error: missing `in` in `for` loop
  --> $DIR/issue-40782.rs:4:11
   |
LL |     for _i 0..2 {
   |           ^
   |
help: try adding `in` here
   |
LL |     for _i in 0..2 {
   |            ++

error: missing `in` in `for` loop
  --> $DIR/issue-40782.rs:6:12
   |
LL |     for _i of 0..2 {
   |            ^^
   |
help: try using `in` here instead
   |
LL |     for _i in 0..2 {
   |            ~~

error: aborting due to 2 previous errors