the corresponding features - GenericInlineClassParameter && DataObjects
- were turned on in 1.8 right after the last check build, therefore the
discrepancy went unnoticed
There was a refactoring of AbstractDiagnosticsTest in 9052ef06 which
contains bug that `setupEnvironment` for AbstractDiagnosticsTestUsingJavac
was not called, so for last year tests `UsingJavac` had no difference
with usual diagnostics tests which causes some contradictions in test data