error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:40:5
   |
LL |     _foo1();
   |     ^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:19:1
   |
LL | fn _foo1() {}
   | ^^^^^^^^^^
   = note: `-D clippy::used-underscore-items` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::used_underscore_items)]`

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:41:13
   |
LL |     let _ = _foo2();
   |             ^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:21:1
   |
LL | fn _foo2() -> i32 {
   | ^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:42:5
   |
LL |     a::b::c::_foo3();
   |     ^^^^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:28:13
   |
LL |             pub fn _foo3() {}
   |             ^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:43:14
   |
LL |     let _ = &_FooStruct {};
   |              ^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:13:1
   |
LL | struct _FooStruct {}
   | ^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:44:13
   |
LL |     let _ = _FooStruct {};
   |             ^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:13:1
   |
LL | struct _FooStruct {}
   | ^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:46:22
   |
LL |     let foo_struct = _FooStruct {};
   |                      ^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:13:1
   |
LL | struct _FooStruct {}
   | ^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:47:5
   |
LL |     foo_struct._method_call();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:16:5
   |
LL |     fn _method_call(self) {}
   |     ^^^^^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:49:23
   |
LL |     let foo_struct2 = a::b::c::_FooStruct2 {};
   |                       ^^^^^^^^^^^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:30:13
   |
LL |             pub struct _FooStruct2 {}
   |             ^^^^^^^^^^^^^^^^^^^^^^

error: used underscore-prefixed item
  --> tests/ui/used_underscore_items.rs:50:5
   |
LL |     foo_struct2._method_call();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: item is defined here
  --> tests/ui/used_underscore_items.rs:33:17
   |
LL |                 pub fn _method_call(self) {}
   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 9 previous errors