error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used. --> $DIR/used_underscore_binding.rs:23:5 | 23 | _foo + 1 | ^^^^ | = note: `-D clippy::used-underscore-binding` implied by `-D warnings` error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used. --> $DIR/used_underscore_binding.rs:28:20 | 28 | println!("{}", _foo); | ^^^^ error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used. --> $DIR/used_underscore_binding.rs:29:16 | 29 | assert_eq!(_foo, _foo); | ^^^^ error: used binding `_foo` which is prefixed with an underscore. A leading underscore signals that a binding will not be used. --> $DIR/used_underscore_binding.rs:29:22 | 29 | assert_eq!(_foo, _foo); | ^^^^ error: used binding `_underscore_field` which is prefixed with an underscore. A leading underscore signals that a binding will not be used. --> $DIR/used_underscore_binding.rs:42:5 | 42 | s._underscore_field += 1; | ^^^^^^^^^^^^^^^^^^^ error: aborting due to 5 previous errors