warning: unnecessary parentheses around assigned value
  --> $DIR/unused_braces.rs:10:13
   |
LL |     let _ = (7);
   |             ^^^ help: remove these parentheses
   |
note: the lint level is defined here
  --> $DIR/unused_braces.rs:4:24
   |
LL | #![warn(unused_braces, unused_parens)]
   |                        ^^^^^^^^^^^^^

warning: unnecessary braces around `if` condition
  --> $DIR/unused_braces.rs:26:8
   |
LL |     if { true } {
   |        ^^^^^^^^ help: remove these braces
   |
note: the lint level is defined here
  --> $DIR/unused_braces.rs:4:9
   |
LL | #![warn(unused_braces, unused_parens)]
   |         ^^^^^^^^^^^^^

warning: unnecessary braces around `while` condition
  --> $DIR/unused_braces.rs:30:11
   |
LL |     while { false } {
   |           ^^^^^^^^^ help: remove these braces

warning: unnecessary braces around const expression
  --> $DIR/unused_braces.rs:34:17
   |
LL |     let _: [u8; { 3 }];
   |                 ^^^^^ help: remove these braces

warning: unnecessary braces around function argument
  --> $DIR/unused_braces.rs:37:13
   |
LL |     consume({ 7 });
   |             ^^^^^ help: remove these braces

warning: 5 warnings emitted