error[E0623]: lifetime mismatch
  --> $DIR/object-lifetime-default-mybox.rs:27:5
   |
LL | fn load1<'a,'b>(a: &'a MyBox<dyn SomeTrait>,
   |                    ------------------------ this parameter and the return type are declared with different lifetimes...
LL |                 b: &'b MyBox<dyn SomeTrait>)
LL |                 -> &'b MyBox<dyn SomeTrait>
   |                    ------------------------
LL | {
LL |     a
   |     ^ ...but data from `a` is returned here

error[E0308]: mismatched types
  --> $DIR/object-lifetime-default-mybox.rs:31:11
   |
LL |     load0(ss)
   |           ^^ lifetime mismatch
   |
   = note: expected reference `&MyBox<(dyn SomeTrait + 'static)>`
              found reference `&MyBox<(dyn SomeTrait + 'a)>`
note: the lifetime `'a` as defined on the function body at 30:10...
  --> $DIR/object-lifetime-default-mybox.rs:30:10
   |
LL | fn load2<'a>(ss: &MyBox<dyn SomeTrait + 'a>) -> MyBox<dyn SomeTrait + 'a> {
   |          ^^
   = note: ...does not necessarily outlive the static lifetime

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0308, E0623.
For more information about an error, try `rustc --explain E0308`.