warning: unreachable pattern
  --> $DIR/issue-43253.rs:29:9
   |
LL |         9 => {},
   |         ^
   |
note: lint level defined here
  --> $DIR/issue-43253.rs:4:9
   |
LL | #![warn(unreachable_patterns)]
   |         ^^^^^^^^^^^^^^^^^^^^

warning: unreachable pattern
  --> $DIR/issue-43253.rs:35:9
   |
LL |         8..=9 => {},
   |         ^^^^^

warning: unreachable pattern
  --> $DIR/issue-43253.rs:41:9
   |
LL |         9..=9 => {},
   |         ^^^^^