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1.92 regression in PyO3: unable to determine layout for ... because ... cannot be normalized

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

A-layoutArea: Memory layout of typesArea: Memory layout of types

A-mir-optArea: MIR optimizationsArea: MIR optimizations

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

A-trait-systemArea: Trait systemArea: Trait system

C-bugCategory: This is a bug.Category: This is a bug.

P-criticalCritical priorityCritical priority

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

regression-from-stable-to-nightlyPerformance or correctness regression from stable to nightly.Performance or correctness regression from stable to nightly.

S-has-bisectionStatus: A bisection has been found for this issueStatus: A bisection has been found for this issue

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#149081 In rust-lang/rust;

· theemathas opened on Nov 19, 2025

· 

1.92.0

Tracking issue for release notes of #65816: Tracking issue for <code>vec_into_raw_parts</code>

A-collectionsArea: `std::collections`Area: `std::collections`

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#148824 In rust-lang/rust;

· rustbot opened on Nov 11, 2025

· 

1.93.0

Tracking issue for release notes of #63569: Tracking issue for <code>#![feature(maybe_uninit_slice)]</code>

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

A-sliceArea: `[T]`Area: `[T]`

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#148385 In rust-lang/rust;

· rustbot opened on Nov 2, 2025

Tracking issue for release notes of #79995: Tracking Issue for maybe_uninit_write_slice

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

Status: Open.

#148366 In rust-lang/rust;

· rustbot opened on Nov 1, 2025

std::pointer::Nonnull should guarantee ABI compatibility for non-null pointer values

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

T-opsemRelevant to the opsem teamRelevant to the opsem team

Status: Open.

#145989 In rust-lang/rust;

· jacobsa opened on Aug 29, 2025

<code>&amp;raw const</code> can sometimes do temporary lifetime extension

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

A-temporary-lifetime-extensionArea: temporary lifetime extensionArea: temporary lifetime extension

C-bugCategory: This is a bug.Category: This is a bug.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#145813 In rust-lang/rust;

· theemathas opened on Aug 24, 2025

Tracking Issue for breaking lifetime changing raw pointer casts of trait objects

A-dyn-traitArea: trait objects, vtable layoutArea: trait objects, vtable layout

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-arbitrary_self_types`#![feature(arbitrary_self_types)]``#![feature(arbitrary_self_types)]`

F-derive_coerce_pointeeFeature: RFC 3621's oft-renamed implementationFeature: RFC 3621's oft-renamed implementation

T-langRelevant to the language teamRelevant to the language team

Status: Open.

#141402 In rust-lang/rust;

· BoxyUwU opened on May 22, 2025

dubious <code>&amp;raw const|mut value</code> compile error

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-opsemRelevant to the opsem teamRelevant to the opsem team

Status: Open.

#139156 In rust-lang/rust;

· Paladynee opened on Mar 30, 2025

Document the contextual keyword <code>raw</code>

A-docsArea: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Documentation for any part of the project, including the compiler, standard library, and tools

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

T-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

Status: Open.

#134447 In rust-lang/rust;

· CrazyboyQCD opened on Dec 18, 2024

unsafe { &amp;mut *x } vs &amp;mut unsafe { *x }

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.Diagnostics: An error or lint that doesn't give enough information about the problem at hand.

Status: Open.

#132063 In rust-lang/rust;

· hkBst opened on Oct 23, 2024

Can't cast a pointer of a trait object newtype to a pointer of that trait object.

A-dyn-traitArea: trait objects, vtable layoutArea: trait objects, vtable layout

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#128625 In rust-lang/rust;

· theemathas opened on Aug 4, 2024

Tracking issue for future-incompatibility lint <code>ptr_cast_add_auto_to_object</code>

A-dyn-traitArea: trait objects, vtable layoutArea: trait objects, vtable layout

A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.

A-raw-pointersArea: raw pointers, MaybeUninit, NonNullArea: raw pointers, MaybeUninit, NonNull

C-future-incompatibilityCategory: Future-incompatibility lintsCategory: Future-incompatibility lints

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

F-arbitrary_self_types`#![feature(arbitrary_self_types)]``#![feature(arbitrary_self_types)]`

F-derive_coerce_pointeeFeature: RFC 3621's oft-renamed implementationFeature: RFC 3621's oft-renamed implementation

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#127323 In rust-lang/rust;

· WaffleLapkin opened on Jul 4, 2024