error: field is never read: `f`
  --> $DIR/clone-debug-dead-code.rs:6:12
   |
LL | struct A { f: () }
   |            ^^^^^
   |
note: the lint level is defined here
  --> $DIR/clone-debug-dead-code.rs:4:11
   |
LL | #![forbid(dead_code)]
   |           ^^^^^^^^^

error: field is never read: `f`
  --> $DIR/clone-debug-dead-code.rs:10:12
   |
LL | struct B { f: () }
   |            ^^^^^
   |
note: `B` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
  --> $DIR/clone-debug-dead-code.rs:9:10
   |
LL | #[derive(Clone)]
   |          ^^^^^
   = note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)

error: field is never read: `f`
  --> $DIR/clone-debug-dead-code.rs:14:12
   |
LL | struct C { f: () }
   |            ^^^^^
   |
note: `C` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
  --> $DIR/clone-debug-dead-code.rs:13:10
   |
LL | #[derive(Debug)]
   |          ^^^^^
   = note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)

error: field is never read: `f`
  --> $DIR/clone-debug-dead-code.rs:18:12
   |
LL | struct D { f: () }
   |            ^^^^^
   |
note: `D` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
  --> $DIR/clone-debug-dead-code.rs:17:10
   |
LL | #[derive(Debug,Clone)]
   |          ^^^^^ ^^^^^
   = note: this error originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)

error: field is never read: `f`
  --> $DIR/clone-debug-dead-code.rs:21:12
   |
LL | struct E { f: () }
   |            ^^^^^

error: aborting due to 5 previous errors