ast_lowering_generic_type_with_parentheses = parenthesized type parameters may only be used with a `Fn` trait .label = only `Fn` traits may use parentheses ast_lowering_use_angle_brackets = use angle brackets instead ast_lowering_invalid_abi = invalid ABI: found `{$abi}` .label = invalid ABI .help = valid ABIs: {$valid_abis} ast_lowering_assoc_ty_parentheses = parenthesized generic arguments cannot be used in associated type constraints ast_lowering_remove_parentheses = remove these parentheses ast_lowering_misplaced_impl_trait = `impl Trait` only allowed in function and inherent method return types, not in {$position}