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remove incorrect fast path

beta-acceptedAccepted for backporting to the compiler in the beta channel.Accepted for backporting to the compiler in the beta channel.

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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: Merged (completed).

rust-lang/rustnumber 146919

#146919 In rust-lang/rust;

· by lcnr was closed on Sep 26, 2025

· 

1.91.0

consider item bounds for non-yet-defined opaque types

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 146329

#146329 In rust-lang/rust;

· by lcnr was closed on Sep 12, 2025

· 

1.91.0

<code>-Znext-solver</code>: support non-defining uses in closures

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.

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 145925

#145925 In rust-lang/rust;

· by lcnr was closed on Sep 2, 2025

· 

1.91.0

uniquify root goals during HIR typeck

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 144405

#144405 In rust-lang/rust;

· by lcnr was closed on Jul 31, 2025

· 

1.90.0

<code>apply_member_constraints</code>: fix placeholder check

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.

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

S-waiting-on-fcpStatus: PR is in FCP and is awaiting for FCP to complete.Status: PR is in FCP and is awaiting for FCP to complete.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Merged (completed).

rust-lang/rustnumber 142071

#142071 In rust-lang/rust;

· by lcnr was closed on Aug 15, 2025

· 

1.91.0

add additional <code>TypeFlags</code> fast paths

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 141581

#141581 In rust-lang/rust;

· by lcnr was closed on May 29, 2025

· 

1.89.0

cache <code>param_env</code> canonicalization

A-rustdoc-searchArea: Rustdoc's search featureArea: Rustdoc's search feature

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

T-rustdoc-frontendRelevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 141451

#141451 In rust-lang/rust;

· by lcnr was closed on Jun 10, 2025

· 

1.89.0

borrowck nested items in dead code

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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: Merged (completed).

rust-lang/rustnumber 140590

#140590 In rust-lang/rust;

· by lcnr was closed on May 7, 2025

· 

1.88.0

eagerly compute <code>sub_unification_table</code> again

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 140375

#140375 In rust-lang/rust;

· by lcnr was closed on Sep 8, 2025

· 

1.91.0

eagerly prove WF when resolving fully qualified paths

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 136928

#136928 In rust-lang/rust;

· by lcnr was closed on Feb 14, 2025

· 

1.86.0

fast-reject: add depth check

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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-rustdocRelevant to the rustdoc team, which will review and decide on the PR/issue.Relevant to the rustdoc team, which will review and decide on the PR/issue.

WG-trait-system-refactorThe Rustc Trait System Refactor Initiative (-Znext-solver)The Rustc Trait System Refactor Initiative (-Znext-solver)

Status: Merged (completed).

rust-lang/rustnumber 133566

#133566 In rust-lang/rust;

· by lcnr was closed on Dec 2, 2024

· 

1.85.0

always create <code>DefId</code>s for anon consts

merged-by-borsThis PR was explicitly merged by bors.This PR was explicitly merged by bors.

perf-regressionPerformance regression.Performance regression.

perf-regression-triagedThe performance regression has been triaged.The performance regression has been triaged.

S-waiting-on-borsStatus: Waiting on bors to run and complete tests. Bors will change the label on completion.Status: Waiting on bors to run and complete tests. Bors will change the label on completion.

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: Merged (completed).

rust-lang/rustnumber 133468

#133468 In rust-lang/rust;

· by lcnr was closed on Nov 28, 2024

· 

1.85.0