Update ui tests to 2018 edition

test_suite/tests/ui/duplicate-attribute/rename-and-ser.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/rename-and-ser.stderr

@@ -1,7 +1,7 @@
 error: unknown serde field attribute `serialize`
- --> $DIR/rename-and-ser.rs:6:27
+ --> $DIR/rename-and-ser.rs:5:27
   |
-6 |     #[serde(rename = "x", serialize = "y")]
+5 |     #[serde(rename = "x", serialize = "y")]
   |                           ^^^^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/rename-rename-de.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/rename-rename-de.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `rename`
- --> $DIR/rename-rename-de.rs:7:13
+ --> $DIR/rename-rename-de.rs:6:13
   |
-7 |     #[serde(rename(deserialize = "y"))]
+6 |     #[serde(rename(deserialize = "y"))]
   |             ^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/rename-ser-rename-ser.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/rename-ser-rename-ser.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `rename`
- --> $DIR/rename-ser-rename-ser.rs:6:38
+ --> $DIR/rename-ser-rename-ser.rs:5:38
   |
-6 |     #[serde(rename(serialize = "x"), rename(serialize = "y"))]
+5 |     #[serde(rename(serialize = "x"), rename(serialize = "y"))]
   |                                      ^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/rename-ser-rename.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/rename-ser-rename.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `rename`
- --> $DIR/rename-ser-rename.rs:7:13
+ --> $DIR/rename-ser-rename.rs:6:13
   |
-7 |     #[serde(rename = "y")]
+6 |     #[serde(rename = "y")]
   |             ^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/rename-ser-ser.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/rename-ser-ser.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `rename`
- --> $DIR/rename-ser-ser.rs:6:37
+ --> $DIR/rename-ser-ser.rs:5:37
   |
-6 |     #[serde(rename(serialize = "x", serialize = "y"))]
+5 |     #[serde(rename(serialize = "x", serialize = "y"))]
   |                                     ^^^^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/two-rename-ser.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/two-rename-ser.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `rename`
- --> $DIR/two-rename-ser.rs:7:13
+ --> $DIR/two-rename-ser.rs:6:13
   |
-7 |     #[serde(rename(serialize = "y"))]
+6 |     #[serde(rename(serialize = "y"))]
   |             ^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/duplicate-attribute/with-and-serialize-with.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 struct S {

test_suite/tests/ui/duplicate-attribute/with-and-serialize-with.stderr

@@ -1,7 +1,7 @@
 error: duplicate serde attribute `serialize_with`
- --> $DIR/with-and-serialize-with.rs:6:25
+ --> $DIR/with-and-serialize-with.rs:5:25
   |
-6 |     #[serde(with = "w", serialize_with = "s")]
+5 |     #[serde(with = "w", serialize_with = "s")]
   |                         ^^^^^^^^^^^^^^
 
 error: aborting due to previous error