apiraino apiraino removed the to-announce Announce this issue on triage meeting label Mar 4, 2021
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lopopolo commented Mar 6, 2021

I would have liked to see the rustdoc lint group/tool name exist on stable before this change was merged.

It is not possible to run both nightly and stable builds with -D warnings and warn(broken_intra_doc_links)/warn(rustdoc:: broken_intra_doc_links) now because, despite allow(unknown_lints), the unknown tool name results in a hard error:

error[E0710]: an unknown tool name found in scoped lint: `rustdoc::broken_intra_doc_links`
 --> artichoke-core/src/lib.rs:9:9
  |
9 | #![warn(rustdoc::broken_intra_doc_links)]
  |         ^^^^^^^

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jyn514 commented Mar 6, 2021

It is not possible to run both nightly and stable builds with -D warnings and warn(broken_intra_doc_links)/warn(rustdoc:: broken_intra_doc_links) now because, despite allow(unknown_lints), the unknown tool name results in a hard error:

If you use the original name (broken_intra_doc_links) and allow(renamed_removed_lints), it should work.

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lopopolo commented Mar 6, 2021

@jyn514 does the introduction of a new tool name mean that declaring this lint as a crate level warn pragma will bump the MSRV of the crate?

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lopopolo commented Mar 6, 2021

If you use the original name (broken_intra_doc_links) and allow(renamed_removed_lints), it should work.

Since the lint has been removed, does this mean running nightly rustdoc will not detect broken intradoc links anymore?

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jyn514 commented Mar 6, 2021

Since the lint has been removed, does this mean running nightly rustdoc will not detect broken intradoc links anymore?

No, the lint name will still apply (since #82620).

@jyn514 does the introduction of a new tool name mean that declaring this lint as a crate level warn pragma will bump the MSRV of the crate?

Yes, unfortunately. There's no way to fix this because past releases are immutable (ideally the unknown tool name would only be a warning and not a hard error).

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lopopolo commented Mar 6, 2021

Thanks for the context. I think the best path forward for me is to remove the pragmas and add -D rustdoc::broken_intra_doc_links to CI via RUSTDOCFLAGS.

ideally the unknown tool name would only be a warning and not a hard error

Has this change landed in nightly/is there a ticket for it?

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jyn514 commented Mar 6, 2021

Has this change landed in nightly/is there a ticket for it?

I think #66079 (comment) is the closest issue.

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lopopolo commented Mar 6, 2021

Thank you!

Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 13, 2021
…,GuillaumeGomez

Rename `rustdoc` to `rustdoc::all`

When rustdoc lints were changed to be tool lints, the `rustdoc` group was removed, leading to spurious warnings like

```
warning: unknown lint: `rustdoc`
```

The lint group still worked when rustdoc ran, since rustdoc added the group itself.

This renames the group to `rustdoc::all` for consistency with `clippy::all` and the rest of the rustdoc lints.

Follow-up to rust-lang#80527.
r? `@Manishearth`
JohnTitor added a commit to JohnTitor/rust that referenced this pull request Mar 14, 2021
…,GuillaumeGomez

Rename `rustdoc` to `rustdoc::all`

When rustdoc lints were changed to be tool lints, the `rustdoc` group was removed, leading to spurious warnings like

```
warning: unknown lint: `rustdoc`
```

The lint group still worked when rustdoc ran, since rustdoc added the group itself.

This renames the group to `rustdoc::all` for consistency with `clippy::all` and the rest of the rustdoc lints.

Follow-up to rust-lang#80527.
r? ``@Manishearth``
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jyn514 commented Mar 16, 2021

I would have liked to see the rustdoc lint group/tool name exist on stable before this change was merged.

@lopopolo I opened #83203 to turn off the warnings until this makes it to stable.

JohnTitor added a commit to JohnTitor/rust that referenced this pull request Mar 17, 2021
Don't warn about old rustdoc lint names (temporarily)

Since rust-lang#80527, rustdoc users have an unpleasant situation: they can either use the new tool lint names (`rustdoc::non_autolinks`) or they can use the old names (`non_autolinks`). If they use the tool lints, they get a hard error on stable compilers, because rustc rejects all tool names it doesn't recognize (rust-lang#66079 (comment)). If they use the old name, they get a warning to rename the lint to the new name. The only way to compile without warnings is to add `#[allow(renamed_removed_lints)]`, which defeats the whole point of the change: we *want* people to switch to the new name.

To avoid people silencing the lint and never migrating to the tool lint, this avoids warning about the old name, while still allowing you to use the new name. Once the new `rustdoc` tool name makes it to the stable channel, we can change these lints to warn again.

This adds the new lint functions `register_alias` and `register_ignored` - I didn't see an existing way to do this.

r? `@Manishearth` cc `@rust-lang/rustdoc`
wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request May 9, 2021
Package changes:
 * bump bootstraps to 1.51.0.
 * adjust patches and cargo checksums as required
 * 1.51 failed to build natively on 32-bit armv7, there is hope
   that this is fixed with 1.52.  (1.51 can be built with netbsd32
   emulation on a aarch64 system).

Upsteream changes:

Version 1.52.0 (2021-05-06)
============================

Language
--------
- [Added the `unsafe_op_in_unsafe_fn` lint, which checks whether the unsafe
  code in an `unsafe fn` is wrapped in a `unsafe` block.][79208] This lint
  is allowed by default, and may become a warning or hard error in a
  future edition.
- [You can now cast mutable references to arrays to a pointer of the same
  type as the element.][81479]

Compiler
--------
- [Upgraded the default LLVM to LLVM 12.][81451]

Added tier 3\* support for the following targets.

- [`s390x-unknown-linux-musl`][82166]
- [`riscv32gc-unknown-linux-musl` & `riscv64gc-unknown-linux-musl`][82202]
- [`powerpc-unknown-openbsd`][82733]

\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.

Libraries
---------
- [`OsString` now implements `Extend` and `FromIterator`.][82121]
- [`cmp::Reverse` now has `#[repr(transparent)]` representation.][81879]
- [`Arc<impl Error>` now implements `error::Error`.][80553]
- [All integer division and remainder operations are now `const`.][80962]

Stabilised APIs
-------------
- [`Arguments::as_str`]
- [`char::MAX`]
- [`char::REPLACEMENT_CHARACTER`]
- [`char::UNICODE_VERSION`]
- [`char::decode_utf16`]
- [`char::from_digit`]
- [`char::from_u32_unchecked`]
- [`char::from_u32`]
- [`slice::partition_point`]
- [`str::rsplit_once`]
- [`str::split_once`]

The following previously stable APIs are now `const`.

- [`char::len_utf8`]
- [`char::len_utf16`]
- [`char::to_ascii_uppercase`]
- [`char::to_ascii_lowercase`]
- [`char::eq_ignore_ascii_case`]
- [`u8::to_ascii_uppercase`]
- [`u8::to_ascii_lowercase`]
- [`u8::eq_ignore_ascii_case`]

Rustdoc
-------
- [Rustdoc lints are now treated as a tool lint, meaning that lints are
  now prefixed with `rustdoc::`
  (e.g. `#[warn(rustdoc::non_autolinks)]`).][80527]

  Using the old style is still allowed, and will become a warning in
  a future release.
- [Rustdoc now supports argument files.][82261]
- [Rustdoc now generates smart punctuation for documentation.][79423]
- [You can now use "task lists" in Rustdoc Markdown.][81766] E.g.
  ```markdown
  - [x] Complete
  - [ ] Todo
  ```

Misc
----
- [You can now pass multiple filters to tests.][81356] E.g.
  `cargo test -- foo bar` will run all tests that match `foo` and `bar`.
- [Rustup now distributes PDB symbols for the `std` library on Windows,
  allowing you to see `std` symbols when debugging.][82218]

Internal Only
-------------
These changes provide no direct user facing benefits, but represent significant
improvements to the internals and overall performance of rustc and
related tools.

- [Check the result cache before the DepGraph when ensuring queries][81855]
- [Try fast_reject::simplify_type in coherence before doing full check][81744]
- [Only store a LocalDefId in some HIR nodes][81611]
- [Store HIR attributes in a side table][79519]

Compatibility Notes
-------------------
- [Cargo build scripts are now forbidden from setting `RUSTC_BOOTSTRAP`.]
  [cargo/9181]
- [Removed support for the `x86_64-rumprun-netbsd` target.][82594]
- [Deprecated the `x86_64-sun-solaris` target in favor of `x86_64-pc-solaris`.]
  [82216]
- [Rustdoc now only accepts `,`, ` `, and `\t` as delimiters for specifying
  languages in code blocks.][78429]
- [Rustc now catches more cases of `pub_use_of_private_extern_crate`][80763]
- [Changes in how proc macros handle whitespace may lead to panics when used
  with older `proc-macro-hack` versions. A `cargo update` should be sufficient
  to fix this in all cases.][84136]

[84136]: rust-lang/rust#84136
[80763]: rust-lang/rust#80763
[82166]: rust-lang/rust#82166
[82121]: rust-lang/rust#82121
[81879]: rust-lang/rust#81879
[82261]: rust-lang/rust#82261
[82218]: rust-lang/rust#82218
[82216]: rust-lang/rust#82216
[82202]: rust-lang/rust#82202
[81855]: rust-lang/rust#81855
[81766]: rust-lang/rust#81766
[81744]: rust-lang/rust#81744
[81611]: rust-lang/rust#81611
[81479]: rust-lang/rust#81479
[81451]: rust-lang/rust#81451
[81356]: rust-lang/rust#81356
[80962]: rust-lang/rust#80962
[80553]: rust-lang/rust#80553
[80527]: rust-lang/rust#80527
[79519]: rust-lang/rust#79519
[79423]: rust-lang/rust#79423
[79208]: rust-lang/rust#79208
[78429]: rust-lang/rust#78429
[82733]: rust-lang/rust#82733
[82594]: rust-lang/rust#82594
[cargo/9181]: rust-lang/cargo#9181
[`char::MAX`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.MAX
[`char::REPLACEMENT_CHARACTER`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.REPLACEMENT_CHARACTER
[`char::UNICODE_VERSION`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.UNICODE_VERSION
[`char::decode_utf16`]: https://doc.rust-lang.org/std/primitive.char.html#method.decode_utf16
[`char::from_u32`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32
[`char::from_u32_unchecked`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32_unchecked
[`char::from_digit`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_digit
[`Peekable::next_if`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if
[`Peekable::next_if_eq`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if_eq
[`Arguments::as_str`]: https://doc.rust-lang.org/stable/std/fmt/struct.Arguments.html#method.as_str
[`str::split_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_once
[`str::rsplit_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.rsplit_once
[`slice::partition_point`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.partition_point
[`char::len_utf8`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf8
[`char::len_utf16`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf16
[`char::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_uppercase
[`char::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_lowercase
[`char::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.eq_ignore_ascii_case
[`u8::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_uppercase
[`u8::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_lowercase
[`u8::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.eq_ignore_ascii_case
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this pull request May 31, 2021
Pkgsrc changes:
 * Bump bootstrap kit version to 1.51.0.
 * Adjust patches as needed.
 * Update checksum adjustments.
 * Fix syntax error in commands adjusting libserde_derive for Darwin

Upstream changes:

Version 1.52.1 (2021-05-10)
============================

This release disables incremental compilation, unless the user has explicitly
opted in via the newly added RUSTC_FORCE_INCREMENTAL=1 environment variable.

This is due to the widespread, and frequently occuring, breakage encountered by
Rust users due to newly enabled incremental verification in 1.52.0. Notably,
Rust users **should** upgrade to 1.52.0 or 1.52.1: the bugs that are detected by
newly added incremental verification are still present in past stable versions,
and are not yet fixed on any channel. These bugs can lead to miscompilation of
Rust binaries.

These problems only affect incremental builds, so release builds with Cargo
should not be affected unless the user has explicitly opted into incremental.
Debug and check builds are affected.

See [84970] for more details.

[84970]: rust-lang/rust#84970

Version 1.52.0 (2021-05-06)
============================

Language
--------
- [Added the `unsafe_op_in_unsafe_fn` lint, which checks whether
  the unsafe code in an `unsafe fn` is wrapped in a `unsafe`
  block.][79208] This lint is allowed by default, and may become
  a warning or hard error in a future edition.

- [You can now cast mutable references to arrays to a pointer of
  the same type as the element.][81479]

Compiler
--------
- [Upgraded the default LLVM to LLVM 12.][81451]

Added tier 3\* support for the following targets.

- [`s390x-unknown-linux-musl`][82166]
- [`riscv32gc-unknown-linux-musl` & `riscv64gc-unknown-linux-musl`][82202]
- [`powerpc-unknown-openbsd`][82733]

\* Refer to Rust's [platform support page][platform-support-doc] for more
information on Rust's tiered platform support.

Libraries
---------
- [`OsString` now implements `Extend` and `FromIterator`.][82121]
- [`cmp::Reverse` now has `#[repr(transparent)]` representation.][81879]
- [`Arc<impl Error>` now implements `error::Error`.][80553]
- [All integer division and remainder operations are now `const`.][80962]

Stabilised APIs
-------------
- [`Arguments::as_str`]
- [`char::MAX`]
- [`char::REPLACEMENT_CHARACTER`]
- [`char::UNICODE_VERSION`]
- [`char::decode_utf16`]
- [`char::from_digit`]
- [`char::from_u32_unchecked`]
- [`char::from_u32`]
- [`slice::partition_point`]
- [`str::rsplit_once`]
- [`str::split_once`]

The following previously stable APIs are now `const`.

- [`char::len_utf8`]
- [`char::len_utf16`]
- [`char::to_ascii_uppercase`]
- [`char::to_ascii_lowercase`]
- [`char::eq_ignore_ascii_case`]
- [`u8::to_ascii_uppercase`]
- [`u8::to_ascii_lowercase`]
- [`u8::eq_ignore_ascii_case`]

Rustdoc
-------
- [Rustdoc lints are now treated as a tool lint, meaning that
  lints are now prefixed with `rustdoc::` (e.g.
  `#[warn(rustdoc::non_autolinks)]`).][80527] Using the old style
  is still allowed, and will become a warning in a future release.
- [Rustdoc now supports argument files.][82261]
- [Rustdoc now generates smart punctuation for documentation.][79423]
- [You can now use "task lists" in Rustdoc Markdown.][81766] E.g.
  ```markdown
  - [x] Complete
  - [ ] Todo
  ```

Misc
----
- [You can now pass multiple filters to tests.][81356] E.g.
  `cargo test -- foo bar` will run all tests that match `foo` and `bar`.
- [Rustup now distributes PDB symbols for the `std` library on Windows,
  allowing you to see `std` symbols when debugging.][82218]

Internal Only
-------------
These changes provide no direct user facing benefits, but represent significant
improvements to the internals and overall performance of rustc and
related tools.

- [Check the result cache before the DepGraph when ensuring queries][81855]
- [Try fast_reject::simplify_type in coherence before doing full check][81744]
- [Only store a LocalDefId in some HIR nodes][81611]
- [Store HIR attributes in a side table][79519]

Compatibility Notes
-------------------
- [Cargo build scripts are now forbidden from setting
  `RUSTC_BOOTSTRAP`.][cargo/9181]
- [Removed support for the `x86_64-rumprun-netbsd` target.][82594]
- [Deprecated the `x86_64-sun-solaris` target in favor of
  `x86_64-pc-solaris`.][82216]
- [Rustdoc now only accepts `,`, ` `, and `\t` as delimiters for specifying
  languages in code blocks.][78429]
- [Rustc now catches more cases of `pub_use_of_private_extern_crate`][80763]
- [Changes in how proc macros handle whitespace may lead to panics
  when used with older `proc-macro-hack` versions. A `cargo update` should
  be sufficient to fix this in all cases.][84136]

[84136]: rust-lang/rust#84136
[80763]: rust-lang/rust#80763
[82166]: rust-lang/rust#82166
[82121]: rust-lang/rust#82121
[81879]: rust-lang/rust#81879
[82261]: rust-lang/rust#82261
[82218]: rust-lang/rust#82218
[82216]: rust-lang/rust#82216
[82202]: rust-lang/rust#82202
[81855]: rust-lang/rust#81855
[81766]: rust-lang/rust#81766
[81744]: rust-lang/rust#81744
[81611]: rust-lang/rust#81611
[81479]: rust-lang/rust#81479
[81451]: rust-lang/rust#81451
[81356]: rust-lang/rust#81356
[80962]: rust-lang/rust#80962
[80553]: rust-lang/rust#80553
[80527]: rust-lang/rust#80527
[79519]: rust-lang/rust#79519
[79423]: rust-lang/rust#79423
[79208]: rust-lang/rust#79208
[78429]: rust-lang/rust#78429
[82733]: rust-lang/rust#82733
[82594]: rust-lang/rust#82594
[cargo/9181]: rust-lang/cargo#9181
[`char::MAX`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.MAX
[`char::REPLACEMENT_CHARACTER`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.REPLACEMENT_CHARACTER
[`char::UNICODE_VERSION`]: https://doc.rust-lang.org/std/primitive.char.html#associatedconstant.UNICODE_VERSION
[`char::decode_utf16`]: https://doc.rust-lang.org/std/primitive.char.html#method.decode_utf16
[`char::from_u32`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32
[`char::from_u32_unchecked`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_u32_unchecked
[`char::from_digit`]: https://doc.rust-lang.org/std/primitive.char.html#method.from_digit
[`Peekable::next_if`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if
[`Peekable::next_if_eq`]: https://doc.rust-lang.org/stable/std/iter/struct.Peekable.html#method.next_if_eq
[`Arguments::as_str`]: https://doc.rust-lang.org/stable/std/fmt/struct.Arguments.html#method.as_str
[`str::split_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.split_once
[`str::rsplit_once`]: https://doc.rust-lang.org/stable/std/primitive.str.html#method.rsplit_once
[`slice::partition_point`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.partition_point
[`char::len_utf8`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf8
[`char::len_utf16`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.len_utf16
[`char::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_uppercase
[`char::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_ascii_lowercase
[`char::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.char.html#method.eq_ignore_ascii_case
[`u8::to_ascii_uppercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_uppercase
[`u8::to_ascii_lowercase`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ascii_lowercase
[`u8::eq_ignore_ascii_case`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.eq_ignore_ascii_case
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 4, 2021
Warn when `rustdoc::` group is omitted from lint names

When rustdoc lints were first made a tool lint, they gave an unconditional warning when you used the original name:
```
warning: lint `broken_intra_doc_links` has been renamed to `rustdoc::broken_intra_doc_links`
  --> $DIR/renamed-lint-still-applies.rs:2:9
   |
LL | #![deny(broken_intra_doc_links)]
   |         ^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::broken_intra_doc_links`
   |
   = note: `#[warn(renamed_and_removed_lints)]` on by default
```
That was reverted in rust-lang#83203 because adding `rustdoc::x` lints would cause the code to break on old versions of the compiler (due to rust-lang#66079 (comment), "fixed" in rust-lang#83216 in the sense that you can now opt-in to not breaking on nightly, which is not ideal but `register_tool` is a long way from stabilizing). Since rust-lang#80527 is now on 1.52.0 stable, we can re-enable the warning. For nightly users, they can change immediately and still have their code work on stable; for stable users, they can change their code in 12 weeks and still have it work up to 3 releases back (about 18 weeks). That seems reasonable to me.

r? `@Manishearth` cc `@rust-lang/rustdoc`
tesaguri added a commit to tesaguri/oauth1-request-rs that referenced this pull request Nov 28, 2021
The lint has been renamed to `rustdoc::broken_intra_doc_links` and also
it is now a warn-by-default so it makes less sense to enable it in the
source code.

cf. <rust-lang/rust#80527>
tesaguri added a commit to tesaguri/oauth1-request-rs that referenced this pull request Nov 28, 2021
The lint has been renamed to `rustdoc::broken_intra_doc_links` and also
it is now a warn-by-default so it makes less sense to enable it in the
source code.

cf. <rust-lang/rust#80527>
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Rustdoc should never silence lints from the rustdoc lint group