Where-Clause

Fix E0740: Where Clauses Not Yet Allowed in This Context

Rust intermediate Linux macOS Windows WebAssembly Aug 1, 2026

Rust compiler error E0740 occurs when a where clause is placed in a context where it is not yet supported by the language. This commonly affects const items and other declarations where where clauses are disallowed.

Fix E0364: Trait Bounds on Self Cannot Be Repeated in Where Clause

Rust intermediate Linux macOS Windows WebAssembly Jul 15, 2026

Rust compiler error E0364 occurs when duplicate trait bounds referencing Self are declared in a where clause, which is prohibited by the language specification.