error: Consider removing unnecessary double parentheses
  --> double_parens.rs:16:5
   |
16 |     ((0))
   |     ^^^^^
   |
   = note: `-D double-parens` implied by `-D warnings`

error: Consider removing unnecessary double parentheses
  --> double_parens.rs:20:14
   |
20 |     dummy_fn((0));
   |              ^^^
   |
   = note: `-D double-parens` implied by `-D warnings`

error: Consider removing unnecessary double parentheses
  --> double_parens.rs:24:20
   |
24 |     x.dummy_method((0));
   |                    ^^^
   |
   = note: `-D double-parens` implied by `-D warnings`

error: Consider removing unnecessary double parentheses
  --> double_parens.rs:28:5
   |
28 |     ((1, 2))
   |     ^^^^^^^^
   |
   = note: `-D double-parens` implied by `-D warnings`

error: Consider removing unnecessary double parentheses
  --> double_parens.rs:32:5
   |
32 |     (())
   |     ^^^^
   |
   = note: `-D double-parens` implied by `-D warnings`

error: aborting due to previous error(s)

error: Could not compile `clippy_tests`.

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