Update derive_utils to 0.9.1

Author: taiki-e

derive/Cargo.toml

@@ -16,7 +16,7 @@ This library provides an attribute macro like a wrapper of `#[derive]`, implemen
 proc-macro = true
 
 [dependencies]
-derive_utils = { version = "0.9" }
+derive_utils = { version = "0.9.1" }
 lazy_static = "1.2"
 proc-macro2 = "1.0"
 quote = "1.0"

tests/ui/enum_derive/variant.rs

@@ -35,12 +35,6 @@ enum Enum6<A> {
 }
 
 #[enum_derive(Clone)]
-enum Enum7<A> {
-    //~^ ERROR cannot be implemented for enums with less than two variants
-    A(A),
-}
-
-#[enum_derive(Clone)]
-enum Enum8 {} //~ ERROR cannot be implemented for enums with less than two variants
+enum Enum7 {} //~ ERROR cannot be implemented for enums with less than two variants
 
 fn main() {}

tests/ui/enum_derive/variant.stderr

@@ -28,20 +28,11 @@ error: a variant with multiple fields is not supported
 34 |     B(A, B), //~ ERROR a variant with multiple fields is not supported
    |      ^^^^^^
 
-error: cannot be implemented for enums with less than two variants
+error: cannot be implemented for enums with no variants
   --> $DIR/variant.rs:38:1
    |
-38 | / enum Enum7<A> {
-39 | |     //~^ ERROR cannot be implemented for enums with less than two variants
-40 | |     A(A),
-41 | | }
-   | |_^
-
-error: cannot be implemented for enums with less than two variants
-  --> $DIR/variant.rs:44:1
-   |
-44 | enum Enum8 {} //~ ERROR cannot be implemented for enums with less than two variants
+38 | enum Enum7 {} //~ ERROR cannot be implemented for enums with less than two variants
    | ^^^^^^^^^^^^^
 
-error: aborting due to 7 previous errors
+error: aborting due to 6 previous errors