error: direct cast of function item into an integer
  --> $DIR/function_casts_as_integer.rs:15:17
   |
LL |     let x = foo as usize;
   |                 ^^^^^^^^
   |
note: the lint level is defined here
  --> $DIR/function_casts_as_integer.rs:3:9
   |
LL | #![deny(function_casts_as_integer)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
help: first cast to a pointer `as *const ()`
   |
LL |     let x = foo as *const () as usize;
   |                 ++++++++++++

error: direct cast of function item into an integer
  --> $DIR/function_casts_as_integer.rs:16:25
   |
LL |     let x = String::len as usize;
   |                         ^^^^^^^^
   |
help: first cast to a pointer `as *const ()`
   |
LL |     let x = String::len as *const () as usize;
   |                         ++++++++++++

error: direct cast of function item into an integer
  --> $DIR/function_casts_as_integer.rs:17:29
   |
LL |     let x = MyEnum::Variant as usize;
   |                             ^^^^^^^^
   |
help: first cast to a pointer `as *const ()`
   |
LL |     let x = MyEnum::Variant as *const () as usize;
   |                             ++++++++++++

error: direct cast of function item into an integer
  --> $DIR/function_casts_as_integer.rs:18:22
   |
LL |     let x = MyStruct as usize;
   |                      ^^^^^^^^
   |
help: first cast to a pointer `as *const ()`
   |
LL |     let x = MyStruct as *const () as usize;
   |                      ++++++++++++

error: aborting due to 4 previous errors