Debug True from acton test

[plajjan]

There's a new intermittent problem that has started to appear in CI

cd test/stdlib_tests && /__w/acton/acton/dist/bin/acton test
Building project tests...
True
True
True
True
make[1]: *** [Makefile:347: test-stdlib] Error 1
make[1]: Leaving directory '/__w/acton/acton'
make: *** [Makefile:302: test] Error 2
make: Leaving directory '/__w/acton/acton'

Sometimes it's one True, sometimes multiple. I don't know where this is coming from but presumably it has to do with the recent restructuring of the test runner where I run each test in its own subprocess. I have never seen it locally but that might be more of happenstance and CI runs a lot more test invocations than I do locally.

• https://github.com/actonlang/acton/actions/runs/12899433533/job/35968207367
• https://github.com/actonlang/acton/actions/runs/12899433533/job/35968207693