error[E0277]: `(dyn Dummy + 'a)` cannot be shared between threads safely
  --> $DIR/kindck-send-object1.rs:10:19
   |
LL |     assert_send::<&'a dyn Dummy>();
   |                   ^^^^^^^^^^^^^ `(dyn Dummy + 'a)` cannot be shared between threads safely
   |
   = help: the trait `Sync` is not implemented for `(dyn Dummy + 'a)`, which is required by `&'a (dyn Dummy + 'a): Send`
   = note: required for `&'a (dyn Dummy + 'a)` to implement `Send`
note: required by a bound in `assert_send`
  --> $DIR/kindck-send-object1.rs:5:18
   |
LL | fn assert_send<T:Send+'static>() { }
   |                  ^^^^ required by this bound in `assert_send`

error[E0277]: `(dyn Dummy + 'a)` cannot be sent between threads safely
  --> $DIR/kindck-send-object1.rs:29:19
   |
LL |     assert_send::<Box<dyn Dummy + 'a>>();
   |                   ^^^^^^^^^^^^^^^^^^^ `(dyn Dummy + 'a)` cannot be sent between threads safely
   |
   = help: the trait `Send` is not implemented for `(dyn Dummy + 'a)`, which is required by `Box<(dyn Dummy + 'a)>: Send`
   = note: required for `Unique<(dyn Dummy + 'a)>` to implement `Send`
note: required because it appears within the type `Box<(dyn Dummy + 'a)>`
  --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
note: required by a bound in `assert_send`
  --> $DIR/kindck-send-object1.rs:5:18
   |
LL | fn assert_send<T:Send+'static>() { }
   |                  ^^^^ required by this bound in `assert_send`

error: lifetime may not live long enough
  --> $DIR/kindck-send-object1.rs:14:5
   |
LL | fn test52<'a>() {
   |           -- lifetime `'a` defined here
LL |     assert_send::<&'a (dyn Dummy + Sync)>();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'a` must outlive `'static`

error: aborting due to 3 previous errors

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