error[E0495]: cannot infer an appropriate lifetime due to conflicting requirements
  --> $DIR/regions-close-over-type-parameter-multiple.rs:20:5
   |
LL |     box v as Box<dyn SomeTrait + 'a>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: first, the lifetime cannot outlive the lifetime `'a` as defined on the function body at 18:20...
  --> $DIR/regions-close-over-type-parameter-multiple.rs:18:20
   |
LL | fn make_object_bad<'a,'b,'c,A:SomeTrait+'a+'b>(v: A) -> Box<dyn SomeTrait + 'c> {
   |                    ^^
note: ...so that the declared lifetime parameter bounds are satisfied
  --> $DIR/regions-close-over-type-parameter-multiple.rs:20:5
   |
LL |     box v as Box<dyn SomeTrait + 'a>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: but, the lifetime must be valid for the lifetime `'c` as defined on the function body at 18:26...
  --> $DIR/regions-close-over-type-parameter-multiple.rs:18:26
   |
LL | fn make_object_bad<'a,'b,'c,A:SomeTrait+'a+'b>(v: A) -> Box<dyn SomeTrait + 'c> {
   |                          ^^
note: ...so that the expression is assignable
  --> $DIR/regions-close-over-type-parameter-multiple.rs:20:5
   |
LL |     box v as Box<dyn SomeTrait + 'a>
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: expected  `std::boxed::Box<(dyn SomeTrait + 'c)>`
              found  `std::boxed::Box<dyn SomeTrait>`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0495`.