error: this operation will panic at runtime
  --> $DIR/issue-54348.rs:5:5
   |
LL |     [1][1.5 as usize];
   |     ^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1
   |
   = note: `#[deny(unconditional_panic)]` on by default

error: this operation will panic at runtime
  --> $DIR/issue-54348.rs:6:5
   |
LL |     [1][1u64 as usize];
   |     ^^^^^^^^^^^^^^^^^^ index out of bounds: the length is 1 but the index is 1

error: aborting due to 2 previous errors