error[E0004]: non-exhaustive patterns: `deref!(true)` not covered
  --> $DIR/non-exhaustive.rs:7:11
   |
LL |     match Box::new(false) {
   |           ^^^^^^^^^^^^^^^ pattern `deref!(true)` not covered
   |
note: `Box<bool>` defined here
  --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
   = note: the matched value is of type `Box<bool>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
   |
LL ~         false => {},
LL +         deref!(true) => todo!()
   |

error[E0004]: non-exhaustive patterns: `deref!(deref!(false))` not covered
  --> $DIR/non-exhaustive.rs:12:11
   |
LL |     match Box::new(Box::new(false)) {
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `deref!(deref!(false))` not covered
   |
note: `Box<Box<bool>>` defined here
  --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
   = note: the matched value is of type `Box<Box<bool>>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
   |
LL ~         true => {},
LL +         deref!(deref!(false)) => todo!()
   |

error[E0004]: non-exhaustive patterns: `deref!((true, deref!(true)))` and `deref!((false, deref!(false)))` not covered
  --> $DIR/non-exhaustive.rs:17:11
   |
LL |     match Box::new((true, Box::new(false))) {
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ patterns `deref!((true, deref!(true)))` and `deref!((false, deref!(false)))` not covered
   |
note: `Box<(bool, Box<bool>)>` defined here
  --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
   = note: the matched value is of type `Box<(bool, Box<bool>)>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
   |
LL ~         (false, true) => {},
LL +         deref!((true, deref!(true))) | deref!((false, deref!(false))) => todo!()
   |

error[E0004]: non-exhaustive patterns: `deref!((deref!(T::C), _))` not covered
  --> $DIR/non-exhaustive.rs:24:11
   |
LL |     match Box::new((Box::new(T::A), Box::new(T::A))) {
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `deref!((deref!(T::C), _))` not covered
   |
note: `Box<(Box<T>, Box<T>)>` defined here
  --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
   = note: the matched value is of type `Box<(Box<T>, Box<T>)>`
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
   |
LL ~         (T::A | T::B, T::C) => {},
LL +         deref!((deref!(T::C), _)) => todo!()
   |

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0004`.