Traceback (most recent call last):
  File "/disk2/worker/repository/td/LatticeConstantHexagonalEnergy__TD_942334626465_005/runner", line 458, in <module>
    a, c, cohesive_energy = get_lattice_constant(symbol, model, maxiter=500)
  File "/disk2/worker/repository/td/LatticeConstantHexagonalEnergy__TD_942334626465_005/runner", line 390, in get_lattice_constant
    "unstable.".format(final_a, final_c, float(final_c / final_a), model_cutoff)
RuntimeError: Lattice converged to a = 2.4689860379914776 Angstroms and c = 1.9986932638096033 Angstroms (c/a = 0.809520). The model cutoff computed was 1.9999999941513362 Angstroms.  Since a > model_cutoff, the minimization has converged to a state where there are no longer intralayer forces, indicating the lattice is unstable.
Command exited with non-zero status 1

{"usertime":7.23,"memmax":53292,"memavg":0}