error: unsafe block missing a safety comment
  --> $DIR/auxiliary/ice-7868-aux.rs:2:5
   |
LL |     unsafe { 0 };
   |     ^^^^^^^^^^^^
   |
   = note: `-D clippy::undocumented-unsafe-blocks` implied by `-D warnings`
help: consider adding a safety comment
   |
LL ~     // Safety: ...
LL ~     unsafe { 0 };
   |

error: aborting due to previous error