```
May 05 19:20:29 lilith sudo[6776]: pam_unix(sudo:session): session opened for user postgres by (uid=0)
May 05 19:20:29 lilith hydra-init-pre-start[6778]: NOTICE:  extension "pg_trgm" already exists, skippingMay 05 19:20:29 lilith hydra-init-pre-start[6778]: CREATE EXTENSIONMay 05 19:20:29 lilith sudo[6776]: pam_unix(sudo:session): session closed for user postgresMay 05 19:20:29 lilith hydra-init[6783]: upgrading Hydra schema from version 66 to 67May 05 19:20:29 lilith hydra-init[6783]: executing SQL statement: alter table Builds drop constraint builds_project_fkey2May 05 19:20:29 lilith hydra-init[6783]: schema upgrade failed: main::run_(): DBI Exception: DBD::Pg::db do failed: ERROR:  constraint "builds_project_fkey2" of relation "builds" does not exist at /nix/store/n0b1q6xgavw9rgv49qpa33l8nnlkwa6m-hydra-2021-03-10/bin/.hydra-init-wrapped line 69May 05 19:20:29 lilith systemd[1]: hydra-init.service: Main process exited, code=exited, status=255/EXCEPTIONMay 05 19:20:29 lilith systemd[1]: hydra-init.service: Failed with result 'exit-code'.May 05 19:20:29 lilith systemd[1]: Failed to start hydra-init.service.
```