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Add proc_macro::Group::{set_span_open,set_span_close}

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#800 In rust-lang/libs-team;

· Noratrieb opened on May 30, 2026

Add Box::as_non_null

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#799 In rust-lang/libs-team;

· theemathas opened on May 30, 2026

ACP: Add a fallible version of Vec

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#798 In rust-lang/libs-team;

· ChrisDenton opened on May 30, 2026

Bound infallible methods on alloc types behind A: InfallibleAllocator

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#797 In rust-lang/libs-team;

· pitust opened on May 28, 2026

Constant and/or function for the implicit digit of the mantissa for floats

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#796 In rust-lang/libs-team;

· Apersoma opened on May 27, 2026

Bit-masks for the payload and signal bit of floating point NaN values

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#795 In rust-lang/libs-team;

· Apersoma opened on May 27, 2026

ACP: Rename atomic::compiler_fence to atomic::signal_fence

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#794 In rust-lang/libs-team;

· RalfJung opened on May 26, 2026

ACP: Add methods to get reference counts from raw pointers to Arc\Rc

ACP-acceptedAPI Change Proposal is accepted (seconded with no objections)API Change Proposal is accepted (seconded with no objections)

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#792 In rust-lang/libs-team;

· loreball opened on May 14, 2026

ACP: std::time::StopWatch

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

S-blockedStatus: Blocked on another featureStatus: Blocked on another feature

T-libs-api

Status: Open.

#789 In rust-lang/libs-team;

· ChrisDenton opened on May 7, 2026

Add missing integer casts

ACP-acceptedAPI Change Proposal is accepted (seconded with no objections)API Change Proposal is accepted (seconded with no objections)

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#788 In rust-lang/libs-team;

· orlp opened on May 6, 2026

Add fN::replace_nan

ACP-acceptedAPI Change Proposal is accepted (seconded with no objections)API Change Proposal is accepted (seconded with no objections)

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#787 In rust-lang/libs-team;

· orlp opened on May 6, 2026

std::ops::RangeBounds::{start,end}_bound_inclusive

api-change-proposalA proposal to add or alter unstable APIs in the standard librariesA proposal to add or alter unstable APIs in the standard libraries

T-libs-api

Status: Open.

#786 In rust-lang/libs-team;

· schuelermine opened on May 5, 2026