error: use of a blacklisted/placeholder name `foo`
  --> $DIR/blacklisted_name.rs:20:9
   |
20 | fn test(foo: ()) {}
   |         ^^^
   |
   = note: `-D clippy::blacklisted-name` implied by `-D warnings`

error: use of a blacklisted/placeholder name `foo`
  --> $DIR/blacklisted_name.rs:23:9
   |
23 |     let foo = 42;
   |         ^^^

error: use of a blacklisted/placeholder name `bar`
  --> $DIR/blacklisted_name.rs:24:9
   |
24 |     let bar = 42;
   |         ^^^

error: use of a blacklisted/placeholder name `baz`
  --> $DIR/blacklisted_name.rs:25:9
   |
25 |     let baz = 42;
   |         ^^^

error: use of a blacklisted/placeholder name `foo`
  --> $DIR/blacklisted_name.rs:31:10
   |
31 |         (foo, Some(bar), baz @ Some(_)) => (),
   |          ^^^

error: use of a blacklisted/placeholder name `bar`
  --> $DIR/blacklisted_name.rs:31:20
   |
31 |         (foo, Some(bar), baz @ Some(_)) => (),
   |                    ^^^

error: use of a blacklisted/placeholder name `baz`
  --> $DIR/blacklisted_name.rs:31:26
   |
31 |         (foo, Some(bar), baz @ Some(_)) => (),
   |                          ^^^

error: use of a blacklisted/placeholder name `foo`
  --> $DIR/blacklisted_name.rs:36:19
   |
36 | fn issue_1647(mut foo: u8) {
   |                   ^^^

error: use of a blacklisted/placeholder name `bar`
  --> $DIR/blacklisted_name.rs:37:13
   |
37 |     let mut bar = 0;
   |             ^^^

error: use of a blacklisted/placeholder name `baz`
  --> $DIR/blacklisted_name.rs:38:21
   |
38 |     if let Some(mut baz) = Some(42) {}
   |                     ^^^

error: use of a blacklisted/placeholder name `bar`
  --> $DIR/blacklisted_name.rs:42:13
   |
42 |     let ref bar = 0;
   |             ^^^

error: use of a blacklisted/placeholder name `baz`
  --> $DIR/blacklisted_name.rs:43:21
   |
43 |     if let Some(ref baz) = Some(42) {}
   |                     ^^^

error: use of a blacklisted/placeholder name `bar`
  --> $DIR/blacklisted_name.rs:47:17
   |
47 |     let ref mut bar = 0;
   |                 ^^^

error: use of a blacklisted/placeholder name `baz`
  --> $DIR/blacklisted_name.rs:48:25
   |
48 |     if let Some(ref mut baz) = Some(42) {}
   |                         ^^^

error: aborting due to 14 previous errors