error: unnecessary parentheses around `return` value
  --> $DIR/lint-unnecessary-parens.rs:20:12
   |
LL |     return (1); //~ ERROR unnecessary parentheses around `return` value
   |            ^^^ help: remove these parentheses
   |
note: lint level defined here
  --> $DIR/lint-unnecessary-parens.rs:11:9
   |
LL | #![deny(unused_parens)]
   |         ^^^^^^^^^^^^^

error: unnecessary parentheses around `return` value
  --> $DIR/lint-unnecessary-parens.rs:23:12
   |
LL |     return (X { y }); //~ ERROR unnecessary parentheses around `return` value
   |            ^^^^^^^^^ help: remove these parentheses

error: unnecessary parentheses around function argument
  --> $DIR/lint-unnecessary-parens.rs:28:9
   |
LL |     bar((true)); //~ ERROR unnecessary parentheses around function argument
   |         ^^^^^^ help: remove these parentheses

error: unnecessary parentheses around `if` condition
  --> $DIR/lint-unnecessary-parens.rs:30:8
   |
LL |     if (true) {} //~ ERROR unnecessary parentheses around `if` condition
   |        ^^^^^^ help: remove these parentheses

error: unnecessary parentheses around `while` condition
  --> $DIR/lint-unnecessary-parens.rs:31:11
   |
LL |     while (true) {} //~ ERROR unnecessary parentheses around `while` condition
   |           ^^^^^^ help: remove these parentheses

error: unnecessary parentheses around `match` head expression
  --> $DIR/lint-unnecessary-parens.rs:32:11
   |
LL |     match (true) { //~ ERROR unnecessary parentheses around `match` head expression
   |           ^^^^^^ help: remove these parentheses

error: unnecessary parentheses around `if let` head expression
  --> $DIR/lint-unnecessary-parens.rs:35:16
   |
LL |     if let 1 = (1) {} //~ ERROR unnecessary parentheses around `if let` head expression
   |                ^^^ help: remove these parentheses

error: unnecessary parentheses around `while let` head expression
  --> $DIR/lint-unnecessary-parens.rs:36:19
   |
LL |     while let 1 = (2) {} //~ ERROR unnecessary parentheses around `while let` head expression
   |                   ^^^ help: remove these parentheses

error: unnecessary parentheses around method argument
  --> $DIR/lint-unnecessary-parens.rs:50:24
   |
LL |     X { y: false }.foo((true)); //~ ERROR unnecessary parentheses around method argument
   |                        ^^^^^^ help: remove these parentheses

error: unnecessary parentheses around assigned value
  --> $DIR/lint-unnecessary-parens.rs:52:18
   |
LL |     let mut _a = (0); //~ ERROR unnecessary parentheses around assigned value
   |                  ^^^ help: remove these parentheses

error: unnecessary parentheses around assigned value
  --> $DIR/lint-unnecessary-parens.rs:53:10
   |
LL |     _a = (0); //~ ERROR unnecessary parentheses around assigned value
   |          ^^^ help: remove these parentheses

error: unnecessary parentheses around assigned value
  --> $DIR/lint-unnecessary-parens.rs:54:11
   |
LL |     _a += (1); //~ ERROR unnecessary parentheses around assigned value
   |           ^^^ help: remove these parentheses

error: aborting due to 12 previous errors