error[E0382]: use of moved value: `t`
  --> $DIR/issue-67123.rs:2:13
   |
LL |     || { t; t; };
   |          -  ^ value used here after move
   |          |
   |          value moved here
   |
   = note: move occurs because `t` has type `T`, which does not implement the `Copy` trait
help: consider restricting type parameter `T`
   |
LL | fn foo<T: Copy>(t: T) {
   |         ++++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0382`.