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[BUG] calling async trait fn gives compiler error 'type annotations needed' when type annotation is already provided

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

D-confusingDiagnostics: Confusing error or lint that should be reworked.Diagnostics: Confusing error or lint that should be reworked.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

Status: Open.

#119893 In rust-lang/rust;

· BaxHugh opened on Jan 12, 2024

Unable to infer fn item to fn ptr coercion when fn ptr nested within more than one level of generics

A-inferenceArea: Type inferenceArea: Type inference

A-type-systemArea: Type systemArea: Type system

C-bugCategory: This is a bug.Category: This is a bug.

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-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: Open.

#119605 In rust-lang/rust;

· collinmay opened on Jan 5, 2024

<code>InferCtxt::region_constraints_added_in_snapshot</code> ignores type outlives obligations

A-inferenceArea: Type inferenceArea: Type inference

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-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: Open.

#118902 In rust-lang/rust;

· aliemjay opened on Dec 13, 2023

Suggest not using method call syntax when type can't be inferred

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

A-inferenceArea: Type inferenceArea: Type inference

A-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`Area: Suggestions generated by the compiler applied by `cargo fix`

D-papercutDiagnostics: An error or lint that needs small tweaks.Diagnostics: An error or lint that needs small tweaks.

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: Open.

#118804 In rust-lang/rust;

· dullbananas opened on Dec 10, 2023

rustc decides variable is of unsized type even when it is clear later it's not

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

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: Open.

#118572 In rust-lang/rust;

· ChayimFriedman2 opened on Dec 3, 2023

error[E0275]: overflow evaluating the requirement <code>&amp;_: IntoIterator</code> does not show a line number

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

E-needs-mcveCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable ExampleCall for participation: This issue has a repro, but needs a Minimal Complete and Verifiable Example

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: Open.

#118476 In rust-lang/rust;

· Folcon opened on Nov 30, 2023

rust should able to infer <code>Array&lt;T&gt;[CONST_START..CONST_END]</code> to type <code>[T; CONST_END - CONST_START]</code> at compile time

A-inferenceArea: Type inferenceArea: Type inference

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

Status: Open.

#117599 In rust-lang/rust;

· loynoir opened on Nov 5, 2023

Ability to infer lifetime of closure argument depends on syntax

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

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: Open.

#117532 In rust-lang/rust;

· sadmac7000 opened on Nov 3, 2023

Why is <code>Deref</code> not triggered when <code>func(x.deref())</code> work.

A-inferenceArea: Type inferenceArea: Type inference

A-type-systemArea: Type systemArea: Type system

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-langRelevant to the language teamRelevant to the language team

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: Open.

#116920 In rust-lang/rust;

· shuyanzhu opened on Oct 19, 2023

Invalid inference in associated types

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

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: Open.

#116613 In rust-lang/rust;

· jflatow opened on Oct 10, 2023

Type identification with (match sth.get_mut()) of collections with structs

A-inferenceArea: Type inferenceArea: Type inference

C-bugCategory: This is a bug.Category: This is a bug.

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: Open.

#115935 In rust-lang/rust;

· GeForceLegend opened on Sep 18, 2023

The type inference for <code>T</code> cannot be done when the matched type has the form of <code>T::Output</code> and the trait is user-defined but it can be done for <code>FnTrait</code>

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

A-inferenceArea: Type inferenceArea: Type inference

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: Open.

#115406 In rust-lang/rust;

· xmh0511 opened on Aug 31, 2023