error: struct literals are not allowed here
  --> $DIR/struct-literal-restrictions-in-lamda.rs:12:14
   |
LL |       while || Foo {
   |  ______________^
LL | |         x: 3
LL | |     }.hi() {
   | |_____^
   |
help: surround the struct literal with parentheses
   |
LL ~     while || (Foo {
LL |         x: 3
LL ~     }).hi() {
   |

error[E0308]: mismatched types
  --> $DIR/struct-literal-restrictions-in-lamda.rs:12:11
   |
LL |       while || Foo {
   |  ___________^
LL | |         x: 3
LL | |     }.hi() {
   | |__________^ expected `bool`, found closure
   |
   = note: expected type `bool`
           found closure `{closure@$DIR/struct-literal-restrictions-in-lamda.rs:12:11: 12:13}`
help: use parentheses to call this closure
   |
LL ~     while (|| Foo {
LL |         x: 3
LL ~     }.hi())() {
   |

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.