error[E0061]: this function takes 1 argument but 0 arguments were supplied
  --> $DIR/display-is-suggestable.rs:6:5
   |
LL |     foo();
   |     ^^^-- argument #1 of type `&dyn std::fmt::Display + Send` is missing
   |
note: function defined here
  --> $DIR/display-is-suggestable.rs:3:4
   |
LL | fn foo(x: &(dyn Display + Send)) {}
   |    ^^^ ------------------------
help: provide the argument
   |
LL |     foo(/* &dyn std::fmt::Display + Send */);
   |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0061`.