warning: this operation will panic at runtime
  --> $DIR/ice-assert-fail-div-by-zero.rs:11:5
   |
LL |     f.0 / 0;
   |     ^^^^^^^ attempt to divide `_` by zero
   |
note: the lint level is defined here
  --> $DIR/ice-assert-fail-div-by-zero.rs:5:9
   |
LL | #![warn(unconditional_panic)]
   |         ^^^^^^^^^^^^^^^^^^^

warning: 1 warning emitted