for x in range(a, b) -> for x in a..b

sed -i 's/in range(\([^,]*\), *\([^()]*\))/in \1\.\.\2/g' **/*.rs

src/test/debuginfo/destructured-for-loop-variable.rs

@@ -202,7 +202,7 @@ fn main() {
         zzz(); // #break
     }
 
-    for i in range(1234, 1235i) {
+    for i in 1234..1235i {
         zzz(); // #break
     }