rust-clippy/tests/ui/unit_cmp.stderr

error: ==-comparison of unit values detected. This will always be true
  --> $DIR/unit_cmp.rs:21:8
   |
21 |       if {
   |  ________^
22 | |         true;
23 | |     } == {
24 | |         false;
25 | |     } {}
   | |_____^
   |
   = note: `-D clippy::unit-cmp` implied by `-D warnings`

error: >-comparison of unit values detected. This will always be false
  --> $DIR/unit_cmp.rs:27:8
   |
27 |       if {
   |  ________^
28 | |         true;
29 | |     } > {
30 | |         false;
31 | |     } {}
   | |_____^

error: aborting due to 2 previous errors