this derivation will be built:
  /nix/store/ixmpylcx9g2kp79arljv4bxw8gg7mz5i-iets-doctest-0.2.0.drv
ixmpylcx9g2kp79arljv4bxw8gg7mz5i-iets-doctest-0.2.0.drv: elastic-arm-5fdbc669: not scheduled here: ixmpylcx9g2kp79arljv4bxw8gg7mz5i-iets-doctest-0.2.0.drv, asking the scheduler again