Calcite master branch has failed unit test?

[Jinfeng Ni]

On commit:

git log
commit 9f6f23de06791a3d2de1672b55bfdf7d6396bc78

Failed tests:
  SqlToRelConverterTest.testCorrelationNotExistsAndFilter:1692 plan
expected:<...alFilter(condition=[[NOT(IS NOT NULL($12)])])
      LogicalJoi...> but was:<...alFilter(condition=[[IS NULL($12])])
      LogicalJoi...>

Tests run: 2687, Failures: 1, Errors: 0, Skipped: 87

Anyone saw the same failure?

Regards,

Jinfeng