[unittest-rust] Add output and track test failures

Adds proper tracking of test failures and prints test status and
summary.

Test: build.py qemu-generic-arm64-test-debug --test com.android.trusty.rust.tipc.test
Bug: 195994856

Change-Id: I23d0f1cb3bb28a0bf2f931f6098400217a046936
2 files changed