error[E0618]: expected function, found `()`
  --> $DIR/suggest-on-bare-closure-call.rs:6:15
   |
LL |     let _ = ||{}();
   |               ^^--
   |               |
   |               call expression requires function
   |
help: if you meant to create this closure and immediately call it, surround the closure with parentheses
   |
LL |     let _ = (||{})();
   |             +    +

error[E0618]: expected function, found `()`
  --> $DIR/suggest-on-bare-closure-call.rs:9:21
   |
LL |     let _ = async ||{}();
   |                     ^^--
   |                     |
   |                     call expression requires function
   |
help: if you meant to create this closure and immediately call it, surround the closure with parentheses
   |
LL |     let _ = (async ||{})();
   |             +          +

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0618`.