Compiler unit tests seem to fail
The tests section of the developer memo is TODO so I'm not sure I'm doing this right, but the tests seem to fail (on master) with this error when running `sbt test`

```
[info] *** 1 SUITE ABORTED ***
[info] *** 56 TESTS FAILED ***
[error] Failed tests:
[error] 	io.kaitai.struct.translators.TranslatorSpec
[error] Error during tests:
[error] 	io.kaitai.struct.ErrorMessagesSpec
[error] (compilerJVM / Test / test) sbt.TestsFailedException: Tests unsuccessful
[error] Total time: 6 s, completed Jun 21, 2022, 5:47:20 PM
```