error: non-binding let on a type that implements `Drop`
  --> $DIR/issue-119697-extra-let.rs:15:5
   |
LL |     _ = field;
   |     ^^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/issue-119697-extra-let.rs:1:9
   |
LL | #![deny(let_underscore_drop)]
   |         ^^^^^^^^^^^^^^^^^^^
help: consider binding to an unused variable to avoid immediately dropping the value
   |
LL |     let _unused = field;
   |     ~~~~~~~~~~~
help: consider immediately dropping the value
   |
LL |     drop(field);
   |     ~~~~~     +

error: non-binding let on a type that implements `Drop`
  --> $DIR/issue-119697-extra-let.rs:17:5
   |
LL |     let _ = field;
   |     ^^^^^^^^^^^^^^
   |
help: consider binding to an unused variable to avoid immediately dropping the value
   |
LL |     let _unused = field;
   |         ~~~~~~~
help: consider immediately dropping the value
   |
LL |     drop(field);
   |     ~~~~~     +

error: aborting due to 2 previous errors