this derivation will be built:
  /nix/store/0mng6sfnxfssr3isbsan68j3ny5ijxhw-pg-upgrade-start-guard-test.drv
error: build of '/nix/store/0mng6sfnxfssr3isbsan68j3ny5ijxhw-pg-upgrade-start-guard-test.drv' on 'ssh-ng://nixbot-remote-build@78.232.36.247' failed: Cannot build '/nix/store/0mng6sfnxfssr3isbsan68j3ny5ijxhw-pg-upgrade-start-guard-test.drv'.
       Reason: builder failed with exit code 126.
       Output paths:
         /nix/store/ml53xi24zwa9r9lb47k1gx95k1zsv5cm-pg-upgrade-start-guard-test
       Last 2 log lines:
       > /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.NBz0Kkuv6o/bin/systemctl: /usr/bin/env: bad interpreter: No such file or directory
       > /nix/store/3f1mi9m3za264bfps7lhar1qf25vbp4p-source/tests/pg_upgrade/test-start-guard.sh: /build/tmp.NBz0Kkuv6o/bin/rm: /usr/bin/env: bad interpreter: No such file or directory
       For full logs, run:
         nix log /nix/store/0mng6sfnxfssr3isbsan68j3ny5ijxhw-pg-upgrade-start-guard-test.drv
error: Cannot build '/nix/store/0mng6sfnxfssr3isbsan68j3ny5ijxhw-pg-upgrade-start-guard-test.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/ml53xi24zwa9r9lb47k1gx95k1zsv5cm-pg-upgrade-start-guard-test