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Rename the compiler files containing struct diagnostics to diagnostics.rs

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#1003 In rust-lang/compiler-team;

· JonathanBrouwer opened on Jun 17, 2026

Single-byte counter support in coverage instrumentation

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#1002 In rust-lang/compiler-team;

· woodruffw opened on Jun 15, 2026

Promote wasm32-wasip3 to Tier 2

disposition-mergeThe FCP starter wants to merge thisThe FCP starter wants to merge this

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

proposed-final-comment-periodAn FCP has been started, cast your votes and raise concernsAn FCP has been started, cast your votes and raise concerns

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Status: Open.

#1001 In rust-lang/compiler-team;

· alexcrichton opened on Jun 12, 2026

Deny todo!() in tidy

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#999 In rust-lang/compiler-team;

· jdonszelmann opened on Jun 10, 2026

{cwd} placeholder in --remap-path-prefix

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#998 In rust-lang/compiler-team;

· ashi009 opened on Jun 4, 2026

Desugar async blocks in HIR instead of MIR

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

has-concernsThere are active concernsThere are active concerns

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

T-compilerAdd this label so rfcbot knows to poll the compiler teamAdd this label so rfcbot knows to poll the compiler team

Status: Open.

#997 In rust-lang/compiler-team;

· cjgillot opened on Jun 1, 2026

Create a new Tier 3 target: s390x-ibm-zos

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#992 In rust-lang/compiler-team;

· amy-kwan opened on May 26, 2026

Add -Zglobal-target-cpu

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#991 In rust-lang/compiler-team;

· kulst opened on May 18, 2026

Create new Tier 3 targets: powerpc64le-unknown-none-softfloat, powerpc64-unknown-none-softfloat, powerpc-unknown-none-softfloat

final-comment-periodThe FCP has started, most (if not all) team members are in agreementThe FCP has started, most (if not all) team members are in agreement

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

T-compilerAdd this label so rfcbot knows to poll the compiler teamAdd this label so rfcbot knows to poll the compiler team

Status: Open.

#988 In rust-lang/compiler-team;

· amy-kwan opened on Apr 27, 2026

Promotes 5 Thumb-mode bare-metal Arm targets to Tier 2

disposition-mergeThe FCP starter wants to merge thisThe FCP starter wants to merge this

finished-final-comment-periodThe FCP has finished, action upon the disposition label needs to be takenThe FCP has finished, action upon the disposition label needs to be taken

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#985 In rust-lang/compiler-team;

· cezarbbb opened on Apr 25, 2026

group target modifier options under -T

major-changeA proposal to make a major change to rustcA proposal to make a major change to rustc

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Status: Open.

#980 In rust-lang/compiler-team;

· davidtwco opened on Mar 31, 2026

Implement LLVM-backed MC/DC instrumentation in the compiler

meeting-proposal

Status: Open.

#979 In rust-lang/compiler-team;

· RenjiSann opened on Mar 30, 2026