Make edition method common to Rustc and Rustdoc

Author: GuillaumeGomez

src/tools/run-make-support/src/lib.rs

@@ -267,6 +267,13 @@ macro_rules! impl_common_helpers {
                 self.cmd.current_dir(path);
                 self
             }
+
+            /// Specify the edition year.
+            pub fn edition(&mut self, edition: &str) -> &mut Self {
+                self.cmd.arg("--edition");
+                self.cmd.arg(edition);
+                self
+            }
         }
     };
 }

src/tools/run-make-support/src/rustc.rs

@@ -143,13 +143,6 @@ impl Rustc {
         self
     }
 
-    /// Specify the edition year.
-    pub fn edition(&mut self, edition: &str) -> &mut Self {
-        self.cmd.arg("--edition");
-        self.cmd.arg(edition);
-        self
-    }
-
     /// Specify the print request.
     pub fn print(&mut self, request: &str) -> &mut Self {
         self.cmd.arg("--print");