signal non-convergence if theta_vcov is not positive definite #2031

All 474 tests pass, 40 skipped in 27s

1 files ±0 46 suites ±0 27s ⏱️ ±0s
514 tests ±0 474 ✅ +1 40 💤 ±0 0 ❌ ±0
1 974 runs ±0 1 925 ✅ +1 49 💤 ±0 0 ❌ ±0

Results for commit fa39600. ± Comparison against earlier commit e04cc39.