error[E0623]: lifetime mismatch
  --> $DIR/ptr-is-invariant-over-v.rs:21:14
   |
18 |     big: Ptr<'small, &'big u32, (Exclusive, Aligned, Valid)>,
   |          --------------------------------------------------- these two types are declared with different lifetimes...
...
21 |     _small = big;
   |              ^^^ ...but data from `big` flows into `big` here

error[E0623]: lifetime mismatch
  --> $DIR/ptr-is-invariant-over-v.rs:30:14
   |
27 |     big: Ptr<'small, &'big u32, (Shared, Aligned, Valid)>,
   |          ------------------------------------------------ these two types are declared with different lifetimes...
...
30 |     _small = big;
   |              ^^^ ...but data from `big` flows into `big` here

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0623`.