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const-eval: always do mem-to-mem copies if there might be padding involved

I-lang-nominatedNominated for discussion during a lang team meeting.Nominated for discussion during a lang team meeting.

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

needs-fcpThis change is insta-stable, or significant enough to need a team FCP to proceed.This change is insta-stable, or significant enough to need a team FCP to proceed.

P-lang-drag-1Lang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-langLang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang

perf-regressionPerformance regression.Performance regression.

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater run to be completed.

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 (in progress).

rust-lang/rustnumber 148967

#148967 In rust-lang/rust;

· RalfJung opened on Nov 15, 2025

crater experiment: do not promote function calls in const/static items

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater run to be completed.

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: Draft (not ready).

rust-lang/rustnumber 148952

#148952 In rust-lang/rust;

· RalfJung opened on Nov 14, 2025

resolve: Consider all traits from ambiguous glob imports to be in scope

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater run to be completed.

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 (in progress).

rust-lang/rustnumber 148946

#148946 In rust-lang/rust;

· petrochenkov opened on Nov 14, 2025

Consider <code>Result&lt;T, Uninhabited&gt;</code> and <code>ControlFlow&lt;Uninhabited, T&gt;</code> to be equivalent to <code>T</code> for must use lint

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.

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

L-unused_must_useLint: unused_must_useLint: unused_must_use

needs-fcpThis change is insta-stable, or significant enough to need a team FCP to proceed.This change is insta-stable, or significant enough to need a team FCP to proceed.

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.

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater run to be completed.

S-waiting-on-t-langStatus: Awaiting decision from T-langStatus: Awaiting decision from T-lang

T-langRelevant to the language teamRelevant to the language team

Status: Open (in progress).

rust-lang/rustnumber 148214

#148214 In rust-lang/rust;

· WaffleLapkin opened on Oct 28, 2025

Temporary lifetime extension for blocks

disposition-mergeThis issue / PR is in PFCP or FCP with a disposition to merge it.This issue / PR is in PFCP or FCP with a disposition to merge it.

finished-final-comment-periodThe final comment period is finished for this PR / Issue.The final comment period is finished for this PR / Issue.

I-lang-radarItems that are on lang's radar and will need eventual work or consideration.Items that are on lang's radar and will need eventual work or consideration.

needs-fcpThis change is insta-stable, or significant enough to need a team FCP to proceed.This change is insta-stable, or significant enough to need a team FCP to proceed.

perf-regressionPerformance regression.Performance regression.

S-waiting-on-craterStatus: Waiting on a crater run to be completed.Status: Waiting on a crater run to be completed.

T-langRelevant to the language teamRelevant to the language team

to-announceAnnounce this issue on triage meetingAnnounce this issue on triage meeting

Status: Open (in progress).

rust-lang/rustnumber 146098

#146098 In rust-lang/rust;

· dianne opened on Sep 1, 2025