src/test/ui/lint/force-warn/force-lint-allow-all-warnings.stderr

warning: function is never used: `dead_function`
  --> $DIR/force-lint-allow-all-warnings.rs:6:4
   |
LL | fn dead_function() {}
   |    ^^^^^^^^^^^^^
   |
   = note: requested on the command line with `--force-warn dead-code`

warning: 1 warning emitted