these 2 derivations will be built:
  /nix/store/y7bhl2acz15nicxbg6ddcrp43igdyqq7-omp-18.11.1.drv
  /nix/store/cd4sd4nsp7nxm1xdlgkvsj8s721xh5pj-check-omp.drv
error: timed out after 1200 seconds
error: Cannot build '/nix/store/cd4sd4nsp7nxm1xdlgkvsj8s721xh5pj-check-omp.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/8c4rqxfgnl8qprnxyj8v020dqqkighsk-check-omp