Replace rustfmt::skip with cfg_attr(rustfmt, rustfmt::skip)

As temporary work around for #551

Author: stepancheg

protobuf-codegen/src/code_writer.rs

@@ -58,7 +58,7 @@ impl<'a> CodeWriter<'a> {
         self.write_line("#![allow(clippy::all)]");
         self.write_line("");
         self.write_line("#![allow(unused_attributes)]");
-        self.write_line("#![rustfmt::skip]");
+        self.write_line("#![cfg_attr(rustfmt, rustfmt::skip)]");
         self.write_line("");
         self.write_line("#![allow(box_pointers)]");
         self.write_line("#![allow(dead_code)]");

protobuf/src/descriptor.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/plugin.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/rustproto.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/any.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/api.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/duration.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/empty.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/field_mask.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/source_context.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/struct_pb.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/timestamp.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/type_pb.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]

protobuf/src/well_known_types/wrappers.rs

@@ -6,7 +6,7 @@
 #![allow(clippy::all)]
 
 #![allow(unused_attributes)]
-#![rustfmt::skip]
+#![cfg_attr(rustfmt, rustfmt::skip)]
 
 #![allow(box_pointers)]
 #![allow(dead_code)]