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Draft release notes for 1.91
#147010 ·
Mark-Simulacrum
opened
on Sep 25, 2025
19
Issues
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state
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open
label
:
A-parallel-compiler
state:open label:A-parallel-compiler
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Open
Closed
<code>error: queries overflow the depth limit!</code> for the parallel frontend
A-macros
Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)
Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..)
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-type-system
Area: Type system
Area: Type system
C-bug
Category: This is a bug.
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant 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.
#146616
In rust-lang/rust;
·
ywxt
opened
on Sep 16, 2025
STATUS_ILLEGAL_INSTRUCTION for parallel-rustc <code>export-symbols-deadlock-issue-118205-2.rs</code> on x86_64-pc-windows-gnu
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-spurious
Area: Spurious failures in builds (spuriously == for no apparent reason)
Area: Spurious failures in builds (spuriously == for no apparent reason)
C-bug
Category: This is a bug.
Category: This is a bug.
I-flaky-test
Issue: A test is flaky/unreliable/spuriously fails
Issue: A test is flaky/unreliable/spuriously fails
O-windows-gnu
Toolchain: GNU, Operating system: Windows
Toolchain: GNU, Operating system: Windows
T-compiler
Relevant 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.
#145927
In rust-lang/rust;
·
ehuss
opened
on Aug 27, 2025
Add the parallel front-end test suite
A-compiletest
Area: The compiletest test runner
Area: The compiletest test runner
A-meta
Area: Issues & PRs about the rust-lang/rust repository itself
Area: Issues & PRs about the rust-lang/rust repository itself
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-testsuite
Area: The testsuite used to check the correctness of rustc
Area: The testsuite used to check the correctness of rustc
S-waiting-on-MCP
Status: PR has a compiler MCP and is waiting for the compiler MCP to complete.
Status: PR has a compiler MCP and is waiting for the compiler MCP to complete.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-compiler
Relevant 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/rust
number 143953
#143953
In rust-lang/rust;
·
ywxt
opened
on Jul 15, 2025
ICE: <code>queries overflow the depth limit</code> , ice when trying to get query map
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
C-bug
Category: This is a bug.
Category: This is a bug.
F-async_drop
`#![feature(async_drop)]`
`#![feature(async_drop)]`
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant 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.
#142159
In rust-lang/rust;
·
matthiaskrgr
opened
on Jun 7, 2025
ICE compiler/rustc_query_system/src/dep_graph/query.rs index out of bounds
A-incr-comp
Area: Incremental compilation
Area: Incremental compilation
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
C-bug
Category: This is a bug.
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
S-has-mcve
Status: A Minimal Complete and Verifiable Example has been found for this issue
Status: A Minimal Complete and Verifiable Example has been found for this issue
T-compiler
Relevant 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.
#142152
In rust-lang/rust;
·
matthiaskrgr
opened
on Jun 7, 2025
ICE: parallel: <code>internal error: entered unreachable code</code>
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
C-bug
Category: This is a bug.
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant 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.
#142064
In rust-lang/rust;
·
matthiaskrgr
opened
on Jun 5, 2025
diagnostics flipflopping with Zthreads
A-diagnostics
Area: Messages for errors, warnings, and lints
Area: Messages for errors, warnings, and lints
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-reproducibility
Area: Reproducible / deterministic builds
Area: Reproducible / deterministic builds
C-bug
Category: This is a bug.
Category: This is a bug.
T-compiler
Relevant 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.
#142063
In rust-lang/rust;
·
matthiaskrgr
opened
on Jun 5, 2025
A dep graph node (mir_drops_elaborated_and_const_checked) does not have an unique index
A-incr-comp
Area: Incremental compilation
Area: Incremental compilation
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-query-system
Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)
Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)
C-bug
Category: This is a bug.
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
S-needs-repro
Status: This issue has no reproduction and needs a reproduction to make progress.
Status: This issue has no reproduction and needs a reproduction to make progress.
T-compiler
Relevant 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.
#141540
In rust-lang/rust;
·
dfaust
opened
on May 25, 2025
parallel rustc: static mut refs not reproducible
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-reproducibility
Area: Reproducible / deterministic builds
Area: Reproducible / deterministic builds
C-bug
Category: This is a bug.
Category: This is a bug.
T-compiler
Relevant 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.
#140413
In rust-lang/rust;
·
matthiaskrgr
opened
on Apr 28, 2025
ICE when using a generic const expression in a where clause
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
C-bug
Category: This is a bug.
Category: This is a bug.
F-generic_const_exprs
`#![feature(generic_const_exprs)]`
`#![feature(generic_const_exprs)]`
I-cycle
Issue: A query cycle occurred while none was expected
Issue: A query cycle occurred while none was expected
P-low
Low priority
Low priority
requires-incomplete-features
This issue requires the use of incomplete features.
This issue requires the use of incomplete features.
T-compiler
Relevant 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.
#134978
In rust-lang/rust;
·
jullanggit
opened
on Dec 31, 2024
Add parallel front end robustness test to ui tests
A-compiletest
Area: The compiletest test runner
Area: The compiletest test runner
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
A-query-system
Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)
Area: The rustc query system (https://rustc-dev-guide.rust-lang.org/query.html)
A-test-infra
Area: test infrastructure (may span bootstrap/compiletest/more)
Area: test infrastructure (may span bootstrap/compiletest/more)
A-testsuite
Area: The testsuite used to check the correctness of rustc
Area: The testsuite used to check the correctness of rustc
S-waiting-on-author
Status: This is awaiting some action (such as code changes or more information) from the author.
Status: This is awaiting some action (such as code changes or more information) from the author.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-compiler
Relevant 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.
WG-trait-system-refactor
The Rustc Trait System Refactor Initiative (-Znext-solver)
The Rustc Trait System Refactor Initiative (-Znext-solver)
Status: Open (in progress).
rust-lang/rust
number 132051
#132051
In rust-lang/rust;
·
SparrowLii
opened
on Oct 23, 2024
deadlock detected as we're unable to find a query cycle to break
A-parallel-compiler
Area: parallel compiler
Area: parallel compiler
C-bug
Category: This is a bug.
Category: This is a bug.
E-needs-mcve
Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example
Call for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example
F-coroutines
`#![feature(coroutines)]`
`#![feature(coroutines)]`
I-cycle
Issue: A query cycle occurred while none was expected
Issue: A query cycle occurred while none was expected
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant 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.
#129912
In rust-lang/rust;
·
matthiaskrgr
opened
on Sep 2, 2024
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