4b94758d2b
Rollup of 7 pull requests Successful merges: - rust-lang/rust#144266 (Supress swapping lhs and rhs in equality suggestion in extern macro ) - rust-lang/rust#147471 (Assert that non-extended temporaries and `super let` bindings have scopes) - rust-lang/rust#147533 (Renumber return local after state transform) - rust-lang/rust#147566 (rewrite outlives placeholder constraints to outlives static when handling opaque types) - rust-lang/rust#147613 (Make logging filters work again by moving EnvFilter into its own layer) - rust-lang/rust#147615 (reduce calls to attr.span() in old doc attr parsing) - rust-lang/rust#147636 (miri subtree update) r? `@ghost` `@rustbot` modify labels: rollup
For high-level intro to how type checking works in rustc, see the type checking chapter of the rustc dev guide.