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Rollup of 9 pull requests#154208

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Zalathar wants to merge 20 commits into
rust-lang:mainfrom
Zalathar:rollup-7KSCNHC
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Rollup of 9 pull requests#154208
Zalathar wants to merge 20 commits into
rust-lang:mainfrom
Zalathar:rollup-7KSCNHC

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Successful merges:

r? @ghost

Create a similar rollup

Zalathar and others added 20 commits March 7, 2026 21:16
In CI, the receiver thread can be descheduled for a surprisingly long time, so
there's no guarantee that a timeout actually occurs.
Add a HasAttrs<'tcx, Tcx> trait to rustc_hir that allows find_attr! to
accept DefId, LocalDefId, OwnerId, and HirId directly, instead of
requiring callers to manually fetch the attribute slice first.

The trait is defined in rustc_hir with a generic Tcx parameter to avoid
a dependency cycle (rustc_hir cannot depend on rustc_middle). The four
concrete impls for TyCtxt are in rustc_middle.
Avoid an ICE for:

    struct A;
    impl A<B> {}

The compiler no longer panics and can proceed to emit existing diagnostics.

Adds `tests/ui/missing/undeclared-generic-parameter.rs`.

Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
Now that the tracking issue has been opened, point to it.
- `char::is_cased`
- `char::is_titlecase`
- `char::case`
- `char::to_titlecase`
When a function's documentation has to explain the meaning of nested results
and options, then it is often a good candidate for using a custom result enum
instead.

This commit also renames `DepNodeColorMap::try_mark` to `try_set_color`, to
make it more distinct from the similarly-named `DepGraph::try_mark_green`.

The difference is that `try_mark_green` is a higher-level operation that tries
to determine whether a node _can_ be marked green, whereas `try_set_color` is a
lower-level operation that actually records a color for the node.
This method is only used to initialize the always-red node, which can be done
with `try_set_color` instead.
…Simulacrum

Add APIs for dealing with titlecase

ACP: rust-lang/libs-team#354
Tracking issue: rust-lang#153892

r? libs-api

@rustbot label T-libs -T-libs-api A-unicode

~~The last commit has some insta-stable `PartialEq` impls, therefore: @rustbot label -needs-fcp
Alternatively, I could split those out into a follow-up PR.~~ (Edit: will do in follow-up)
…, r=petrochenkov

Packages as namespaces part 1

Part 1 of rust-lang#152299

r? @petrochenkov
…lacrum

Remove a flaky `got_timeout` assert from two channel tests

In CI, the receiver thread can be descheduled for a surprisingly long time, so there's no guarantee that a timeout actually occurs.

One of these tests actually failed in rust-lang#153387 (comment).

Earlier failures:
- rust-lang#150365 (comment)
- rust-lang#147775 (comment)

---

- Prior art: rust-lang#152878
…id, r=JonathanBrouwer

Simplify find_attr! for HirId usage

Add a `HasAttrs<'tcx, Tcx>` trait to `rustc_hir` that allows `find_attr!` to accept `DefId`, `LocalDefId`, `OwnerId`, and `HirId` directly, instead of requiring callers to manually fetch the attribute slice first.

Before:
  `find_attr!(tcx.hir_attrs(hir_id), SomeAttr)`

After:
  `find_attr!(tcx, hir_id, SomeAttr)`

The trait is defined in `rustc_hir` with a generic `Tcx` parameter to avoid a dependency cycle (`rustc_hir` cannot depend on `rustc_middle`). The four concrete impls for `TyCtxt` are in `rustc_middle`.

Fixes rust-lang#153103
…Brouwer

allow `incomplete_features` in most UI tests

This PR allows the `incomplete_features` lint for all UI tests except for the three directories with the largest number of tests (`traits`, `specialization` and `const-generics`) triggering this lint to keep the size of this PR manageable. The remaining three directories will be handled in followup PRs.

Part of rust-lang#154168.
…ulacrum

Add new alias for Guillaume Gomez email address

I'm switching to a new email account and slowly updating all references to the old one.
…tebank

diagnostics: avoid ICE for undeclared generic parameter in impl

Avoid an ICE for:

    struct A;
    impl A<B> {}

The compiler no longer panics and can proceed to emit existing diagnostics.

Adds `tests/ui/missing/undeclared-generic-parameter.rs`.

Fixes rust-lang#154165 and introduced by rust-lang#152913
…o_the_tracking_issue, r=JonathanBrouwer

Update the tracking issue for #[diagnostic::on_move]

PR rust-lang#150935 has been merged and then I have opened the tracking issue (whoops ?). So this update `compiler/rustc_feature/src/unstable.rs` to point to the right tracking issue.

This is related to the tracking issue rust-lang#154181
Use enums to clarify `DepNodeColorMap` color marking

When a function's documentation has to explain the meaning of nested results and options, then it is often a good candidate for using a custom result enum instead.

This PR also renames `DepNodeColorMap::try_mark` to `try_set_color`, to make it more distinct from the similarly-named `DepGraph::try_mark_green`.

The difference is that `try_mark_green` is a higher-level operation that tries to determine whether a node _can_ be marked green, whereas `try_set_color` is a lower-level operation that actually records a colour for the node.

The updated docs for `try_set_color` also fix a typo: *atomicaly* → *atomically*.

r? nnethercote (or compiler)
@rust-bors rust-bors Bot added the rollup A PR which is a rollup label Mar 22, 2026
@rustbot rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) A-compiletest Area: The compiletest test runner A-meta Area: Issues & PRs about the rust-lang/rust repository itself A-testsuite Area: The testsuite used to check the correctness of rustc S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-clippy Relevant to the Clippy team. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Mar 22, 2026
@Zalathar

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Rollup of everything.

@bors r+ rollup=never p=5

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rust-bors Bot commented Mar 22, 2026

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📌 Commit b7db424 has been approved by Zalathar

It is now in the queue for this repository.

@rust-bors rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 22, 2026
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rust-bors Bot commented Mar 22, 2026

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⌛ Testing commit b7db424 with merge 091254f...

Workflow: https://github.com/rust-lang/rust/actions/runs/23401458950

rust-bors Bot pushed a commit that referenced this pull request Mar 22, 2026
Rollup of 9 pull requests

Successful merges:

 - #122668 (Add APIs for dealing with titlecase)
 - #153312 (Packages as namespaces part 1)
 - #153534 (Remove a flaky `got_timeout` assert from two channel tests)
 - #153582 (Simplify find_attr! for HirId usage)
 - #154174 (allow `incomplete_features` in most UI tests)
 - #154175 (Add new alias for Guillaume Gomez email address)
 - #154182 (diagnostics: avoid ICE for undeclared generic parameter in impl)
 - #154188 (Update the tracking issue for #[diagnostic::on_move])
 - #154201 (Use enums to clarify `DepNodeColorMap` color marking )
@Jules-Bertholet

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Stalled again…

@JonathanBrouwer

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Yielding to the release

@rust-bors rust-bors Bot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Mar 22, 2026
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rust-bors Bot commented Mar 22, 2026

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This pull request was unapproved due to being closed.

Auto build was cancelled due to the PR being closed. Cancelled workflows:

@Zalathar Zalathar deleted the rollup-7KSCNHC branch March 22, 2026 21:37
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A-attributes Area: Attributes (`#[…]`, `#![…]`) A-compiletest Area: The compiletest test runner A-meta Area: Issues & PRs about the rust-lang/rust repository itself A-testsuite Area: The testsuite used to check the correctness of rustc rollup A PR which is a rollup S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-clippy Relevant to the Clippy team. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue.

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10 participants