Add rustic-test-failure to compilation-error-regexp-alist

[neosimsim]

Add regexp to compilation-error-regexp-alist to match test failures for rustic-cargo-test-mode.
This make test output like

---- fail stdout ----
thread 'fail' panicked at src/main.rs:20:5:
assertion `left == right` failed
  left: 1
 right: 2

navigatable.

Closes #573

[neosimsim]

Please note that I'm not so sure about the error type / level. Mabe 0 or 1 would be more suitable.

[mplanchard]

I'm not sure about including the initial ---- blah --- bit, because tests that print to stdout will have their output below that but before the panic, e.g.:

---- entity::models::entity::insert_or_update_all_entity_types stdout ----
[lib/rs/spec-test/src/lib.rs:31:9] "TEST_ENVIRONMENT already set" = "TEST_ENVIRONMENT already set"
thread 'module::models::some_model::insert' panicked at lib/rs/lib-data/tests/lib-data-test/entity/models/entity.rs:89:53:
called `Result::unwrap()` on an `Err` value: EntityDbError(SqlxStoreError(Unexpected(Unexpected("failed to deserialize model: invalid type: null, expected string or map"))))

[neosimsim]

Good point. But I'm not so sure that my approach is correct, anyway. I believe you're right in #573 that rustic-compilation-panic is not correct.

[neosimsim]

The more I think about it, the more I feel this was the wrong approach and rustic-compilation-panic needs to be fixed. #575

[neosimsim]

Closed in favor of #575.