Enable tests am: 558bba38c3 am: 7b38c4d5cd am: 2f94665a74 am: fcc9f38e21

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cast/+/1871975

Change-Id: I6c5100ae8fdc7c2233662b0f29c917bed22fa290