error[E0277]: the trait bound `Foo: Clone` is not satisfied
  --> $DIR/issue-71136.rs:5:5
   |
LL | #[derive(Clone)]
   |          ----- in this derive macro expansion
LL | struct FooHolster {
LL |     the_foos: Vec<Foo>,
   |     ^^^^^^^^^^^^^^^^^^ expected an implementor of trait `Clone`
   |
   = note: required because of the requirements on the impl of `Clone` for `Vec<Foo>`
note: required by `clone`
  --> $SRC_DIR/core/src/clone.rs:LL:COL
   |
LL |     fn clone(&self) -> Self;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   = note: this error originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.