error: `become` requires a function call
  --> $DIR/become-uncallable.rs:7:12
   |
LL |     become 1;
   |     -------^
   |     |
   |     help: try using `return` instead: `return`
   |
note: not a function call
  --> $DIR/become-uncallable.rs:7:12
   |
LL |     become 1;
   |            ^

error: `become` requires a function call
  --> $DIR/become-uncallable.rs:11:12
   |
LL |     become { h() };
   |     -------^^^^^^^
   |     |
   |     help: try using `return` instead: `return`
   |
note: not a function call
  --> $DIR/become-uncallable.rs:11:12
   |
LL |     become { h() };
   |            ^^^^^^^

error: `become` requires a function call
  --> $DIR/become-uncallable.rs:15:12
   |
LL |     become *&g();
   |     -------^^^^^
   |     |
   |     help: try using `return` instead: `return`
   |
note: not a function call
  --> $DIR/become-uncallable.rs:15:12
   |
LL |     become *&g();
   |            ^^^^^

error: aborting due to 3 previous errors