No lint issues, but gradual fails on empty compare

[pboling]

See workflow run here: https://github.com/pboling/active_security/actions/runs/9799138608/job/27058821636

Running RuboCop Gradual...
..................................................
Found 0 files with 0 issue(s).
Processing results...
RuboCop Gradual is complete!
RuboCop Gradual failed!

Unexpected Changes!

RuboCop Gradual lock file is outdated, to fix this message:
- Run `rubocop-gradual` locally and commit the results

`.rubocop_gradual.lock` diff:

-{
-
-}

Error: Process completed with exit code 1.

There is no rubocop_gradual.lock in the repo because there are no lint issues at all. When I run locally I get:

❯ bundle exec rake rubocop_gradual
Running RuboCop Gradual...
..................................................
Found 0 files with 0 issue(s).
Processing results...
RuboCop Gradual is complete!

When I run the same check command locally I have the same problem.

bundle exec rake rubocop_gradual:check
Running RuboCop Gradual...
...............................................
Found 0 files with 0 issue(s).
Processing results...
RuboCop Gradual is complete!

Unexpected Changes!

RuboCop Gradual lock file is outdated, to fix this message:
- Run `rubocop-gradual` locally and commit the results

`.rubocop_gradual.lock` diff:

-{
-
-}

This used to work, so it must be due to a recent change somewhere.

[pboling]

@skryukov any ideas?💡

[skryukov]

Hey, @pboling, thanks for the report! 🙏 I just released v0.3.6, it includes the fix.