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# System prepended metadata

title: Backlog Bonanza 2022-06-29

---

# Backlog Bonanza 2022-06-29

[GitHub query](https://github.com/rust-lang/rust/issues?q=is%3Aopen+label%3AC-tracking-issue+label%3AT-lang)

## What are we DOING?

* Take things that have been unstable for a while and "disposition them".
* Goal: Everything that is nightly only has one or more of the following labels, indicating the blocker(s) to stabilizing it:
    * S-tracking-ready-to-stabilize: Needs a stabilization PR (good to go :train:)
    * S-tracking-needs-to-bake: Needs time to bake (set a date? other criteria?)
    * S-tracking-impl-incomplete: Not code complete or blocking bugs
    * S-tracking-unimplemented: Implementation not begun
    * S-tracking-design-concerns: Blocking design concerns
        * This might be "doesn't quite seem to deliver value we hoped for" or "something doesn't feel right"
    * S-tracking-perma-unstable
        * Internal implementation detail of rustc, stdlib
    * S-tracking-needs-investigation

Attendance: Josh, Scott, Mark

## Tracking issue for fallback of diverging expressions to the never_type (!) #65992 

Link: https://github.com/rust-lang/rust/issues/65992

Closing in favor of https://github.com/rust-lang/rust/issues/35121

## https://github.com/rust-lang/rust/issues/66079

Design concerns, may want to support via Cargo.toml and rustc command line.

## https://github.com/rust-lang/rust/issues/66080

Closing in favor of https://github.com/rust-lang/rust/issues/66079

##  Tracking issue for panics in mem::uninitialized/zeroed #66151 

Re-assigned to libs-api.

##  Tracking issue for handle_alloc_error defaulting to panic (for no_std + liballoc) #66741 

Mark is pretty confident this is still not fully implemented.

## Tracking issue for const_eval_limit: configurable, per-item instruction limit for CTFE #67217 

https://github.com/rust-lang/rust/issues/93481

## Half-open range patterns: https://github.com/rust-lang/rust/issues/67264

Design concerns (Mark to summarize)

## ~const: https://github.com/rust-lang/rust/issues/67792

https://github.com/rust-lang/rust/issues/67792#issuecomment-1170309584

## negative impls



## target_feature 1.1