Update ui tests to 2018 edition

test_suite/tests/ui/enum-representation/content-no-tag.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 #[serde(content = "c")]

test_suite/tests/ui/enum-representation/content-no-tag.stderr

@@ -1,7 +1,7 @@
 error: #[serde(tag = "...", content = "...")] must be used together
- --> $DIR/content-no-tag.rs:5:9
+ --> $DIR/content-no-tag.rs:4:9
   |
-5 | #[serde(content = "c")]
+4 | #[serde(content = "c")]
   |         ^^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/enum-representation/internal-tuple-variant.rs

@@ -1,5 +1,4 @@
-#[macro_use]
-extern crate serde_derive;
+use serde_derive::Serialize;
 
 #[derive(Serialize)]
 #[serde(tag = "type")]

test_suite/tests/ui/enum-representation/internal-tuple-variant.stderr

@@ -1,7 +1,7 @@
 error: #[serde(tag = "...")] cannot be used with tuple variants
- --> $DIR/internal-tuple-variant.rs:7:5
+ --> $DIR/internal-tuple-variant.rs:6:5
   |
-7 |     Tuple(u8, u8),
+6 |     Tuple(u8, u8),
   |     ^^^^^^^^^^^^^
 
 error: aborting due to previous error

test_suite/tests/ui/enum-representation/untagged-and-adjacent.rs

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

test_suite/tests/ui/enum-representation/untagged-and-adjacent.stderr

@@ -1,19 +1,19 @@
 error: untagged enum cannot have #[serde(tag = "...", content = "...")]
- --> $DIR/untagged-and-adjacent.rs:5:9
+ --> $DIR/untagged-and-adjacent.rs:4:9
   |
-5 | #[serde(untagged)]
+4 | #[serde(untagged)]
   |         ^^^^^^^^
 
 error: untagged enum cannot have #[serde(tag = "...", content = "...")]
- --> $DIR/untagged-and-adjacent.rs:6:9
+ --> $DIR/untagged-and-adjacent.rs:5:9
   |
-6 | #[serde(tag = "t", content = "c")]
+5 | #[serde(tag = "t", content = "c")]
   |         ^^^
 
 error: untagged enum cannot have #[serde(tag = "...", content = "...")]
- --> $DIR/untagged-and-adjacent.rs:6:20
+ --> $DIR/untagged-and-adjacent.rs:5:20
   |
-6 | #[serde(tag = "t", content = "c")]
+5 | #[serde(tag = "t", content = "c")]
   |                    ^^^^^^^
 
 error: aborting due to 3 previous errors

test_suite/tests/ui/enum-representation/untagged-and-content.rs

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

test_suite/tests/ui/enum-representation/untagged-and-content.stderr

@@ -1,13 +1,13 @@
 error: untagged enum cannot have #[serde(content = "...")]
- --> $DIR/untagged-and-content.rs:5:9
+ --> $DIR/untagged-and-content.rs:4:9
   |
-5 | #[serde(untagged)]
+4 | #[serde(untagged)]
   |         ^^^^^^^^
 
 error: untagged enum cannot have #[serde(content = "...")]
- --> $DIR/untagged-and-content.rs:6:9
+ --> $DIR/untagged-and-content.rs:5:9
   |
-6 | #[serde(content = "c")]
+5 | #[serde(content = "c")]
   |         ^^^^^^^
 
 error: aborting due to 2 previous errors

test_suite/tests/ui/enum-representation/untagged-and-internal.rs

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

test_suite/tests/ui/enum-representation/untagged-and-internal.stderr

@@ -1,13 +1,13 @@
 error: enum cannot be both untagged and internally tagged
- --> $DIR/untagged-and-internal.rs:5:9
+ --> $DIR/untagged-and-internal.rs:4:9
   |
-5 | #[serde(untagged)]
+4 | #[serde(untagged)]
   |         ^^^^^^^^
 
 error: enum cannot be both untagged and internally tagged
- --> $DIR/untagged-and-internal.rs:6:9
+ --> $DIR/untagged-and-internal.rs:5:9
   |
-6 | #[serde(tag = "type")]
+5 | #[serde(tag = "type")]
   |         ^^^
 
 error: aborting due to 2 previous errors

test_suite/tests/ui/enum-representation/untagged-struct.rs

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

test_suite/tests/ui/enum-representation/untagged-struct.stderr

@@ -1,7 +1,7 @@
 error: #[serde(untagged)] can only be used on enums
- --> $DIR/untagged-struct.rs:6:1
+ --> $DIR/untagged-struct.rs:5:1
   |
-6 | struct S;
+5 | struct S;
   | ^^^^^^
 
 error: aborting due to previous error