diff --git a/test_suite/tests/compile-fail/borrow/duplicate_variant.rs b/test_suite/tests/compile-fail/borrow/duplicate_variant.rs
index a501caf1..93f300b4 100644
--- a/test_suite/tests/compile-fail/borrow/duplicate_variant.rs
+++ b/test_suite/tests/compile-fail/borrow/duplicate_variant.rs
@@ -16,7 +16,7 @@ struct Str<'a>(&'a str);
 enum Test<'a> {
     #[serde(borrow)]
     //~^^^ ERROR: duplicate serde attribute `borrow`
-    S(#[serde(borrow)] Str<'a>)
+    S(#[serde(borrow)] Str<'a>),
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/borrow/struct_variant.rs b/test_suite/tests/compile-fail/borrow/struct_variant.rs
index d7341f2c..9264efdc 100644
--- a/test_suite/tests/compile-fail/borrow/struct_variant.rs
+++ b/test_suite/tests/compile-fail/borrow/struct_variant.rs
@@ -16,7 +16,7 @@ struct Str<'a>(&'a str);
 enum Test<'a> {
     #[serde(borrow)]
     //~^^^ ERROR: #[serde(borrow)] may only be used on newtype variants
-    S { s: Str<'a> }
+    S { s: Str<'a> },
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs
index f2e1482d..a9e246e2 100644
--- a/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-deserializing.rs
@@ -18,7 +18,7 @@ struct Foo {
 
 #[derive(Deserialize)]
 struct Other {
-    x: u32
+    x: u32,
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs
index addf2c17..d5dd1d36 100644
--- a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing-if.rs
@@ -11,14 +11,14 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct Foo {
-    #[serde(flatten, skip_serializing_if="Option::is_none")]
+    #[serde(flatten, skip_serializing_if = "Option::is_none")]
     //~^^^ ERROR: #[serde(flatten] can not be combined with #[serde(skip_serializing_if = "...")]
     other: Option<Other>,
 }
 
 #[derive(Serialize)]
 struct Other {
-    x: u32
+    x: u32,
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs
index 5d6ba69a..f116c777 100644
--- a/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs
+++ b/test_suite/tests/compile-fail/conflict/flatten-skip-serializing.rs
@@ -18,7 +18,7 @@ struct Foo {
 
 #[derive(Serialize)]
 struct Other {
-    x: u32
+    x: u32,
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/default-attribute/nameless_struct_fields.rs b/test_suite/tests/compile-fail/default-attribute/nameless_struct_fields.rs
index 01ac28e7..fbcd0f58 100644
--- a/test_suite/tests/compile-fail/default-attribute/nameless_struct_fields.rs
+++ b/test_suite/tests/compile-fail/default-attribute/nameless_struct_fields.rs
@@ -14,4 +14,4 @@ extern crate serde_derive;
 //~^^ ERROR: #[serde(default)] can only be used on structs
 struct T(u8, u8);
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/rename-and-ser.rs b/test_suite/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
index ac73fd62..9c4a185c 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/rename-and-ser.rs
@@ -11,7 +11,7 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename="x", serialize="y")]
+    #[serde(rename = "x", serialize = "y")]
     //~^^^ ERROR: unknown serde field attribute `serialize`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/rename-rename-de.rs b/test_suite/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
index ffd31bc1..4cd9aa92 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/rename-rename-de.rs
@@ -11,8 +11,8 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename="x")]
-    #[serde(rename(deserialize="y"))]
+    #[serde(rename = "x")]
+    #[serde(rename(deserialize = "y"))]
     //~^^^^ ERROR: duplicate serde attribute `rename`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
index e03d2896..c2bca9be 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename-ser.rs
@@ -11,7 +11,7 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename(serialize="x"), rename(serialize="y"))]
+    #[serde(rename(serialize = "x"), rename(serialize = "y"))]
     //~^^^ ERROR: duplicate serde attribute `rename`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
index e6b5fb15..cce37abf 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-rename.rs
@@ -11,8 +11,8 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename(serialize="x"))]
-    #[serde(rename="y")]
+    #[serde(rename(serialize = "x"))]
+    #[serde(rename = "y")]
     //~^^^^ ERROR: duplicate serde attribute `rename`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
index a4790e16..38d3f6b7 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/rename-ser-ser.rs
@@ -11,7 +11,7 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename(serialize="x", serialize="y"))]
+    #[serde(rename(serialize = "x", serialize = "y"))]
     //~^^^ ERROR: duplicate serde attribute `rename`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/duplicate-attribute/two-rename-ser.rs b/test_suite/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
index 0585211b..63ab511f 100644
--- a/test_suite/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
+++ b/test_suite/tests/compile-fail/duplicate-attribute/two-rename-ser.rs
@@ -11,8 +11,8 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct S {
-    #[serde(rename(serialize="x"))]
-    #[serde(rename(serialize="y"))]
+    #[serde(rename(serialize = "x"))]
+    #[serde(rename(serialize = "y"))]
     //~^^^^ ERROR: duplicate serde attribute `rename`
     x: (),
 }
diff --git a/test_suite/tests/compile-fail/remote/enum_getter.rs b/test_suite/tests/compile-fail/remote/enum_getter.rs
index c2b9ad96..7c258912 100644
--- a/test_suite/tests/compile-fail/remote/enum_getter.rs
+++ b/test_suite/tests/compile-fail/remote/enum_getter.rs
@@ -11,7 +11,7 @@ extern crate serde_derive;
 
 mod remote {
     pub enum E {
-        A { a: u8 }
+        A { a: u8 },
     }
 }
 
@@ -22,7 +22,7 @@ pub enum E {
         #[serde(getter = "get_a")]
         //~^^^^^ ERROR: #[serde(getter = "...")] is not allowed in an enum
         a: u8,
-    }
+    },
 }
 
 fn main() {}
diff --git a/test_suite/tests/compile-fail/unknown-attribute/container.rs b/test_suite/tests/compile-fail/unknown-attribute/container.rs
index 8f02d037..c4a804d2 100644
--- a/test_suite/tests/compile-fail/unknown-attribute/container.rs
+++ b/test_suite/tests/compile-fail/unknown-attribute/container.rs
@@ -10,10 +10,10 @@
 extern crate serde_derive;
 
 #[derive(Serialize)]
-#[serde(abc="xyz")]
+#[serde(abc = "xyz")]
 //~^^ ERROR: unknown serde container attribute `abc`
 struct A {
     x: u32,
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/unknown-attribute/field.rs b/test_suite/tests/compile-fail/unknown-attribute/field.rs
index 93e474a6..fad814d5 100644
--- a/test_suite/tests/compile-fail/unknown-attribute/field.rs
+++ b/test_suite/tests/compile-fail/unknown-attribute/field.rs
@@ -11,9 +11,9 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 struct C {
-    #[serde(abc="xyz")]
+    #[serde(abc = "xyz")]
     //~^^^ ERROR: unknown serde field attribute `abc`
     x: u32,
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/unknown-attribute/variant.rs b/test_suite/tests/compile-fail/unknown-attribute/variant.rs
index 13e6e0c1..45e9487d 100644
--- a/test_suite/tests/compile-fail/unknown-attribute/variant.rs
+++ b/test_suite/tests/compile-fail/unknown-attribute/variant.rs
@@ -11,9 +11,9 @@ extern crate serde_derive;
 
 #[derive(Serialize)]
 enum E {
-    #[serde(abc="xyz")]
+    #[serde(abc = "xyz")]
     //~^^^ ERROR: unknown serde variant attribute `abc`
     V,
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_de_newtype_field.rs b/test_suite/tests/compile-fail/with-variant/skip_de_newtype_field.rs
index ccab207f..db67c425 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_de_newtype_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_de_newtype_field.rs
@@ -16,4 +16,4 @@ enum Enum {
     Newtype(#[serde(skip_deserializing)] String),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_de_struct_field.rs b/test_suite/tests/compile-fail/with-variant/skip_de_struct_field.rs
index 69fdff7b..29ba2205 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_de_struct_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_de_struct_field.rs
@@ -20,4 +20,4 @@ enum Enum {
     },
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_de_tuple_field.rs b/test_suite/tests/compile-fail/with-variant/skip_de_tuple_field.rs
index 140a8284..a0e9083c 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_de_tuple_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_de_tuple_field.rs
@@ -16,4 +16,4 @@ enum Enum {
     Tuple(#[serde(skip_deserializing)] String, u8),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_de_whole_variant.rs b/test_suite/tests/compile-fail/with-variant/skip_de_whole_variant.rs
index e7e62d4c..ea1307c7 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_de_whole_variant.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_de_whole_variant.rs
@@ -17,4 +17,4 @@ enum Enum {
     Unit,
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field.rs
index b8e92a3e..c5417f89 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field.rs
@@ -16,4 +16,4 @@ enum Enum {
     Newtype(#[serde(skip_serializing)] String),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field_if.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field_if.rs
index 5a020ec4..98325692 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field_if.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_newtype_field_if.rs
@@ -16,4 +16,4 @@ enum Enum {
     Newtype(#[serde(skip_serializing_if = "always")] String),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field.rs
index 93636ac6..0194e959 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field.rs
@@ -20,4 +20,4 @@ enum Enum {
     },
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field_if.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field_if.rs
index 9ea047a7..5f871178 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field_if.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_struct_field_if.rs
@@ -20,4 +20,4 @@ enum Enum {
     },
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field.rs
index 53f3545d..682a8330 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field.rs
@@ -16,4 +16,4 @@ enum Enum {
     Tuple(#[serde(skip_serializing)] String, u8),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field_if.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field_if.rs
index cccb1742..c27e25b6 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field_if.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_tuple_field_if.rs
@@ -16,4 +16,4 @@ enum Enum {
     Tuple(#[serde(skip_serializing_if = "always")] String, u8),
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/compile-fail/with-variant/skip_ser_whole_variant.rs b/test_suite/tests/compile-fail/with-variant/skip_ser_whole_variant.rs
index 2cca3a0c..1e23e0ab 100644
--- a/test_suite/tests/compile-fail/with-variant/skip_ser_whole_variant.rs
+++ b/test_suite/tests/compile-fail/with-variant/skip_ser_whole_variant.rs
@@ -17,4 +17,4 @@ enum Enum {
     Unit,
 }
 
-fn main() { }
+fn main() {}
diff --git a/test_suite/tests/run-pass/identity-op.rs b/test_suite/tests/run-pass/identity-op.rs
index 2ec0cc19..3fca3cd8 100644
--- a/test_suite/tests/run-pass/identity-op.rs
+++ b/test_suite/tests/run-pass/identity-op.rs
@@ -15,6 +15,8 @@ extern crate serde_derive;
 // serialized, which Clippy warns about. If the expansion info is registered
 // correctly, the Clippy lint is not triggered.
 #[derive(Serialize)]
-struct A { b: u8 }
+struct A {
+    b: u8,
+}
 
 fn main() {}